Wavelength Coded Optical Time-Domain Reflectometry

被引：4

作者：

Zhu, Ning Hua ^{[1
]}

Ke, Jian Hong ^{[1
]}

Zhang, Hong Guang ^{[1
]}

Chen, Wei ^{[1
]}

Liu, Jian Guo ^{[1
]}

Zhao, Ling Juan ^{[1
]}

Wang, Wei ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Semicond, State Key Lab Integrated Optoelect, Beijing 100083, Peoples R China

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 2010年 / 28卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Brillouin scattering; optical heterodyne technique; optical time-domain reflectometry; tunable laser; DISTRIBUTED STRAIN; OTDR; BRILLOUIN; REDUCTION;

D O I：

10.1109/JLT.2009.2039853

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper presents a wavelength coded optical timedomain reflectometry based on optical heterodyne technique. In this scheme, the probe and reference optical pulses have different wavelengths. This enables optical heterodyne detection to be used to improve the system performances significantly. We demonstrate a spatial resolution of 2.5 m within a range of 60 km in weak-reflection signal detection and direct observation of Brillouin scattering over a long optical fiber, suggesting online fiber sensing possible. The principle of wavelength coding is applicable to other systems like lidar and radar to increase receiver sensitivity and simplify system structure.

引用

页码：972 / 977

页数：6

共 25 条

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