FDTD用户手册

FDTD软件英文使用说明 Initial Properties dialog box ................................................................................... 33 Mask Export............................................................................................................. 41 Profile Designer....................................................................................................... 42 Wafer Properties ..................................................................................................... 42 Profiles In Use ......................................................................................................... 44 Properties ................................................................................................................ 45 Toolbars ................................................................................................................... 45 Status bar................................................................................................................. 45 Color Spectrum ....................................................................................................... 46 Workbook Mode ...................................................................................................... 49 3D Graph Items........................................................................................................ 50 Show slice selector................................................................................................. 54 Refractive Index (X, Y, and Z directions) .............................................................. 54 Zoom tool................................................................................................................. 54 Edit Parameters....................................................................................................... 56 2D Simulation Parameters...................................................................................... 62 3D Simulation Parameters...................................................................................... 66 3D Simulation Parameters for 64-bit simulator .................................................... 68 2D Band Solver Parameters ................................................................................... 73 PWE Band Solver .................................................................................................... 78 Test Script................................................................................................................ 86 Run Script (2D or 3D).............................................................................................. 86 Generate Template Script....................................................................................... 86 Generate Layout Script........................................................................................... 86 Generate Scanning Script ...................................................................................... 86 Preferences menu ................................................................................................... 87 Edit Menu ................................................................................................................. 89 3D Objects ...................................................................................................... 93 Common elements of 3D object waveguides ....................................................... 94 Clipping Planes ..................................................................................................... 103 Profile Designer ........................................................................................... 107 Main parts of the GUI ............................................................................................ 108 Main menu bar....................................................................................................... 112 Toolbars ................................................................................................................. 112 Library Browser toolbar ....................................................................................... 113 Profile toolbar........................................................................................................ 114Table of Contents Installing OptiFDTD ......................................................................................... 1 Hardware and software requirements..................................................................... 1 Protection key ........................................................................................................... 2 Installation ................................................................................................................. 2 Technical support ..................................................................................................... 3 Overview........................................................................................................... 5 What is OptiFDTD? ................................................................................................... 5 OptiFDTD applications and how they relate to one another................................. 6 OptiFDTD_Designer .................................................................................................. 6 Main elements of a layout design............................................................................ 8 What’s new in OptiFDTD 8.0 ......................................................................... 11 64-bit 2D Simulator ................................................................................................. 11 Heating Absorption................................................................................................. 13 Total Field Scattering Field 2D simulations and analysis ................................... 13 OptiFDTD_Designer....................................................................................... 17 Main parts of the GUI .............................................................................................. 18 Main menu bar......................................................................................................... 22 Toolbars ................................................................................................................... 22 OptiFDTD_Designer menus and buttons..................................................... 23 File menu ................................................................................................................. 23 Edit menu................................................................................................................. 24 View menu ............................................................................................................... 25 Tools menu .............................................................................................................. 27 Draw menu............................................................................................................... 27 Simulation menu ..................................................................................................... 31 Preferences menu ................................................................................................... 31 Window menu.......................................................................................................... 32 Help menu................................................................................................................ 32 OptiFDTD_Designer functions...................................................................... 33OptiBPM Specific Materials ........................................................................ 169 Material Class ........................................................................................................ 169 Create and edit materials ..................................................................................... 169 Dielectric material (Ordinary)............................................................................... 170 Diffused material ................................................................................................... 173 OptiFDTD Specific Materials....................................................................... 