Analog Optical Links: Theory and Practice
Analog Optical Links presents the basis for the design of analog links. Following an introductory chapter, there is a chapter devoted to the development of the small signal models for common electro-optical components used in both direct and external modulation. However this is not a device book, so the theory of their operation is discussed only insofar as it is helpful in understanding the small signal models that result. These device models are then combined to form a complete link. With these analytical tools in place, a chapter is devoted to examining in detail each of the four primary link parameters; gain, bandwidth, noise figure and dynamic range. Of particular interest is the inter-relation between device and link parameters. A final chapter explores some of the trade offs among the primary link parameters.
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amplifiers analog average optical power bandwidth bias current bias point calculate carrier density cavity Chapter components conjugate match Consequently decreases dependence diode laser direct modulation directional coupler discussed electrical electrodes expression external modulation link Fabry–Perot frequency response fundamental harmonic IEEE Photon IM-free DR impedance matching increases incremental modulation efficiency input intermodulation distortion intrinsic gain intrinsic link Lett linear link design link gain link noise figure lithium niobate load lossless low frequency Mach–Zehnder modulator magnitude match matching circuit maximum mode modulation device modulation source noise figure noise sources non-linear optical fiber optical link optical power output parameters passive match photodetection devices photodetector photodiode photon density pre-amplifier pre-distortion rate equations resistor Section semiconductor shot noise shown in Fig signal slope efficiency small-signal stimulated emission Technol thermal noise third-order distortion threshold tradeoff transfer function transformer match typically voltage waveguide wavelength zero