Quasidistributed temperature sensor based on dense wavelength-division multiplexing optical fiber delay

Jun Su; Ning Yang; Zhiqiang Fan; Qi Qiu

doi:10.1117/1.OE.56.10.106112

26 October 2017 Quasidistributed temperature sensor based on dense wavelength-division multiplexing optical fiber delay

Jun Su, Ning Yang, Zhiqiang Fan, Qi Qiu

Author Affiliations +

Optical Engineering, Vol. 56, Issue 10, 106112 (October 2017). https://doi.org/10.1117/1.OE.56.10.106112

Abstract

We report on a fiber-optic delay-based quasidistributed temperature sensor with high precision. The device works by detecting the delay induced by the temperature instead of the spectrum. To analyze the working principle of this sensor, the thermal dependence of the fiber-optic delay was theoretically investigated and the delay-temperature coefficient was measured to be 42.2 ps/km°C. In this sensor, quasidistributed measurement of temperature could be easily realized by dense wavelength-division multiplexing and wavelength addressing. We built and tested a prototype quasidistributed temperature sensor with eight testing points equally distributed along a 32.61-km-long fiber. The experimental results demonstrate an average error of <0.1°C. These results prove that this quasidistributed temperature sensor is feasible and that it is a viable option for simple and economic temperature measurements.

Citation Download Citation

Jun Su, Ning Yang, Zhiqiang Fan, and Qi Qiu "Quasidistributed temperature sensor based on dense wavelength-division multiplexing optical fiber delay," Optical Engineering 56(10), 106112 (26 October 2017). https://doi.org/10.1117/1.OE.56.10.106112

Received: 6 July 2017; Accepted: 3 October 2017; Published: 26 October 2017

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