OFC Communication - Pocket Note
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Fiber optic communication transmits information using pulses of light through optical fibers. It uses optical transmitters to convert electrical signals to optical signals that are sent through the fiber, and optical receivers that convert the returning optical signals back to electrical signals. Modern systems use technologies like dense wavelength division multiplexing to maximize the bandwidth capacity of each fiber by transmitting multiple parallel channels of data on different wavelengths of light. Fiber attenuation necessitates the use of in-line amplifiers to boost signal strength over long distances.
OFC Communication - Pocket Note
- 2. FIBER OPTIC COMMUNICATIONS Fiber Optic Communication is a method for transmitting information or data by sending pulse of lights from one place to another place through Optical fiber. [email protected]
- 3. FIBER OPTIC COMMUNICATIONS Uses of Optical Fiber – Optical fiber is used by many telecommunication companies to transmit the telephone signals, data, voice, Internet & TV cable etc. Technology – Modern Optical Fiber Communication system is generally include an OPTICAL TRANSMITTER to convert Electrical signal to Optical Signal to send into Optical Fiber, and an OPTICAL RECEIVER to convert Optical signal into Electrical Signal. [email protected]
- 4. FIBER OPTIC COMMUNICATIONS Transmitter – The most commonly used Optical transmitters are semiconductor device such as LIGHT EMITTING DIODES (LED). Receiver – The main component of Optical Receiver is a PHOTODETECTOR which convert Light Signal into Electrical Signal using PHOTOELECTRIC EFFECT. [email protected]
- 5. FIBER OPTIC COMMUNICATIONS Diameter of OFC – Single Mode – >9 Micron to 125 Micron means (Core to cladding diameter ratio is 9 Microns to 125 Microns) Multimode – 50 microns to 125 microns & 62.5 microns to 125 microns. Diameter of Inner Sheath – 0.7 MM Nominal Cable Outer diameter – 15.5 MM to 19 MM Nominal Cable weight – 260 KG/KM [email protected]
- 6. FIBER OPTIC COMMUNICATIONS Difference between single mode fiber and multi- mode fiber – Single Mode cable is a single stand of glass fiber with a diameter of 8.3 to 10 microns that has one mode of transmission. Single-mode fiber gives you a higher transmission rate and up to 50 times more distance than multimode. Multimode cable is made of glass fibers, with common diameters in the 50-to-100 micron range for the light carry component (the most common size is 62.5 micron). Multimode fiber gives you high bandwidth at high speeds over medium distances. [email protected]
- 7. FIBER OPTIC COMMUNICATIONS Amplifier – The transmission distance of a fiber Optics Communication system has traditionally been limited by fiber attenuation and by fiber distortion. By using Amplifier these problem has been eliminated. These repeaters convert Optical signals to Electrical signals and then use Electrical Signals to Optical signals at again at a higher intensity. [email protected]
- 8. FIBER OPTIC COMMUNICATIONS DWDM (Dense Wavelength Division Multiplexing) – DWDM is the practice of multiplying of available capacity of a fiber through use of parallel channels, each channel on a dedicated wavelength of Light. Using DWDM technology now commercially available bandwidth of a fiber can be divided into as many as 160 channels to support a combined bit rate in the range of 1.6 Terabit. [email protected]
- 9. FIBER OPTIC COMMUNICATIONS Fiber Optic Network Optical Wavelength Transmission Bands - As fiber optic networks have developed for longer distances, higher speeds and wavelength-division multiplexing (WDM), fibers have been used in new wavelength ranges, now called "bands," where fiber and transmission equipment can operate more efficiently. [email protected]
- 10. FIBER OPTIC COMMUNICATIONS Band Description Wavelength Range O band Original 1260 to 1360 nm E band Extended 1360 to 1460 nm S band short wavelengths 1460 to 1530 nm C band conventional ("erbium window") 1530 to 1565 nm L band long wavelengths 1565 to 1625 nm U band ultra-long wavelengths 1625 to 1675 nm [email protected]
- 11. FIBER OPTIC COMMUNICATIONS Fiber Optic Color Code – [email protected]
- 12. FIBER OPTIC COMMUNICATIONS Attenuation – Fiber attenuation, which necessitates the use of amplification systems, is caused by a combination of material absorption, Rayleigh scattering, Mie scattering, and connection losses. Other forms of attenuation are caused by physical stresses to the fiber, microscopic fluctuations in density, and imperfect splicing techniques. Modern fiber has attenuation around 0.3 dB/km. [email protected]
- 13. FIBER OPTIC COMMUNICATIONS Thanks for your attention Write me on [email protected] [email protected]