RESOLUTION CONTROL OF LOW-COHERENCE OPTICAL TIME-DOMAIN REFLECTOMETER BETWEEN 14 AND 290-MU-M

被引：9

作者：

TAKADA, K

HIMENO, A

YUKIMATSU, K

机构：

[1] NTT Communications Switching Laboratories, Nippon Telegraph and Telephone Corporation, Tokyo

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 1991年 / 3卷 / 07期

关键词：

D O I：

10.1109/68.87951

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：

A low-coherence OTDR that can control spatial resolution is demonstrated through the use of a new light source consisting of an SLD, an AR-coated LD booster amplifier, and two identical optical bandpass filters: one is for truncating the SLD output, and the other for reducing amplified spontaneous emission. The resolution is changed from 14 to 290-mu-m for single mode fibers by using filters with different bandwidths. Backscattering measurements are demonstrated for a fiber at three resolutions: 14, 44, and 290-mu-m. The best dynamic range at 10 Hz detection bandwidth is 18 dB at 290-mu-m resolution.

引用

页码：676 / 678

页数：3

共 9 条

[1] GUIDED-WAVE REFLECTOMETRY WITH MICROMETER RESOLUTION [J].