Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5007442 | Optics & Laser Technology | 2017 | 4 Pages |
Abstract
An in-fiber modal interferometer is presented and experimentally demonstrated for simultaneous measurement of curvature and temperature. The sensing part is fabricated by splicing single mode fiber (SMF) and hollow core fiber (HCF) via two abrupt tapered joints. Light couples to the wall of HCF due to the collapse in abrupt taper region and then modal interference occurs among multiple modes. Not only intensity but also wavelength of the dip around 1556Â nm linearly responses to the curvature and temperature change thus a sensitivity matrix could be built to demodulate both curvature and temperature simultaneously. In addition, the interference dip around 1540Â nm performs a decrease trend and the highest curvature sensitivity of 5.05Â dB/mâ1 is achieved in a wide range from 0.765Â mâ1 to 3.423Â mâ1.
Related Topics
Physical Sciences and Engineering
Engineering
Electrical and Electronic Engineering
Authors
Yong Zhao, Lu Cai, Xue-gang Li,