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 94
... photon of energy hv12 = E2 E. Normally the system is in the ground state . When a photon of energy hv12 impinges on the system , an electron in state E , can absorb the photon energy and be excited to state E2 , as shown in Fig . 4-10a ...
... photon of energy hv12 = E2 E. Normally the system is in the ground state . When a photon of energy hv12 impinges on the system , an electron in state E , can absorb the photon energy and be excited to state E2 , as shown in Fig . 4-10a ...
Page 100
... photon lifetime Tph is the average time that the photon resides in the lasing cavity before being lost either by absorption or by emission through the facets . In a Fabry - Perot cavity the photon lifetime is1 1 Tph = α + n In 2L R1R2 ...
... photon lifetime Tph is the average time that the photon resides in the lasing cavity before being lost either by absorption or by emission through the facets . In a Fabry - Perot cavity the photon lifetime is1 1 Tph = α + n In 2L R1R2 ...
Page 306
... Photon energy Photon energy hv = Eind + Eph hv = Eind - Eph Indirect band gap energy Eind Momentum k ( b ) Valence band Figure E - 5 ( a ) Electron recombination and the associated photon emission for a direct - band - gap material ...
... Photon energy Photon energy hv = Eind + Eph hv = Eind - Eph Indirect band gap energy Eind Momentum k ( b ) Valence band Figure E - 5 ( a ) Electron recombination and the associated photon emission for a direct - band - gap material ...
Contents
Structures and Waveguiding | 12 |
Signal Degradation in Optical Fibers | 48 |
Optical Sources | 80 |
Copyright | |
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absorption amplifier angle Appl 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 single-mode spectral width splice star coupler step-index fiber surface T-coupler technique temperature thermal noise transmitter values voltage wave wavelength