FIBEROPTIC SENSOR USING AN INJECTION-LOCKED LOCAL LASER

被引：2

作者：

OKAMURA, H

IWATSUKI, K

机构：

[1] NTT Transmission Systems Laboratories, Kanagawa, 238-03, 1-2356, Take, Yokosuka-shi

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 1991年 / 9卷 / 04期

关键词：

D O I：

10.1109/50.76671

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：

An interferometric fiber-optic sensor using a local laser is proposed. An Er-doped-fiber ring-laser is injection locked to a signal carrier using a fiber coupler and the extracted carrier is directly homodyned with the signal light at the output of the coupler. With a feedback loop suppressing the local laser instability, demodulation linearity over 2 decades and minimum detection in the 10(-3) rad range are attained. The Er-doped fiber ring laser constructed for this work has a linewidth of less than 1.4 kHz.

引用

页码：552 / 557

页数：6