Five-step phase-shifting white-light interferometry for the measurement of fiber optic extrinsic Fabry-Perot interferometers

Hongchun Gao; Yi Jiang; Liuchao Zhang; Lan JiANG

doi:10.1364/AO.57.001168

Five-step phase-shifting white-light interferometry for the measurement of fiber optic extrinsic Fabry-Perot interferometers

Hongchun Gao, Yi Jiang^*, Liuchao Zhang, Lan JiANG

^*Corresponding author for this work

Beijing Institute of Technology

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

23 Citations (Scopus)

Abstract

Five-step phase-shifting white-light interferometry is presented for interrogating the absolute cavity length of the fiber optic extrinsic Fabry-Perot interferometer (EFPi). it combines ideas of phase-shifting interferometry and white-light interferometry (WLi) to extend the measurement range of fiber optic WLi. Five sub-interferograms intercepted from the white-light optical spectrum are used to recover the optical path difference (OPD) of the EFPi. This method is demonstrated to interrogate a wider range of OPD. The experimental results show that the measurement resolution ranges from 0.5 μm to 5 μm with cavity length ranges from 16 μm to 12,402 μm, and it has a great advantage in measuring EFPis with short cavity lengths.

Original language	English
Pages (from-to)	1168-1173
Number of pages	6
Journal	Applied Optics
Volume	57
Issue number	5
DOIs	https://doi.org/10.1364/AO.57.001168
Publication status	Published - 10 Feb 2018

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abstract = "Five-step phase-shifting white-light interferometry is presented for interrogating the absolute cavity length of the fiber optic extrinsic Fabry-Perot interferometer (EFPi). it combines ideas of phase-shifting interferometry and white-light interferometry (WLi) to extend the measurement range of fiber optic WLi. Five sub-interferograms intercepted from the white-light optical spectrum are used to recover the optical path difference (OPD) of the EFPi. This method is demonstrated to interrogate a wider range of OPD. The experimental results show that the measurement resolution ranges from 0.5 μm to 5 μm with cavity length ranges from 16 μm to 12,402 μm, and it has a great advantage in measuring EFPis with short cavity lengths.",

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AU - Gao, Hongchun

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AU - JiANG, Lan

PY - 2018/2/10

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AB - Five-step phase-shifting white-light interferometry is presented for interrogating the absolute cavity length of the fiber optic extrinsic Fabry-Perot interferometer (EFPi). it combines ideas of phase-shifting interferometry and white-light interferometry (WLi) to extend the measurement range of fiber optic WLi. Five sub-interferograms intercepted from the white-light optical spectrum are used to recover the optical path difference (OPD) of the EFPi. This method is demonstrated to interrogate a wider range of OPD. The experimental results show that the measurement resolution ranges from 0.5 μm to 5 μm with cavity length ranges from 16 μm to 12,402 μm, and it has a great advantage in measuring EFPis with short cavity lengths.

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Five-step phase-shifting white-light interferometry for the measurement of fiber optic extrinsic Fabry-Perot interferometers

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