Fiber sphere-embedded long-period fiber grating for curvature measurement with high sensitivity

Dewen Hou; Juan Kang; Xiaolei Wang; Qian Zhang; Xiaoying Zhou; ChunLiu Zhao; Xinyong Dong

doi:10.1117/1.OE.57.4.046101

4 April 2018 Fiber sphere-embedded long-period fiber grating for curvature measurement with high sensitivity

Dewen Hou, Juan Kang, Xiaolei Wang, Qian Zhang, Xiaoying Zhou, ChunLiu Zhao, Xinyong Dong

Author Affiliations +

Optical Engineering, Vol. 57, Issue 4, 046101 (April 2018). https://doi.org/10.1117/1.OE.57.4.046101

Abstract

A fiber sphere-embedded long-period fiber grating (LPFG) sensor has been proposed and fabricated for curvature measurement with high sensitivity. Compared with the normal LPFG, the embedded fiber sphere excites cladding modes and two dips of the output spectrum have been observed. The curvature measurement can be realized by monitoring the shift of the two dips. Experimental results show that the highest curvature sensitivity is up to −104.642 nm/m^− 1 with the curvature ranging from 0 to 0.71 m^− 1. The temperature response of the sensor has also been studied and a quadratic linear relationship between the dip shift and the temperature has been observed. The highest temperature sensitivity is 0.36 nm / ° C with the temperature range between 20°C and 90°C.

Citation Download Citation

Dewen Hou, Juan Kang, Xiaolei Wang, Qian Zhang, Xiaoying Zhou, ChunLiu Zhao, and Xinyong Dong "Fiber sphere-embedded long-period fiber grating for curvature measurement with high sensitivity," Optical Engineering 57(4), 046101 (4 April 2018). https://doi.org/10.1117/1.OE.57.4.046101

Received: 12 December 2017; Accepted: 14 March 2018; Published: 4 April 2018

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