EFFECT OF LASER PHASE NOISE IN SAGNAC INTERFEROMETERS

被引：9

作者：

KRAKENES, K ^{[1
]}

BLOTEKJAER, K ^{[1
]}

机构：

[1] NORWEGIAN INST TECHNOL,DEPT ELECT ENGN & COMP SCI,N-7034 TRONDHEIM,NORWAY

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 1993年 / 11卷 / 04期

关键词：

D O I：

10.1109/50.248130

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 theoretical analysis of the responsivity and the noise caused by backscattering in a Sagnac interferometer used as a sensor for reciprocal measurands, such as acoustic waves, is presented. Both Rayleigh backscattering and reflections from splices are taken into account. The noise power is found to increase proportional to the source coherence time, and a noise equivalent phase shift in the range of 0.1 X 10(-6) rad rms/Hz1/2 is predicted for typical fibers and diode lasers. Experimentally, a noise equivalent phase shift of 2.5 x 10(-7) rad rmS/HZ1/2 at 10 kHz was observed, with a detector current of 3 muA.

引用

页码：643 / 653

页数：11

共 17 条

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