全光纤热光型可变光衰减器的闭环控制  

Closed-loop control of all-fiber thermooptical variable optical attenuator

作　　者：潘昊[1] 陈哲[1] 张云聪[1] 张凌童[1] 

机构地区：[1]暨南大学光电工程系,广州510632

出　　处：《光通信技术》2008年第3期36-39,共4页Optical Communication Technology

基　　金：国家自然科学基金委员会-中国工程物理研究院联合基金(10776009)资助;广东省科技攻关重大专项(项目编号2004A10602001)资助;广州市科技计划项目(编号2007Z2-D0091)资助

摘　　要：根据全光纤热光型变光衰减器(FTOVOA)的光电特性提出了针对该型FTOVOA的闭环控制的设计,并研制了该型FTOVOA的闭环控制系统。实验结果表明,当FTOVOA衰减量小于35dB时,闭环控制系统使光衰减量漂移小于±0.23dB。通过引入闭环控制不仅改善了全光纤热光型可变光衰减器的稳定性,而且使这种电流控制型的可变光衰减器变为一种电压控制型器件。Design of closed-loop control system of the all-fiber thermooptical variable optical attenuator （FTOVOA） was presented based on its photoelectric characteristics. A closed-loop control system for FTOVOA was constructed and demonstrated experimentally. Experimental results showed that when attenuation of FTOVOA is less than 35dB, the attenuation variation is less than . The closed-loop control system remarkably improved the output stability of the FTOVOA and converted the FTOVOA from a current-controlled device into a voltage-controlled device. Experiments showed that FTOVOA could be used to construct closed-loop control system with other all-fiber tap devices to monitor and control optical power in the optical path.

关 键 词：可变光衰减器 侧边抛磨光纤 全光纤器件 闭环控制 光功率监控 

分 类 号：TN253[电子电信—物理电子学]