激光与光电子学进展, 2017, 54 (2): 021201, 网络出版: 2017-02-10   

面向混沌光时域反射仪的混沌光源设计 下载: 543次

Design of Chaotic Light Source for Chaos Optical Time Domain Reflectometry
乔翊 1,2,*马珺 1,2张建国 1,2
作者单位
1 太原理工大学物理与光电工程学院, 山西 太原 030024
2 新型传感器与智能控制教育部重点实验室, 山西 太原 030024
摘要
为满足光纤故障高精度诊断需求, 研制了一种面向混沌光时域反射仪(COTDR)的混沌光源模块, 该模块由宽带混沌信号源与激光器调制电路构成。其中, 宽带混沌信号源可产生频谱平坦且10 dB带宽达500 MHz的混沌电信号, 该信号经调制电路放大后, 驱动分布反馈式(DFB)半导体激光器可输出大功率、宽频带的混沌激光信号。所研制的混沌光源模块应用于光纤故障诊断中, 不仅可实现光纤断点、不匹配连接点的检测, 而且在107 km测量范围内, 可实现与距离无关的0.35 m空间分辨率。此外, 设计的混沌光源模块还可便捷地应用于混沌雷达、混沌保密通信等领域。
Abstract
In order to satisfy the requirement of high precision optical fiber fault diagnosis, we have developed a chaotic light source module, which is composed of a bandwidth chaotic signal source and a laser modulation circuit. Among them, the bandwidth chaotic signal source produces a chaotic electrical signal with flat frequency spectrum and 10 dB bandwidth up to 500 MHz. When the signal is amplified by the modulation circuit, the driving distributed feedback (DFB) semiconductor laser can output high power and broadband chaotic laser signal. When the chaotic source module is applied in optical fiber fault diagnosis, it can not only realize the detection of fiber breakpoints and mismatch junctions, but also achieve a range-independent spatial resolution of 0.35 m in the detection range of approximately 107 km. In addition, the chaotic source module can be conveniently applied to such fields as chaotic radar and chaotic secure communications.
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乔翊, 马珺, 张建国. 面向混沌光时域反射仪的混沌光源设计[J]. 激光与光电子学进展, 2017, 54(2): 021201. Qiao Yi, Ma Jun, Zhang Jianguo. Design of Chaotic Light Source for Chaos Optical Time Domain Reflectometry[J]. Laser & Optoelectronics Progress, 2017, 54(2): 021201.

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