Fiber Optic Temperature Sensor Using Spectral Modulation

J. C. Hartl; E. W. Saaski; G. L. Mitchell

doi:10.1117/12.942516

23 March 1988 Fiber Optic Temperature Sensor Using Spectral Modulation

J. C. Hartl, E. W. Saaski, G. L. Mitchell

Proceedings Volume 0838, Fiber Optic and Laser Sensors V; (1988) https://doi.org/10.1117/12.942516
Event: Cambridge Symposium on Fiber Optics and Integrated Optoelectronics, 1987, Cambridge, MA, United States

Abstract

The refractive index of a material such as silicon changes rapidly with temperature at wavelengths near the band edge. This phenomenon can be used to sense temperature if the silicon or other material is used as a Fabry-Perot etalon. As temperature changes and the index varies, the etalon's spectral reflection characteristics will be affected. Using this effect and a spectral distribution readout technique it is possible to construct an optical temperature sensor with many desirable properties. These include a wide temperature range, typically -100 to + 400°C, long-term stability, insensitivity to connector and fiber losses, tolerance of fiber bending effects and rapid response. These sensors are fabricated using techniques similar to those used to manufacture semiconductor devices. This results in low production costs and the ability to produce sensors with reproducible performance.

Citation Download Citation

J. C. Hartl, E. W. Saaski, and G. L. Mitchell "Fiber Optic Temperature Sensor Using Spectral Modulation", Proc. SPIE 0838, Fiber Optic and Laser Sensors V, (23 March 1988); https://doi.org/10.1117/12.942516

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