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利用自行研制的模块化高稳定度光发射机、光接收机、掺饵光纤功率放大器和掺饵光纤前置放大器，实现了4×622Mb／s×200km、2．5Gb／s×200km和4．354Gb／s（1×2．488Gb／s＋3×622Mb／s）×160km的常规单模光纤无中继传输实验。带有掺饵光纤前置放大器的四路光接收机灵敏度达到－46．8dBm（622Mb／s，NRZ223－1 PRBS）和－39．5dBm（4×2．5Gb／s，NRZ27—1PRBS）。系统各信道误码率优于4×10－12～4×10－15。
The self-developed modular high-stability optical transmitter, optical receiver, erbium-doped fiber amplifier and bait fiber preamplifier are used to realize 4 × 622Mb / s × 200km, 2.5Gb / s × 200km and 4. A conventional single mode fiber with no transmission at 354Gb / s (1 × 2.488Gb / s + 3 × 622Mb / s) × 160km. Four-channel optical receivers with erbium-doped fiber preamplifiers achieve -46.8dBm (622Mb / s NRZ223-1 PRBS) and -39.5dBm (4x2.5Gb / s NRZ27-1PRBS) sensitivity. The system error rate of each channel is better than 4 × 10-12 ~ 4 × 10-15.