177 Material Class ........................................................................................................ 177 Create and edit materials ..................................................................................... 177 Dielectric ................................................................................................................ 178 Dispersion.............................................................................................................. 183 Converting the ‘Sellmeier equation’ to ‘Lorentz Model’ .................................... 184 Nonlinear................................................................................................................ 192 Perfect Conductor................................................................................................. 196 2D Band Solver ............................................................................................ 199 2D Band Solver Parameters ................................................................................. 199 File menu ............................................................................................................... 201 Simulation menu ................................................................................................... 201 View menu ............................................................................................................. 201 Help menu.............................................................................................................. 202 Waveguides.................................................................................................. 205 Waveguide properties........................................................................................... 205 Waveguide profiles ............................................................................................... 205 Wafer ...................................................................................................................... 208 Waveguide vs. wafer............................................................................................. 209 Initial data .............................................................................................................. 211 Local Coordinate System ..................................................................................... 211 User Interface of a Parameterized position of a Layout Shape ........................ 212 Waveguides ........................................................................................................... 214 Linear ..................................................................................................................... 216 Arc .......................................................................................................................... 222 Elliptic .................................................................................................................... 228 Ring ........................................................................................................................ 233 S-Bend Sines ......................................................................................................... 239 S-Bend Arc............................................................................................................. 239 S-Bend Sine ........................................................................................................... 244S-Bend Cosine....................................................................................................... 250 Linear Taper........................................................................................................... 256 Parabolic Taper ..................................................................................................... 262 Exponential Taper ................................................................................................. 267 S-Bend Arc Taper.................................................................................................. 273 S-Bend Sine Taper ................................................................................................ 278 S-Bend Cosine Taper............................................................................................ 285 Circular Lens ......................................................................................................... 291 Elliptic Lens ........................................................................................................... 296 Parabolic Lens....................................................................................................... 303 Hyperbolic Lens .................................................................................................... 309 Polynomial ............................................................................................................. 315 Photonic Band Gap (PBG) Crystal Structure ..................................................... 321 Basic 3D Linear Tapering and Proportional Interpretation of Fiber Profile..... 330 Input Field..................................................................................................... 339 Input Field vs. Input Plane.................................................................................... 339 Insert an input plane ............................................................................................. 340 Input Field dialog box ........................................................................................... 343 Mode—Global Data: ADI Method ......................................................................... 359 Mode Solver 2D ..................................................................................................... 379 Mode Solver 2D—menus ...................................................................................... 380 Mode Solver 2D—tabs .......................................................................................... 396 TFSF Region Properties ....................................................................................... 401 3D Mode Solver............................................................................................ 407 Main parts of the GUI ............................................................................................ 410 Main menu bar....................................................................................................... 414 Toolbars ................................................................................................................. 414 3D Mode Solver menus and buttons.......................................................... 417 File menu ............................................................................................................... 417 View menu ............................................................................................................. 417 Simulation menu ................................................................................................... 419 Data menu.............................................................................................................. 419 Preferences menu ................................................................................................. 420 Help menu.............................................................................................................. 420 3D Mode Solver functions........................................................................... 421Profile Designer menus............................................................................... 117 File menu ............................................................................................................... 117 View menu ............................................................................................................. 117 Tools menu ............................................................................................................ 117 Help menu.............................................................................................................. 117 Profile Designer context menu ............................................................................ 