Restorability of Rayleigh backscatter traces measured by coherent OTDR with precisely frequency-controlled light source

被引：26

作者：

Imahama, Mutsumi ^{[1
]}

Koyamada, Yahei ^{[1
]}

Hogari, Kazuo ^{[2
]}

机构：

[1] Ibaraki Univ, Dept Media & Telecommun Engn, Hitachi, Ibaraki 3168511, Japan

[2] NTT Corp, NTT Access Network Serb Syst Labs, Tsukuba, Ibaraki 3050805, Japan

来源：

IEICE TRANSACTIONS ON COMMUNICATIONS | 2008年 / E91B卷 / 04期

关键词：

Rayleigh scattering; coherent OTDR; fiber sensor; strain measurement; temperature measurement;

D O I：

10.1093/ietcom/e91-b.4.1243

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 letter presents the first experimental results that confirm the restorability of Rayleigh backscatter traces from a single-mode fiber measured by using a coherent optical time domain reflectometer (OTDR) with a precisely frequency-controlled light source. Based on this restorability, we can measure the distributed strain and temperature along the fiber with a very high measurand resolution that is one to two orders of magnitude better than that provided by Brillouin-based techniques for a long length of fiber.

引用

页码：1243 / 1246

页数：4

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