掺饵光纤放大器测试系统研制

A Development of Test System for Erbium Doped fiber Amplifier

报导了用积木式设计方法、由下列几部分组成的一套以拟合技术为基础的掺饵光纤放大器( EDFA)测试系统 :1低边模抑制波长和功率可调光源 ;2测试控制单元 ;3单色光功率计 ;4控制与数据采集和处理微机系统 ;5专用机柜 ;6系统控制与测试数据采集和处理软件。该系统可以测量EDFA的增益 G、噪声指数 NF和光功率 P等参数及其与波长λ的关系。波长测量范围是 1530～1570 nm,精度为± 0 .1nm;G和 N F的测量不确定度分别为± 0 .5d B和± 0 .7d B;光功率的测量精度为± 0 .2 d B。在这套系统中用“单色光功率计”代替了价格昂贵的光谱分析仪 ,并开发有良好的测试与控制系统软件 ,使该系统成为一套适用性与经济性很好、操作使用灵活、简单快速的

It is reported in this paper that a test syste m for Erbium Doped Fiber Amplifier (EDFA) based on building blocks and fitting tec hnology will be composed of several parts as follows:(1) a tunable laser source w ith lower SSE; (2) a unit of testing and controlling; (3) a power meter for mono chromatic light; (4) a subset system for control and disposal of the data; (5) a cabnet for special purpose ; (6) a software of test system. The parameters, for example, Gain(G), Noise Figure (NF) and optical power (P) of output of EDFA an d also the wavelengh dependence of these parameters can be measured by this test system. The range and accuracy of wavelengh is, respectively ,1530 to 1570nm an d±0. 1 nm, The measured uncertainty of the system for Gain and Noise Figure is a c ontant ±0.5dB and ±0.7dB. The accuracy of optical power is about ±0.2dB. Fort unately, this is the first paper on the test system for EDFA in China which show better stability, cheapness and convenient operation because of excellent softw are and monochromatic power meter instead of the optical spectrum analyses.