118 Profile Designer functions .......................................................................... 119 Library Browser..................................................................................................... 119 Compare Libraries ................................................................................................ 119 Edit Variables and Functions............................................................................... 122 Mode—Global Data: ADI Method ......................................................................... 123 Mode Settings........................................................................................................ 124 Options................................................................................................................... 125 Profiles.......................................................................................................... 127 Fiber ....................................................................................................................... 127 Channel .................................................................................................................. 131 OptiBPM Specific Diffused Materials ......................................................... 137 Custom Diffusion Processes and Arbitrary Index Profiles ............................... 137 Diffusion Process Library .................................................................................... 137 Ti:LiNb03 profile - Titanium diffusion in lithium niobate................................... 138 Ti:LiNbO 3 Pro toolbar ........................................................................................... 139 Mg:LiNb03 profile - Magnesium diffusion in lithium niobate............................ 143 Mg:LiNb0 3 Pro toolbar .......................................................................................... 144 Proton Exchange profile - H+:LiNb03.................................................................. 148 Proton Exchange toolbar ..................................................................................... 149 Annealing Process................................................................................................ 151 OptiBPM Specific User Function Profile.................................................... 153 OptiBPM Specific User DLL Profile............................................................ 159 Center point ........................................................................................................... 162 Materials ....................................................................................................... 167Mode Found........................................................................................................... 421 Status Bar .............................................................................................................. 422 3D Graph Items...................................................................................................... 422 Show slice selector............................................................................................... 426 Customize .............................................................................................................. 426 Data menu.............................................................................................................. 429 3D Graph Settings................................................................................................. 432 Layout Options...................................................................................................... 441 Observation Points, Areas, and Lines ....................................................... 445 Observation Point ................................................................................................. 445 Observation Area .................................................................................................. 445 Observation Line................................................................................................... 446 Simulation toolbar................................................................................................. 446 Observation Points...................................................................................... 447 Observation properties—Point dialog box ......................................................... 448 Observation Area......................................................................................... 451 Observation properties -- X-Z Area dialog box .................................................. 452 Observation properties -- Y-Z Area dialog box .................................................. 455 Observation properties -- X-Y Area dialog box .................................................. 457 Observation Area Analysis dialog box ............................................................... 459 Observation Line.......................................................................................... 474 Observation properties -- Vertical Line dialog box............................................ 475 OptiFDTD_Simulator (2D)............................................................................ 479 Main parts of the GUI ............................................................................................ 480 Main menu bar....................................................................................................... 483 Toolbars ................................................................................................................. 483 OptiFDTD_Simulator (2D) menus and buttons ......................................... 485 File menu ............................................................................................................... 485 View menu ............................................................................................................. 485 Simulation menu ................................................................................................... 487 Preferences menu ................................................................................................. 489Export..................................................................................................................... 597 3D Graph Items...................................................................................................... 598 Simulation menu ................................................................................................... 598 Components menu................................................................................................ 601 Preferences menu ................................................................................................. 601 OptiFDTD Tools............................................................................................ 605 Overlap Integral............................................................................................ 607 Gaussian Overlap Scanner ......................................................................... 615 Overlap Integral Scanner ............................................................................ 619 Multiple Fields .............................................................................................. 623 Notes ...................................................................................................................... 628 Multiple Gaussians ...................................................................................... 629 Notes ...................................................................................................................... 632 Confinement Factor ..................................................................................... 633 Notes ...................................................................................................................... 638 Far Field........................................................................................................ 639 Fraunhofer approximation ................................................................................... 639 Fresnel-Kirchhoff Diffraction Formula ................................................................ 