A polarization-insensitive fiber optic sensor based on Faraday rotator mirror

Ya-bin Zhang; Xin-tong Sun; Chao Cai; Chao Zhang

doi:10.1117/12.900880

8 September 2011 A polarization-insensitive fiber optic sensor based on Faraday rotator mirror

Ya-bin Zhang, Xin-tong Sun, Chao Cai, Chao Zhang

Proceedings Volume 8191, International Symposium on Photoelectronic Detection and Imaging 2011: Sensor and Micromachined Optical Device Technologies; 81911V (2011) https://doi.org/10.1117/12.900880
Event: International Symposium on Photoelectronic Detection and Imaging 2011, 2011, Beijing, China

Abstract

Fiber-optic sensors are widely used and researched in-depth. Interferometric fiber optic sensor is an important category of fiber optic sensor because of its high sensitivity. However, polarization-induced fading phenomena always appear in the output of sensors which constructed of low-birefringence single mode fibers. In this paper, we firstly give the structure of a fiber-optic sensor based on M-Z fiber optic interferometer. And we use polarization optics to study the light state in this sensor. Taking the polarization state of input light in fiber-optic interferometer is random we calculate the Jones vector of the output light. To study the polarization fading phenomena we calculate the intensity of output light. We caculate the degree of polarization fading by computer software. The result shows that sensing signal will completely vanish. Thus we can't get steady sensing signal and we must use depolarization fading technology. We give a simple structure of a polarizationinsensitive optical fiber sensor. Two Faraday rotator mirrors (FRM) are added into Michelson optical fiber interferometer to improve the visibility. We also use polarization optics to study the output light of this structrue. Theoretical analysis and experimental study indicates that this convenient method can improve visibility to 1. The feature of the method is convenient, accuracy and practical. And it can apply to various kinds of complex construction.

Citation Download Citation

Ya-bin Zhang, Xin-tong Sun, Chao Cai, and Chao Zhang "A polarization-insensitive fiber optic sensor based on Faraday rotator mirror", Proc. SPIE 8191, International Symposium on Photoelectronic Detection and Imaging 2011: Sensor and Micromachined Optical Device Technologies, 81911V (8 September 2011); https://doi.org/10.1117/12.900880

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
4 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Fiber optics sensors

Polarization

Interferometers

Mirrors

Sensors

Fiber optics

Erbium

Show All Keywords

Keywords/Phrases

Search In:

Publication Years