Simultaneous measurement of seawater temperature and depth using polarization-maintaining fiber Bragg grating and extrinsic Fabry-Perot interferometer

Chen Zhao; Fuyin Wang; Wenhui Wang; Hong Luo; Shuidong Xiong

doi:10.1117/12.2505320

12 December 2018 Simultaneous measurement of seawater temperature and depth using polarization-maintaining fiber Bragg grating and extrinsic Fabry-Perot interferometer

Chen Zhao, Fuyin Wang, Wenhui Wang, Hong Luo, Shuidong Xiong

Author Affiliations +

Proceedings Volume 10849, Fiber Optic Sensing and Optical Communication; 108490T (2018) https://doi.org/10.1117/12.2505320
Event: International Symposium on Optoelectronic Technology and Application 2018, 2018, Beijing, China

Abstract

In this paper, a sensor for simultaneous measurement of seawater temperature and depth using polarization-maintaining fiber Bragg grating (PM-FBG) and extrinsic Fabry-Perot interferometer (EFPI) is presented. The PM-FBG and the EFPI are cascaded into the sensor. Epoxy resin is used to increase the temperature sensitivity of PM-FBG while an aluminum sleeve is used to reduce the pressure sensitivity of PM-FBG. And the EFPI is formed by the pigtail of the PM-FBG and the stainless steel diaphragm at the end of the aluminum sleeve. The new sensor design, fabrication, packaging, and measurement are addressed. The performance of the sensor for the concurrent measurement of pressure and temperature is investigated by analyzing the experimental data, and the characteristic curves for the measurement of the sensor are presented. Experimental results show that the temperature sensitivity is about 25.18 pm/°C (left peak) and 24.69 pm/°C (right peak) and the pressure sensitivity is about 35.78 um/MPa.

Citation Download Citation

Chen Zhao, Fuyin Wang, Wenhui Wang, Hong Luo, and Shuidong Xiong "Simultaneous measurement of seawater temperature and depth using polarization-maintaining fiber Bragg grating and extrinsic Fabry-Perot interferometer", Proc. SPIE 10849, Fiber Optic Sensing and Optical Communication, 108490T (12 December 2018); https://doi.org/10.1117/12.2505320

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