SECTION 5: OPTICAL AMPLIFIERS
fiber amplifiers (EDFAs) due to their ability to amplify signals at the low loss 1.55 m wavelength range. Characteristics of EDFAs (advantages): High power transfer efficiency from pump to signal power (> 50%). Wide spectral band amplification with relative flat gain (>20 dB) – useful for WDM applications. Saturation output > 1 mW (10 to 25 dBm).
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Spring 2018 - University of Arizona
uweb.engr.arizona.eduProblem 2.42 A generator with Veg =300 V and Zg =50 Ωis connected to a load ZL =75 Ωthrough a 50-Ωlossless line of length l =0.15λ. (a) Compute Zin, the input impedance of the line at the generator end. (b) Compute eIi and Vei. (c) Compute the time-average power delivered to the line,Pin = 1 2 Re[VeieI∗ i]. (d) Compute VeL, eIL, and the time-average power delivered to the …
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