Abstract

We report an optical-scanning, dual-fiber, extrinsic Fabry–Perot interferometer system for absolute measurement of microdisplacement. The system involves two air-gapped Fabry–Perot cavities, formed by fiber end faces, functioning as sensing and reference elements. Taking the scanning wavelength as an interconverter to compare the gap length of the sensing head with the reference-cavity length yields the absolute measurement of the sensing-cavity length. The measurement is independent of the wavelength-scanning accuracy, and the reference-cavity length can be self-calibrated simply by one’s changing the sensing-head length by an accurate value.

© 1997 Optical Society of America

Full Article  |  PDF Article
More Like This
Fiber-optic extrinsic Fabry–Perot interferometer sensors with three-wavelength digital phase demodulation

Markus Schmidt and Norbert Fürstenau
Opt. Lett. 24(9) 599-601 (1999)

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

Hongchun Gao, Yi Jiang, Liuchao Zhang, and Lan Jiang
Appl. Opt. 57(5) 1168-1173 (2018)

Exact analysis of low-finesse multimode fiber extrinsic Fabry-Perot interferometers

Ming Han and Anbo Wang
Appl. Opt. 43(24) 4659-4666 (2004)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (4)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (8)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Metrics