Birefringent bragg grating in c-shaped optical fiber as a temperature-insensitive refractometer

Birefringent bragg grating in c-shaped optical fiber as a temperature-insensitive refractometer

We demonstrate a simple-to-fabricate refractometer based on the inscription of fiber Bragg gratings in a special C-shaped optical fiber. The C-shaped fiber was drawn into shape using a quarter cladding removed preform of a commercial standard single-mode fiber by simple machining. The sensor did not...

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Bibliographic Details
Main Authors: Tan, Rex Xiao, Ho, Daryl, Tse, Chun Ho, Tan, Yung Chuen, Yoo, Seong Woo, Tjin, Swee Chuan, Ibsen, Morten
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2018
Subjects:
Fiber Bragg Gratings
DRNTU::Engineering::Electrical and electronic engineering
Fiber Sensors
Online Access:https://hdl.handle.net/10356/89578
http://hdl.handle.net/10220/46301
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Institution: Nanyang Technological University
Language: English
Description
Summary:We demonstrate a simple-to-fabricate refractometer based on the inscription of fiber Bragg gratings in a special C-shaped optical fiber. The C-shaped fiber was drawn into shape using a quarter cladding removed preform of a commercial standard single-mode fiber by simple machining. The sensor did not suffer from cross-sensitivity of the refractive index with ambient temperature fluctuations, commonly occurring with many optical fiber refractometers. A refractive index sensitivity of 1300 pm per refractive index unit (RIU) was achieved without employing any additional sensitization techniques such as tapering or etching.

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