Refractive index and temperature sensor based on cleaved taper and spherical structure

An in-line Mach-Zehnder interferometer (MZI) for simultaneous measurement of temperature and refractive index (RI) is proposed and demonstrated. The sensor is composed of cleaved taper, single-mode fiber (SMF) and spherical structure. Using precision device to measure the position of waist, the clea...

Full description

Saved in:
Bibliographic Details
Published in:Optoelectronics letters 2020-05, Vol.16 (3), p.171-175
Main Authors: Zhong, Yi-mei, Tong, Zheng-rong, Song, Dian-you, Zhang, Wei-hua, Qin, Juan, Gao, Wen-lin
Format: Article
Language:English
Subjects:
Lasers
Mach-Zehnder interferometers
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
Position measurement
Refractivity
Sensors
Structural stability
Tapering
Temperature sensors
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:An in-line Mach-Zehnder interferometer (MZI) for simultaneous measurement of temperature and refractive index (RI) is proposed and demonstrated. The sensor is composed of cleaved taper, single-mode fiber (SMF) and spherical structure. Using precision device to measure the position of waist, the cleaved taper structure is obtained by cutting the taper structure. The sensitivities of the temperature are 0.052 nm/ °C and 0.037 nm/ °C in the temperature range of 25–70 °C, respectively. The RI sensitivities are −56.59 nm/RIU and −43.53 nm/RIU in the RI range of 1.335–1.38, respectively. This sensor has many advantages such as compact structure and good stability.
ISSN:1673-1905
1993-5013
DOI:10.1007/s11801-020-9088-z