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在国内首次研制了使用１个光纤放大器的１０频道１０２ｋｍ无再生中继“ＷＤＭ＋ＥＤＦＡ”全光光纤传输实验系统。每频道传输码率为１４０Ｍｂ／ｓ或２８０Ｍｂ／ｓＮＲＺ。所用光纤放大器为增益平坦型，小信号增益为３５ｄＢ。系统全部采用国产ＤＦＢ激光器，各频道波长分别为１５３１、１５３５、１５３７、１５４５、１５４７、１５４９、１５５１、１５５９、１５６１ｎｍ，在波长为１５５１ｎｍ的频道内布置了２路频分复用（ＦＤＭ）系统。波长分布遍及整个光纤放大器的通带。经无再生中继传输１０２ｋｍ后，在误码率为１×１０￣（－９）条件下，实测了尚有数ｄＢ以上（最大为１２ｄ８）的功率裕量。系统使用光栅合、分波器作为波分复用和解复用器，频道间隔为２ｎｍ及其整数倍，系统具有１８个频道的能力。
For the first time in China, a 10-channel 102-km regenerative repeater “WDM + EDFA” 10-channel all-optical fiber transmission experiment system using one optical fiber amplifier was developed. Each channel transmission rate is 140Mb / s or 280Mb / sNRZ. The fiber amplifier used for gain flat type, small signal gain of 35dB. All DFB lasers are used in the system. The wavelength of each channel is 1531, 1535, 1537, 1545, 1547, 1549, 1551, 1559 and 1561 nm respectively. Two frequency division multiplexing (FDM) systems are arranged in the channel with the wavelength of 1551 nm. Wavelength distribution throughout the fiber amplifier passband. After transmitting 102km without regenerative relay, the power margin of more than dB (up to 12d8) was measured under the bit error rate of 1 × 10 ~ (-9). The system uses grating together, splitter as wavelength division multiplexing and demultiplexer, the channel spacing of 2nm and its integral multiple, the system has the capacity of 18 channels.