Performance analysis of low-coherence interferometry, taking into consideration optical beat noise

被引：4
|
作者：
Yoshino, T
Ali, MR
Sarker, BC
机构：
[1] Kaisei Acad, Dept Elect Engn, Arakawa Ku, Tokyo 1160013, Japan
[2] Gunma Univ, Satellite Venture Business Lab, Kiryu, Gumma 3768515, Japan
来源：
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2005年 / 22卷 / 02期
关键词：
D O I：
10.1364/JOSAB.22.000328
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
An extensive study for the optical beat noise in low-coherence two-beam interferometry under uniform spectrum illumination is presented. A new formula for the beat noise is derived. The analytical formulas for the signal-to-noise ratio and the resolution in the detection of small phase change and absolute optical path length are given. The effects of the beat noise on the achievable sensing performances in real sensing systems are numerically evaluated and discussed. The sensing performances are improved by use of a wider optical bandwidth of the illuminating light. (C) 2005 Optical Society of America.
引用
收藏
页码：328 / 335
页数：8
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