Introduction to optical communication
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The document provides an overview of optical fiber communication, detailing its principles, types, and various components including the transmitter and receiver sections. It discusses the frequency bands used, types of connections such as splicing, and the roles of light sources and photo detectors in the system. Overall, it serves as an introduction to the fundamental concepts and components involved in optical fiber communication technology.
Introduction to optical communication
- 1. Introduction to Optical Fiber Communication Lokendra Pankaj Assistant Professor Dept. of Electronics & Comm. Engg.
- 2. Content • Frequency band and wavelength for OFC • Principal of optical fiber communication • Communication types • General communication system • Optical fiber communication system • Transmitter section • Splices and coupler • Receiver section
- 3. Frequency Band and Wavelength For Optical Fiber communication Optical fiber comm.
- 4. Principle of Optical Fiber Communication System n2 n1 n2 n1
- 5. Communication System Wireless Wired (Free Space) 1. Copper Cable (KHz) (KHz, MHz GHz) 2. Wave Guide (GHz) 3. Optical Fiber Comm. ( THz)
- 7. Optical Communication systems Amplifier Splice Coupler Photo detector Light Source Drive Circuit (V-I convertor) Optical RxOptical Rx Eletrical Signal Transmitter Section To other circuit Optical s/g Optical s/g Optical s/g Optical TxOptical Tx Electronic CircuitElectronic Circuit Electrical s/g Optical s/g To the destination Repeater Connector Electrical s/g Receiver section Optical Fiber Cable
- 8. Transmitter Section 1. Drive Circuit (V-I convertor) :- it provide the electrical interface b/w input circuitry and light source. 2. Light source :- It convert the electrical input current into the optical signal. we can use LED and laser. 3. Connector :- It is a temporary connection b/w light source and ofc cable.
- 9. Splices • Splices:- – A permanent connection b/w fiber to fiber is called splice. – It is also two type 1.Fusion 2. Mechanical • Glass electrode before installation • Optical mechanical gel after installation • Ferrule • V-Grove • 3 Tube
- 10. Photo Detector :- •We can use PIN diode or Avalanche photo diode as a photo detector. •Photo detector convert the optical signal into the electrical output. Receiver Section