Abrupt taper Michelson interferometer using heterodyne for measuring refractive index

Yu Chan Liang; Chia Chi Liao; Yu Lung Lo

doi:10.1109/LPT.2014.2355262

Abrupt taper Michelson interferometer using heterodyne for measuring refractive index

Yu Chan Liang, Chia Chi Liao, Yu Lung Lo

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

A method is proposed for measuring the refractive index (RI) of aqueous solutions using an abrupt taper Michelson interferometer and a synthetic heterodyne detection scheme. In the proposed approach, the abrupt taper Michelson interferometer is implemented with a Fabry-Perot cavity in a path-matching differential interferometer. The RI of the aqueous solution is then extracted from the phase shift of the heterodyne demodulated interferometric signal. The experimental results show that a change in the RI of 0.0001 prompts a phase shift of ~1.35° in the demodulated signal given the use of an abrupt taper Michelson interferometer with a sensing length of 20 cm.

Original language	English
Article number	6892998
Pages (from-to)	2330-2333
Number of pages	4
Journal	IEEE Photonics Technology Letters
Volume	26
Issue number	23
DOIs	https://doi.org/10.1109/LPT.2014.2355262
Publication status	Published - 2014 Dec 1

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

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10.1109/LPT.2014.2355262

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abstract = "A method is proposed for measuring the refractive index (RI) of aqueous solutions using an abrupt taper Michelson interferometer and a synthetic heterodyne detection scheme. In the proposed approach, the abrupt taper Michelson interferometer is implemented with a Fabry-Perot cavity in a path-matching differential interferometer. The RI of the aqueous solution is then extracted from the phase shift of the heterodyne demodulated interferometric signal. The experimental results show that a change in the RI of 0.0001 prompts a phase shift of ~1.35° in the demodulated signal given the use of an abrupt taper Michelson interferometer with a sensing length of 20 cm.",

author = "Liang, {Yu Chan} and Liao, {Chia Chi} and Lo, {Yu Lung}",

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AU - Liang, Yu Chan

AU - Liao, Chia Chi

AU - Lo, Yu Lung

PY - 2014/12/1

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N2 - A method is proposed for measuring the refractive index (RI) of aqueous solutions using an abrupt taper Michelson interferometer and a synthetic heterodyne detection scheme. In the proposed approach, the abrupt taper Michelson interferometer is implemented with a Fabry-Perot cavity in a path-matching differential interferometer. The RI of the aqueous solution is then extracted from the phase shift of the heterodyne demodulated interferometric signal. The experimental results show that a change in the RI of 0.0001 prompts a phase shift of ~1.35° in the demodulated signal given the use of an abrupt taper Michelson interferometer with a sensing length of 20 cm.

AB - A method is proposed for measuring the refractive index (RI) of aqueous solutions using an abrupt taper Michelson interferometer and a synthetic heterodyne detection scheme. In the proposed approach, the abrupt taper Michelson interferometer is implemented with a Fabry-Perot cavity in a path-matching differential interferometer. The RI of the aqueous solution is then extracted from the phase shift of the heterodyne demodulated interferometric signal. The experimental results show that a change in the RI of 0.0001 prompts a phase shift of ~1.35° in the demodulated signal given the use of an abrupt taper Michelson interferometer with a sensing length of 20 cm.

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Abrupt taper Michelson interferometer using heterodyne for measuring refractive index

Abstract

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