Optical Fiber CommunicationsThe third edition of this popular text and reference book presents the fundamental principles for understanding and applying optical fiber technology to sophisticated modern telecommunication systems.. Optical-fiber-based telecommunication networks have become a major information-transmission-system, with high capacity links encircling the globe in both terrestrial and undersea installations. Numerous passive and active optical devices within these links perform complex transmission and networking functions in the optical domain, such as signal amplification, restoration, routing, and switching. Along with the need to understand the functions of these devices comes the necessity to measure both component and network performance, and to model and stimulate the complex behavior of reliable high-capacity networks. |
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Page 98
... output power and diode drive current is presented in Fig . 4-13 . At low diode currents only spontaneous radiation is emitted . Both the spectral range and the lateral beam width of this emission are broad like that of an LED . A ...
... output power and diode drive current is presented in Fig . 4-13 . At low diode currents only spontaneous radiation is emitted . Both the spectral range and the lateral beam width of this emission are broad like that of an LED . A ...
Page 102
... output power level is to be maintained as the temperature of the laser changes or as the laser ages , it is ... power emitted from the rear facet of the laser or by tapping off and monitoring a small portion of the fiber - coupled power ...
... output power level is to be maintained as the temperature of the laser changes or as the laser ages , it is ... power emitted from the rear facet of the laser or by tapping off and monitoring a small portion of the fiber - coupled power ...
Page 109
... output power as a function of operating time for five ambient temperatures . Po is the initial optical output power . ( Reproduced with permission from Yamakoshi et al.53 ) it is advantageous to operate these devices at as low a current ...
... output power as a function of operating time for five ambient temperatures . Po is the initial optical output power . ( Reproduced with permission from Yamakoshi et al.53 ) it is advantageous to operate these devices at as low a current ...
Contents
Structures and Waveguiding | 12 |
Signal Degradation in Optical Fibers | 48 |
Optical Sources | 80 |
Copyright | |
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absorption amplifier angle attenuation avalanche photodiode band gap bandwidth Bell Sys bias cable carrier Chap cladding coefficient communication systems components connector coupler coupling coupling loss data rate dB/km decibels density detector device distortion electric electromagnetic emission emitting energy equation fiber core fiber end fiber optic Figure frequency function given by Eq glass fibers graded-index fiber IEEE Trans input laser diodes layer Lett lifetime light source loss material dispersion measured method modal modulation multimode fibers n₁ n₂ numerical aperture operating optical output optical power optical signal optical source optical waveguide output power parameter percent photodetector photon pin photodiode preform propagation quantum efficiency radiation radius ratio receiver recombination refractive index refractive-index refractive-index profile semiconductor shown in Fig silica silicon single-mode spectral width splice star coupler step-index fiber surface T-coupler technique temperature thermal noise transmitter values voltage wave wavelength