640 2D Far Field............................................................................................................ 641 3D Far Field............................................................................................................ 643 References............................................................................................................. 645 Mode 2D........................................................................................................ 647 Modes of Planar Waveguides .............................................................................. 649 File menu ............................................................................................................... 650 Edit menu............................................................................................................... 650 View menu ............................................................................................................. 651 Simulation menu ................................................................................................... 651 Window menu........................................................................................................ 651Help menu.............................................................................................................. 489 Simulation Parameters ......................................................................................... 490 Boundary Conditions............................................................................................ 491 Observation Point ................................................................................................. 492 Finalization ............................................................................................................ 494 OptiFDTD_Simulator (2D) functions .......................................................... 495 View list.................................................................................................................. 495 Status bar............................................................................................................... 496 3D Graph settings ................................................................................................. 501 OptiFDTD_Simulator (3D)............................................................................ 513 Main parts of the GUI ............................................................................................ 514 Main menu bar....................................................................................................... 517 Toolbars ................................................................................................................. 517 OptiFDTD_Simulator (3D) menus and buttons ......................................... 519 File menu ............................................................................................................... 519 View menu ............................................................................................................. 519 Simulation menu ................................................................................................... 522 Preferences menu ................................................................................................. 523 Help menu.............................................................................................................. 523 Simulation Parameters ......................................................................................... 524 Boundary Conditions............................................................................................ 525 Finalization ............................................................................................................ 527 OptiFDTD_Simulator (3D) functions .......................................................... 529 View list.................................................................................................................. 529 Status bar............................................................................................................... 530 3D Graph settings ................................................................................................. 535 PWE Band Solver......................................................................................... 545 OptiFDTD_Analyzer (2D Simulations)........................................................ 553 Main parts of the GUI ............................................................................................ 554 Components .......................................................................................................... 556 Main menu bar....................................................................................................... 559Toolbars ................................................................................................................. 559 OptiFDTD_Analyzer menus and buttons (2D Simulations)...................... 561 File menu ............................................................................................................... 561 View menu ............................................................................................................. 562 Components menu................................................................................................ 563 Simulation menu ................................................................................................... 564 Preferences menu ................................................................................................. 564 Tools menu ............................................................................................................ 564 Window menu........................................................................................................ 565 Help menu.............................................................................................................. 565 OptiFDTD_Analyzer functions (2D Simulations)....................................... 567 Export..................................................................................................................... 567 3D Graph Items...................................................................................................... 568 Components menu................................................................................................ 568 Simulation menu ................................................................................................... 568 Preferences menu ................................................................................................. 571 Tools menu ............................................................................................................ 571 OptiFDTD_Analyzer (3D Simulations)........................................................ 575 Main parts of the GUI ............................................................................................ 576 Main menu bar....................................................................................................... 580 Toolbars ................................................................................................................. 580 OptiFDTD_Analyzer menus and buttons (3D simulations) ...................... 581 File menu ............................................................................................................... 581 View menu ............................................................................................................. 582 Components menu................................................................................................ 583 Simulation menu ................................................................................................... 584 Preferences menu ................................................................................................. 584 Tools menu ............................................................................................................ 584 Window menu........................................................................................................ 585 Help menu.............................................................................................................. 585 OptiFDTD_Analyzer functions (3D simulations) ....................................... 