"Introduction". In: Fiber-Optic Communication Systems
122 CHAPTER 3. OPTICAL TRANSMITTERS Figure 3.27: Two kinds of external modulators: (a) LiNbO 3 modulator in the Mach–Zehnder con ...
3.6. TRANSMITTER DESIGN 123 grated on the same chip. Low-chirp transmission at a bit rate of 5 Gb/s was demon- strated as early ...
124 CHAPTER 3. OPTICAL TRANSMITTERS mitters can be improved considerably by using monolithic integration of the laser with the d ...
3.6. TRANSMITTER DESIGN 125 Figure 3.28: Change in current as a function of time for a 1.3-μm InGaAsP laser aged at 60◦C with 5 ...
126 CHAPTER 3. OPTICAL TRANSMITTERS is used to hold the laser and fiber in place. Coupling stability in this case depends on how ...
REFERENCES 127 photon lifetime. What is the threshold value of the electron population? Assume that the gain varies asG=GN(N−N 0 ...
128 CHAPTER 3. OPTICAL TRANSMITTERS [5] S. L. Chuang,Physics of Optoelectronic Devices, Wiley, New York, 1995. [6] L. A. Coldren ...
REFERENCES 129 [37] W. T. Tsang, inSemiconductors and Semimetals, Vol. 22B, W. T. Tsang, Ed., Academic Press, San Diego, CA, 198 ...
130 CHAPTER 3. OPTICAL TRANSMITTERS [66] M. Osinski and J. Buus,IEEE J. Quantum Electron. 23 , 9 (1987). [67] H. Ishikawa, H. So ...
REFERENCES 131 [100] K. Shiraishi, N. Oyama, K. Matsumura, I. Ohisi, and S. Suga,J. Lightwave Technol. 13 , 1736 (1995). [101] P ...
132 CHAPTER 3. OPTICAL TRANSMITTERS [128] H. Zhang, M. C. Oh, A. Szep, W. H. Steier, C. Zhang, L. R. Dalton, H. Erlig, Y. Chang, ...
Chapter 4 Optical Receivers The role of an optical receiver is to convert the optical signal back into electrical form and recov ...
134 CHAPTER 4. OPTICAL RECEIVERS Figure 4.1: A semiconductor slab used as a photodetector. the incident optical powerPin, i.e., ...
4.1. BASIC CONCEPTS 135 Figure 4.2: Wavelength dependence of the absorption coefficient for several semiconductor ma- terials. ( ...
136 CHAPTER 4. OPTICAL RECEIVERS the time taken by electrons and holes to travel to the electrical contacts. It also depends on ...
4.2. COMMON PHOTODETECTORS 137 Figure 4.3: (a) Ap–nphotodiode under reverse bias; (b) variation of optical power inside the phot ...
138 CHAPTER 4. OPTICAL RECEIVERS Figure 4.4: Response of ap–nphotodiode to a rectangular optical pulse when both drift and diffu ...
4.2. COMMON PHOTODETECTORS 139 Figure 4.5: (a) Ap–i–nphotodiode together with the electric-field distribution under reverse bias ...
140 CHAPTER 4. OPTICAL RECEIVERS Table 4.1 Characteristics of commonp–i–nphotodiodes Parameter Symbol Unit Si Ge InGaAs Waveleng ...
4.2. COMMON PHOTODETECTORS 141 Figure 4.6: (a) Schematic cross section of a mushroom-mesa waveguide photodiode and (b) its measu ...
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