An interferometric sensor based on visibility modulation

Liang Zhang; Yuanfu Lu; Yuming Dong; Guohua Jiao; Wei Chen; Jiancheng Lv

doi:10.1117/12.2262411

27 April 2017 An interferometric sensor based on visibility modulation

Liang Zhang, Yuanfu Lu, Yuming Dong, Guohua Jiao, Wei Chen, Jiancheng Lv

Proceedings Volume 10208, Fiber Optic Sensors and Applications XIV; 1020808 (2017) https://doi.org/10.1117/12.2262411
Event: SPIE Commercial + Scientific Sensing and Imaging, 2017, Anaheim, CA, United States

Abstract

We propose and demonstrate an interferometric sensor based on visibility modulation. In the interferometric sensor, a section of polarization maintain (PM) fiber is spliced into one arm as the sensing head. Due to the interference between the two beams in the two arms, respectively, an interferometric fringe can be obtained. The birefringence of the PM fiber splits the beam in the sensing arm, yielding a visibility envelop in the interferometric fringe. Strain applied on the PM fiber can be demodulated by measuring the visibility change in a given wavelength. Experimental result shows that the sensor can achieve resolution of up to 28 nano-strain. This demodulation scheme is immunity to the wavelength shift and power fluctuation of OSA, thus improving the accuracy of the sensor. This type of sensor can be improved by using a wavelength-swept laser or a mode-locked fiber laser.

Conference Presentation

Citation Download Citation

Liang Zhang, Yuanfu Lu, Yuming Dong, Guohua Jiao, Wei Chen, and Jiancheng Lv "An interferometric sensor based on visibility modulation", Proc. SPIE 10208, Fiber Optic Sensors and Applications XIV, 1020808 (27 April 2017); https://doi.org/10.1117/12.2262411

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available