具有电色散补偿的10 Gb/s脉冲转换器的研制

设计并研制了带电色散补偿功能的10 Gb/s脉冲转换器。电色散补偿通过时域均衡的方法,消除光纤色散带来的码间串扰;将电色散补偿芯片纳入脉冲转换器设计中,从而提高了其传输距离。所研制的样品光发射部分采用分布反馈激光器加电吸收调制器集成光源,接收部分采用带互阻放大器的雪崩光电二极管光电探测器模块,电色散补偿芯片对光电探测器输出的码流执行色散补偿算法。对样品进行的测试结果表明该脉冲转换器背对背接收灵敏度为-24.6 dBm,经过100 km G.652光纤传输后接收灵敏度为-20.8 dBm。未加电色散补偿功能时,采用相同的光源传输距离仅为50 km。

Design and Fabrication of 10 Gb/s Transponder with Electronic Dispersion Compensation

10 Gb/s transponder with electronic dispersion compensation(EDC is designed and fabricated.Inter-symbol-interference brought about by chromatic dispersion and polarization mode dispersion is minimized by electronic dispersion compensation.So the transmission distance is greatly enhanced.Apart from electronic dispersion compensation,the transponder fabricated features DFB EA integrated light source and avalanche photodiode(APD module carrying transimpedance amplifier.Experiments and tests show that the sensitivity of back-to-back transmission is-24.6 dBm,and the transmission distance of the module is more than 100 km,the sensitivity is-20.8 dBm after transmission of 100 km G.652 fiber.Compared with transponder without electronic dispersion compensation,which has a transmission distance of about 50 km,the transmission distance is doubled.Hence the requirement of dispersion management of the system is cut down greatly and cost reduced.