科研之友
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摘要
An efficient gain-flattened L-band optical amplifier is demonstrated using a hybrid configuration with a distributed Raman amplifier (DRA) and an erbium-doped fiber amplifier (EDFA) for 160 x 10-Gb/s dense wavelength division multiplexed system at 25-GHz interval. With an input signal power of 3 mW, a flat gain of >10 dB is obtained across the frequency range from 187 to 190.975 THz with a gain variation of <4.5 dB without using any gain-flattening technique. The output power obtained at 3-mW optimum input power is also the highest value (>8.9 dBm) ever reported for a DRA-EDFA hybrid optical amplifier at reduced channel spacing.
- 出版日期2013-2-1
