新颖的掺铒光纤放大器无源复合组件的研究

报道了一种将光波分复用器与光隔离器集于一体的适用于掺铒光纤放大器的新颖复合组件。根据复合组件的性能指标对组件的结构参数进行了优化设计。实际制作的复合组件，得到泵浦光插入损耗＜０．６ｄＢ，信号光的插入损耗＜１．５ｄＢ，反向隔离度＞４２ｄＢ，体积为９×４５ｍｍ３。将复合组件用于掺铒光纤放大器中（前向泵浦方式）得到约３０ｄＢ的小信号增益，１０ｄＢｍ的饱和输出功率。

Studies on a Novel Hybrid Passive Component for EDFA

In this paper, a novel hybrid passive component with a wavelength division multiplexer and a polarization insensitive optical isolator for an erbium doped amplifier is reported. The optimum design for hybrid component parameters by considering the characters of the hybrid component is presented. The hybrid component has the following features: insertion loss of signal light is less than 1.5 dB, the isolation of signal light is more than 42 dB, the insertion loss of pump light is less than 0.6 dB, and the 9 mm diameter component is 45 mm long. We apply this hybrid component to an practical EDFA using the single forward pumping structure and achieve the small signal gain of about 30 dB, the noise figure less than 5 dB, and the saturated output power more than 10 dBm.