|
8EC3-OPTICAL COMMUNICATION |
|
UNIT 1 : OPTICAL FIBERS |
|
- Basic optical laws and definitions, Principles of light propagation in fibers, |
|
Ray theory, Optical fiber modes and configurations, Step index and graded index fibers, Monomode and |
|
multimode fibers, Fiber materials, fiber fabrication, Fiber optic cables. Attenuation, signal distortion in |
|
optical fibers, Dispersion-intra modal & inter modal, Dispersion shifted and flattened fiber. |
|
UNIT 2 : OPTICAL SOURCES |
|
- LED’s- Structure, Materials, Characteristics, Modulation, Power & |
|
efficiency, Laser Diodes - Basic concept, Hetro Structure, properties and modulation. |
|
UNIT 3 : OPTICAL DETECTORS |
|
- PIN and Avalanche photo diodes, photo detector noise, detector |
|
response time, Avalanche multiplication noise. Photo diode materials. Fundamental of Optical Receiver |
|
Operation. |
|
UNIT 4 : OPTICAL FIBER COMMUNICATION SYSTEMS |
|
- Source to fiber coupling, fiber to fiber joints, |
|
fiber splicing, fiber connectors. Principal components. Link design calculation, Applications, Wavelength |
|
division multiplexing. |
|
UNIT 5 : OPTICAL FIBER MEASUREMENTS |
|
: Measurements of Fiber attenuation, Dispersion, refractive |
|
index profile, Numerical aperture & diameter. |