平面光波导自动耦合控制系统的实现及测试  

Realization and Testing of Auto-Coupling Control System for Planar Optical Waveguide

作　　者：王一可[1] 殷座山[1] 邱吉芳[1] 杜文涛[1] 周宇 伍剑[1] 林金桐[1] 

机构地区：[1]北京邮电大学信息光子学与光通信国家重点实验室,北京100876 [2]工业和信息化部电信研究院,北京100191

出　　处：《光电工程》2014年第10期68-74,共7页Opto-Electronic Engineering

基　　金：国家自然科学基金资助项目(61205031;61307055);国家863高技术发展项目(2013AA014202);国家973重点基础研究发展计划项目(2011CB301702)

摘　　要：开发了新的自动对接方法，设计了基于阈值的折返遍历搜索算法（RTS）与二分数据截断（BTDT）搜索算法，实现了六自由度耦合平台的四自由度的自动对接。折返遍历搜索算法精度高，可设定不同步长实现不同精度要求；二分数据截断算法搜索速度快，可快速接近最高点。实验结果表明，波导器件的纤到纤损耗可在8 min内调节至8~9 dB（包括波导传输损耗，人工对准需在半小时以上才可达到8~9 dB），耦合系统稳定性可保持15~20 min。与自动测试系统配合使用，在8 min内即可进行2200点的波长扫描与功率扫描，自动耦合系统具有实用性、稳定性和良好效果。A method based on MATLAB instrument control technology was proposed to realize an auto-coupling system, avoiding complicated and time-consuming manual alignment. A Binary-tree Data-truncation （BTDT） algorithm and Return-traversal Search （RTS） algorithm based on a threshold were designed for single axis searching. Return-traversal algorithm provides a higher accuracy which also achieves multiple kinds of accuracy and BTDT can search faster. Combined with a laser and a power meter, an auto testing system was developed with GPIB technology. The experiments show that insertion loss of tapered fiber can drop to 8~9 dB including the transmission loss of waveguide in 15 minutes while aligning manually usually takes more than 0.5 hour and system can be kept stable in 15~20 minutes. Besides, with auto testing system, scan of wavelength and power can be completed in 8 minutes for 2 200 points. Auto-coupling system has good effect, stability and practicability.

关 键 词：自动耦合 Matlab仪器控制 折返遍历搜索 二分数据截断搜索 自动测试 

分 类 号：TN252[电子电信—物理电子学]