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A high-sensitivity optical receiver has been designed using an InGaAs avalanche photodetector and a low capacitance (0.63 pF) hybrid GaAs FET preamplifier. Measured receiver sensitivities at 1.51 μm wavelength of −36.6 dBm at 2 Gbit/s and −31.2 dBm at 4 Gbit/s are the best obtained to date at these bit rates.
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Kasper et al. (1985) studied this question.
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