光纤直接耦合微加工型可调光衰减器  

Micromachining Based Direct-Coupled Variable Optical Attenuator

作　　者：晏辉鸣[1] 曹钟慧[1] 吴兴坤[1] 

机构地区：[1]浙江大学现代光学仪器国家重点实验室,浙江大学光及电磁波研究中心,杭州310027

出　　处：《光子学报》2005年第5期718-721,共4页Acta Photonica Sinica

摘　　要：设计研制了一种新型小体积,低成本的光纤直接耦合微加工型可调光衰减器.该器件采用电磁微线圈驱动柔性框架上的活动光纤微位移实现信号功率衰减变化,驱动电压为0～8 V,工作范围0～65 dB,动态时间响应小于2.3 ms.器件构造工艺主要使用了CNC高精度雕刻和激光点焊封装技术.利用有限元单元法进行器件理论分析,并报告了其测试性能.A design of micromachining based direct-coupled variable optical attenuator (VOA) is presented. The device operates by misaligning a fiber-to-fiber coupling through a lateral displacement of one of the fibers mounted on a micro-machined flexure driven electromagnetically. The VOA was fabricated using CNC engraving and laser spot welding technologies and features a fast dynamic response ( less than or equal 2.3 ms), great dynamic range (0~65 dB) and wide bandwidth. In order to optimize micro-mechanical structure an FET software package ANSYS was employed and simulation of the device operation is reported in details.

关 键 词：光衰减器 光纤直接耦合 光纤通信 

分 类 号：TN253[电子电信—物理电子学]