Dual biconical fiber humidity sensor at 2um

Weijuan Chen; Zhihao Chen; Yi Zhang; Huibin Chen; Hui Li; Yanhui Lian

doi:10.1117/12.2500042

23 October 2018 Dual biconical fiber humidity sensor at 2μm

Weijuan Chen, Zhihao Chen, Yi Zhang, Huibin Chen, Hui Li, Yanhui Lian

Proceedings Volume 10821, Advanced Sensor Systems and Applications VIII; 1082109 (2018) https://doi.org/10.1117/12.2500042
Event: SPIE/COS Photonics Asia, 2018, Beijing, China

Abstract

This paper studies a humidity dual biconical fiber sensor coated with agarose gel. The sensor was fabricated by the taper drawing technique of using a LZM-100 fusion splicer from single mode fiber, forming a Mach-Zehnder interferometer. Humidity modifies the refractive index of the coating layer, which in turn alters the high order modes along the dual biconical fiber segment and causes a detectable shift to the interference pattern. Due to the strong light absorption of agarose at 2 μm, the sensitivity of sensor was greatly enhanced. It has been found that the sensor’s sensitivity operated at 2 μm is tens of times higher than that at 1.55 μm region.

Citation Download Citation

Weijuan Chen, Zhihao Chen, Yi Zhang, Huibin Chen, Hui Li, and Yanhui Lian "Dual biconical fiber humidity sensor at 2μm", Proc. SPIE 10821, Advanced Sensor Systems and Applications VIII, 1082109 (23 October 2018); https://doi.org/10.1117/12.2500042

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