Temperature sensor based on a tapered optical fiber with ALD nanofilm

Shan Zhu; Fufei Pang; Jianxiang Wen; Ziwen Zhao; Tingyun Wang

doi:10.1117/12.2194542

28 September 2015 Temperature sensor based on a tapered optical fiber with ALD nanofilm

Shan Zhu, Fufei Pang, Jianxiang Wen, Ziwen Zhao, Tingyun Wang

Proceedings Volume 9634, 24th International Conference on Optical Fibre Sensors; 963474 (2015) https://doi.org/10.1117/12.2194542
Event: International Conference on Optical Fibre Sensors (OFS24), 2015, Curitiba, Brazil

Abstract

A temperature sensor with high sensitivity based on a tapered optical fiber with Al₂O₃ nanofilm by atomic layer deposition (ALD) technology is presented. Attributed to the high refractive index Al₂O₃ nanofilm overlay, an asymmetry Fabry-Perot interferometer is formed along the tapered fiber. Based on the ray-optic analysis, the resonant dip in the interference transmission spectrum depends on the phase delay variation induced by the Goos-Hänchen shift at the nanofilm-coating interface. As a result, the interference transmission spectrum shows good sensitivity to the change of surrounding refractive index. In this work, a temperature-sensitive silicone gel is coated around the fiber taper with Al₂O₃ nanofilm to realize a high sensitivity temperature sensor. The high sensitivity of 2.44 nm/°C is obtained.

Citation Download Citation

Shan Zhu, Fufei Pang, Jianxiang Wen, Ziwen Zhao, and Tingyun Wang "Temperature sensor based on a tapered optical fiber with ALD nanofilm", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 963474 (28 September 2015); https://doi.org/10.1117/12.2194542

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