Optical fibre Fabry-Perot sensor for the detection of small vibrations and displacements

I. Paulicka

doi:10.1117/12.2308859

23 July 1993 Optical fibre Fabry-Perot sensor for the detection of small vibrations and displacements

I. Paulicka

Proceedings Volume 1983, 16th Congress of the International Commission for Optics: Optics as a Key to High Technology; 1983C8 (1993) https://doi.org/10.1117/12.2308859
Event: 16th Congress of the International Commission for Optics: Optics as a Key to High Technology, 1993, Budapest, Hungary

Abstract

A new method to linearly measure the phase of light wave on interferometric fiber optic sensor is presented in this paper. We linearly modulate the phase of one optic fiber arm of Michelson a great quantity (2n or more). If this modulated light interferes with another arm , the subsequent interferential signal will be a cosine function, and it's phase includes the phase information of Michelson fiber optic sensor. If it is compared with the reference electric sine signal ,we will obtain the time difference of these two signal by pass- zero detection, and it is linear with the phase change of sensor resulted from environment factors. This method needs neither closed-loop servo system nor two LD light sources of different wave length, and it also needs no appendent optic fiber arm. This method is very simple to realize.

Citation Download Citation

I. Paulicka "Optical fibre Fabry-Perot sensor for the detection of small vibrations and displacements", Proc. SPIE 1983, 16th Congress of the International Commission for Optics: Optics as a Key to High Technology, 1983C8 (23 July 1993); https://doi.org/10.1117/12.2308859

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