Phase Measurement of Optical Fiber via Weak-Value Amplification

A precision phase detection scheme employing a weak-value amplification (WVA) technique is proposed and demonstrated. With a minimum detectable phase change of <inline-formula> <tex-math notation="LaTeX">\sim \!10^{-5} </tex-math></inline-formula> rad, the present s...

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Bibliographic Details
Published inIEEE sensors journal Vol. 19; no. 16; pp. 6742 - 6747
Main Authors Luo, Zhengchun, Wu, Hao, Xu, Liping, Chang, Tianying, Wu, Peng, Du, Chunlei, Cui, Hong-Liang
Format Journal Article
LanguageEnglish
Published New York IEEE 15.08.2019
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Amplification
Change detection
Crystals
fiber optics
Optical components
Optical fibers
Optical interferometry
Optical polarization
Optical sensors
Optical variables measurement
Phase measurement
Phase transitions
polarization interference
weak value amplification
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Summary:A precision phase detection scheme employing a weak-value amplification (WVA) technique is proposed and demonstrated. With a minimum detectable phase change of <inline-formula> <tex-math notation="LaTeX">\sim \!10^{-5} </tex-math></inline-formula> rad, the present system rivals similar free-space schemes using bulk optical components only. The new setup is tested in a simple hydro-pressure detection experiment, with a short segment of fiber under water, showing a remarkable responsivity to small pressure changes.
ISSN:1530-437X
1558-1748
DOI:10.1109/JSEN.2019.2911321