Determination of path length difference by low coherence interference spectrum
作者： Hui-Kang Teng , Chia-Nan Chang , Kuo-Chen Lang
DOI: 10.1016/J.OPTLASENG.2004.01.002
关键词: Physics 、 Interferometric visibility 、 Michelson interferometer 、 Coherence (physics) 、 Degree of coherence 、 Mach–Zehnder interferometer 、 Coherence length 、 Optical path length 、 Optics 、 Interferometry
摘要: Abstract Path length difference is the key parameter in two-beam interferometer, especially low coherence interferometer. It determines visibility of interference fringes. In this study, we present a method to determine path between two arms fiber optic Mach–Zehnder interferometer by evaluating peaks power distribution spectrum with wide band light source. The experimental results are close agreement theoretical calculations.
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