Multiplex architecture for 3 x 3 coupler based fiber optic sensors

Greg J. Reid; David A. Brown

doi:10.1117/12.165919

30 December 1993 Multiplex architecture for 3 x 3 coupler based fiber optic sensors

Greg J. Reid, David A. Brown

Proceedings Volume 2071, Distributed and Multiplexed Fiber Optic Sensors III; (1993) https://doi.org/10.1117/12.165919
Event: Optical Tools for Manufacturing and Advanced Automation, 1993, Boston, MA, United States

Abstract

This paper presents a frequency division multiplexing (FDM) design that is compatible with 3 X 3 coupler terminated Mach-Zehnder interferometric sensors. Unlike the FDM technique that is presently used with phase generated carrier (PGC) demodulation schemes, this technique does not require modulation of the wavelength of the laser source or the introduction of optical path differences (OPD) in the interferometer in order to generate a phase carrier modulation in the interferometer. The technique described in this paper relies simply on amplitude modulation (AM) of the light intensity and uses the three outputs of an interferometer to unambiguously recover the phase modulation in the interferometer.

Citation Download Citation

Greg J. Reid and David A. Brown "Multiplex architecture for 3 x 3 coupler based fiber optic sensors", Proc. SPIE 2071, Distributed and Multiplexed Fiber Optic Sensors III, (30 December 1993); https://doi.org/10.1117/12.165919

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