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光开关选通的光纤激光水听器时分复用阵列

Time division multiplexing array of fiber laser hydrophone using optical switch

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摘要

为了降低传感器系统的成本及体积,利用光纤激光传感单元的特性,采用光开关选通的光纤激光水听器时分复用技术,构建了实用的基于光开关的4元光纤激光水听器时分阵列。进行了理论分析和实验验证,分析了使用光开关选通的光纤激光水听器时分复用阵列方案的选通脉宽和损耗,指出了各通道光脉冲对干涉信号的采样率的限制因素。结果表明,光开关选通的光纤激光水听器时分阵列可以很好地完成复用信号的采集和复用,实验中4元时分复用水听器相邻通道的串扰为-17dB。

Abstract

In order to reduce the cost and the size of a sensing system, a 4-element fiber laser hydrophone time division multiplexing array was established by using high-speed optical switches based on the characteristics of fiber laser sensing elements. The selective pulse width and the loss of the time division multiplexing array were analyzed after theoretical analysis and experimental verification. Because of time delay of the interferometer and switch speed of the optical switches, sampling frequency was limited. The acoustic detecting experiments show that the multiplexing signal can be acquired and demutiplexed correctly. The crosstalk between adjacent channels of the 4-element fiber laser hydrophone array is -17dB.

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中图分类号:TP212.9;TN253

DOI:107510/jgjsissn1001-3806201604017

所属栏目:光通信与光信息技术

基金项目:***探索研究资助项目

收稿日期:2015-07-23

修改稿日期:2015-10-13

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作者单位    点击查看

顾宏灿:海军工程大学 兵器工程系, 武汉 430033
程 玲:中国船舶重工集团公司研究中心, 北京 100192
黄俊斌:海军工程大学 兵器工程系, 武汉 430033
唐 波:海军工程大学 兵器工程系, 武汉 430033
李日忠:海军工程大学 兵器工程系, 武汉 430033

联系人作者:顾宏灿(tanktomb@163.com)

备注:顾宏灿(1980-),男,讲师,现主要从事光纤传感技术的研究。

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引用该论文

GU Hongcan,CHENG Ling,HUANG Junbin,TANG Bo,LI Rizhong. Time division multiplexing array of fiber laser hydrophone using optical switch[J]. Laser Technology, 2016, 40(4): 536-540

顾宏灿,程 玲,黄俊斌,唐 波,李日忠. 光开关选通的光纤激光水听器时分复用阵列[J]. 激光技术, 2016, 40(4): 536-540

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