587 Analysis Tools....................................................................................................... 587Code V Converter......................................................................................... 727 Data format ............................................................................................................ 729 EXFO OWA Converter ................................................................................. 731 Zemax Converter.......................................................................................... 739 Conversion ............................................................................................................ 739 Notes on Conversion ............................................................................................ 740 Data formats .......................................................................................................... 741 ZEMAX Beam File (ZBF) binary format ............................................................... 741 Appendix A: Opti2D Graph Control............................................................ 743 User interface features ......................................................................................... 744 Graph Properties dialog ....................................................................................... 754 Appendix B: File formats ............................................................................ 763 Data file formats .................................................................................................... 763 Appendix C: Parser supported functions.................................................. 773 Supported functions ............................................................................................. 773 Function Limits and _FnRslt_.............................................................................. 778 Appendix D: Batch processing................................................................... 781 Automatic loading of VB Script from command line ......................................... 785Simulation functions............................................................................................. 652 Correlation Function Method (CFM).................................................................... 660 File menu ............................................................................................................... 661 Edit menu............................................................................................................... 661 View menu ............................................................................................................. 662 Simulation menu ................................................................................................... 662 Window menu........................................................................................................ 662 Simulation functions............................................................................................. 663 User Defined File................................................................................................... 672 File menu ............................................................................................................... 673 Edit menu............................................................................................................... 674 View menu ............................................................................................................. 674 Simulation menu ................................................................................................... 674 Window menu........................................................................................................ 674 Notes: ..................................................................................................................... 676 Mode 3D........................................................................................................ 677 File menu ............................................................................................................... 677 Edit menu............................................................................................................... 678 View menu ............................................................................................................. 678 Operations menu................................................................................................... 680 Simulation menu ................................................................................................... 680 Draw Tool menu .................................................................................................... 681 Preferences menu ................................................................................................. 681 Layout Designer Dialog boxes of Mode Solver 3D ............................................ 683 Layout Settings layout dialog box....................................................................... 702 Waveguide Colors layout dialog box .................................................................. 703 Notes: ..................................................................................................................... 704 User Guide of View 3D................................................................................. 705 Commands of View 3D ......................................................................................... 705 View menu ............................................................................................................. 707 Toolbars menu ...................................................................................................... 707 Status Bar menu.................................................................................................... 708 Settings menu ....................................................................................................... 711 Dialog boxes of View 3D....................................................................................... 713 Notes: ..................................................................................................................... 726 FDTD（有限差分时域法）是一种数值计算方法，主要用于解决时域和频域的偏微分方程。它广泛应用于光子学模拟软件中，用于模拟和分析光波在特定结构中传播的物理过程。OptiFDTD是一款利用FDTD算法进行光子器件模拟的软件，本文档是OptiFDTD软件的用户手册，旨在指导用户如何使用该软件进行光子器件的设计、模拟和分析。 手册中首先介绍了软件的安装过程，包括硬件和软件的要求、保护密钥的使用、安装步骤以及技术支持的联系方式。OptiFDTD支持Windows 2000/Vista/XP操作系统，并且有32位和64位的版本。用户需要按照手册中的指导完成软件的安装并获取保护密钥，这是为了防止软件被非法使用。 手册的概述部分介绍了OptiFDTD软件的基本概念，解释了它是什么以及它如何应用于光子学领域。OptiFDTD_Designer是OptiFDTD的主要设计工具，它提供了图形用户界面（GUI），允许用户创建和编辑光学器件的布局设计。该部分还介绍了OptiFDTD的新特性，如64位2D模拟器和加热吸收模拟等。 在用户手册的其它部分，详尽地介绍了软件界面的各个组成部分，如工具栏（Toolbars）、状态栏（Status bar）、色谱（Color Spectrum）、工作表模式（Workbook Mode）、3D图形项目（3D Graph Items）等。这些界面元素使得用户能够方便地进行仿真设置、参数编辑和结果展示。 手册还包括了仿真参数的设置，如何创建和编辑材料模型，例如各向同性介质（Ordinary Dielectric material）、扩散材料（Diffused material）和色散模型（Dispersion）。此外，还介绍了如何进行2D和3D仿真参数的设置，以及特定的仿真类型，比如带状求解器（Band Solver）和非线性仿真（Nonlinear）。 用户手册详细说明了用户界面的主菜单（Main menu bar）及其各个菜单项，如文件菜单（File menu）、编辑菜单（Edit menu）、视图菜单（View menu）、工具菜单（Tools menu）、模拟菜单（Simulation menu）、偏好设置菜单（Preferences menu）、窗口菜单（Window menu）和帮助菜单（Help menu）等。这些菜单为用户提供了执行各种操作的途径，包括打开、保存设计，设置仿真参数，运行模拟，以及获取帮助。 手册还讨论了OptiFDTD_Designer的具体功能，比如如何设计和分析各种光波导（Waveguides）和透镜（Lenses），包括线性波导（Linear）、环形波导（Ring）、S形波导（S-Bend）以及其他特殊形状的波导。手册也提供了关于波导特性和波导剖面的详细信息，以及如何通过坐标系统来参数化布局形状的设计方法。 对于光栅（Gratings）、光子晶体（Photonic Crystal Structures）、光纤（Fiber）和光纤剖面（Fiber profiles）的设计和分析，用户手册也提供了必要的指南。手册解释了如何创建和编辑特定的光栅、在二维和三维空间中模拟光栅特性的方法，以及如何分析基于光子晶体结构的光学特性。 在关于波导的章节中，手册还讨论了如何通过不同类型的光波导进行光传播，例如椭圆形波导（Elliptic）、抛物线波导（Parabolic）、椭圆透镜（Elliptic Lens）等。这为用户提供了在各种光学设计中选择和实现最合适的波导和透镜提供了参考。 此外，手册中还涵盖了关于观察点（Observation Points）、区域（Areas）和线条（Lines）的设置与分析。这些功能允许用户在仿真过程中监视波导内光场的特定位置，以及如何处理和评估这些观察点的数据。 用户手册还介绍了仿真工具（OptiFDTD Tools）和分析工具（Analysis Tools），例如重叠积分（Overlap Integral）、高斯重叠扫描器（Gaussian Overlap Scanner）和多重高斯（Multiple Gaussians）等。这些工具可以帮助用户评估不同光场之间的耦合效率和模式分析。 手册在最后提供了代码转换器（Code V Converter）、数据格式（Data format）以及批处理操作（Batch processing）的说明，以帮助用户将OptiFDTD的输出数据转换为其他软件格式，或批量执行仿真任务。 总体而言，FDTD用户手册是一个详尽的指南，旨在帮助用户高效使用OptiFDTD软件进行光子学模拟和设计。通过介绍软件的安装、界面布局、仿真设置和分析工具，用户可以掌握从基本的光学设计到高级的物理特性分析的整个过程。