Progress In Otdr Optical Fiber Sensor Networks

F X Desforoes; P. Oraindoroe; L B Jeunhomme; H J Arditty

doi:10.1117/12.937520

28 April 1987 Progress In Otdr Optical Fiber Sensor Networks

F X Desforoes, P. Oraindoroe, L B Jeunhomme, H J Arditty

Proceedings Volume 0718, Fiber Optic and Laser Sensors IV; (1987) https://doi.org/10.1117/12.937520
Event: Cambridge Symposium-Fiber/LASE '86, 1986, Cambridge, MA, United States

Abstract

There is great interest for distributed or multiplexed fiber optic sensor networks for process control automation. Optical Time Domain Reflectometry (OTDR) is a potentially very useful method for monitoring several sensors distributed along a fiber, but its actual capabilities, using present concepts, are too restricted to allow competitive industrial performance. We present here a novel scheme of OTDR fiber sensor multiplexing which allows, ,the monitoring of up to 50 ON/OFF switches along a given fiber under practical and realistic conditions. Detection of reflected, rather than backscattered, light makes much better use of the in-line loss introduced by each sensor, yielding a larger dynamic range which explains this very significant improvement in the number of multiplexed sensors. Theoretical considerations about this novel scheme and its limits, taking into account present OTDR technology, are presented together with experimental results of a twenty ON/OFF sensor network feasibility prototype .

Citation Download Citation

F X Desforoes, P. Oraindoroe, L B Jeunhomme, and H J Arditty "Progress In Otdr Optical Fiber Sensor Networks", Proc. SPIE 0718, Fiber Optic and Laser Sensors IV, (28 April 1987); https://doi.org/10.1117/12.937520

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