期刊
IEEE PHOTONICS TECHNOLOGY LETTERS
卷 12, 期 10, 页码 1337-1339出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/68.883822
关键词
avalanche photodiodes; optical communication; optical fiber amplifiers; optical receivers; photodetectors
We report an investigation of a multimode EDFA used as an optically preamplified receiver. A two-stage amplifier pumped at 982 nm shows gain of up to 40 dB at 1553 nm, We study the communications performance of the receiver at 10 Gb/s and compare it with theory. The measured sensitivity is 220 photons per bit at a bit error rate of 10(-9) and data rate of 10 Gb/s, This is 4.5 dB from the quantum limit of 78 photons per bit for a 56 mode amplifier.
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