Optical signal processing of a distributed fiber-optic force sensor

Zhigao Li; Jian Zhou; Yingjun Pan; Shanglian Huang

doi:10.1117/12.156344

22 September 1993 Optical signal processing of a distributed fiber optical force sensor

Zhigao Li, Jian Zhou, Yingjun Pan, Shanglian Huang

Proceedings Volume 2101, Measurement Technology and Intelligent Instruments; (1993) https://doi.org/10.1117/12.156344
Event: Measurement Technology and Intelligent Instruments, 1993, Wuhan, China

Abstract

For the distributed fiber optical force sensor based on the principle of modecoupling of polarization-maintaining fiber and that of optical path compensation in the interference of quasi-monochromatic light, it is very important to process the weak optical signal from the sensing fiber. The paper analyzes the characteristics of the optical signal and suggests a Mach- Zehnder interferometer which includes an acouto-optical modulator and a polarized beam splitter to realize the polarization heterodyne interference. The method elimilates the iiifluences of light source fluctuation and back ground and cuts down the loss of the signal processing, so that it improves S/N ratio. The experiments coinicde well with the analysis.

Citation Download Citation

Zhigao Li, Jian Zhou, Yingjun Pan, and Shanglian Huang "Optical signal processing of a distributed fiber optical force sensor", Proc. SPIE 2101, Measurement Technology and Intelligent Instruments, (22 September 1993); https://doi.org/10.1117/12.156344

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