Temperature-compensated fiber optic strain sensor based on polarization-rotated reflection

Wojtek J. Bock; Tomasz R. Wolinski

doi:10.1117/12.24841

1 December 1990 Temperature-compensated fiber optic strain sensor based on polarization-rotated reflection

Wojtek J. Bock, Tomasz R. Wolinski

Proceedings Volume 1370, Fiber Optic Smart Structures and Skins III; (1990) https://doi.org/10.1117/12.24841
Event: SPIE Microelectronic Interconnect and Integrated Processing Symposium, 1990, San Jose, United States

Abstract

A novel structure for a temperature-compensated fiber-optic strain sensor has been demonstrated both in reflection and in transmission configuration. In the transmission configuration the sensor consists of two identical (sensing and compensating) parts of a highly birefringent bow-tie polarization-maintaining fiber, spliced at 90 deg in relation to their polarization axes. If both parts remain at the same temperature, their total temperature-induced phase retardation will cancel out. The reflection configuration, incorporating the principle of polarization-rotated reflection, also has this structure but in addition requires a reflective mirror deposited at the end of the sensing section and a polarization-preserving coupler to separate the output signal. This sensor can operate using straightforward and cost-effective electronic signal processing and its gauge factor is at least 2 orders of magnitude greater than that of the most sensitive conventional strain gauges.

Citation Download Citation

Wojtek J. Bock and Tomasz R. Wolinski "Temperature-compensated fiber optic strain sensor based on polarization-rotated reflection", Proc. SPIE 1370, Fiber Optic Smart Structures and Skins III, (1 December 1990); https://doi.org/10.1117/12.24841

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