Refractometer based on tilted fiber Bragg grating incorporating with waist-enlarged fusion bitaper

Author

Jie Zheng ; Xinyong Dong ; Pengbing Hu ; Shuqin Zhang ; Shangzhong Jin ; Shum, Perry Ping

Author_Institution

Inst. of Optoelectron. Technol., China Jiliang Univ., Hangzhou, China

fYear

2012

fDate

13-16 Dec. 2012

Firstpage

1

Lastpage

3

Abstract

A novel all-fiber refractometer based on a tilted fiber Bragg grating (TFBG) incorporating with a waist-enlarged fusion bitaper (WEFBT) is proposed and experimentally demonstrated. The WEFBT is upstream spliced with the TFBG thus coupling some of the cladding modes launched by the TFBG into core mode while the cladding modes excited by the WEFBT will be combined backward into the core by the TFBG. Surrounding refractive index (SRI) modulates the signal´s intensity when it propagates as cladding mode and thus can be measured. Measurement range 1.358 to 1.448 has been achieved.

Keywords

Bragg gratings; fibre optic sensors; intensity modulation; optical fibre cladding; optical fibre fabrication; optical modulation; refractive index; refractometers; splicing; TFBG; all-fiber refractometer; cladding modes; core mode; optical coupling; optical splicing; signal intensity modulation; surrounding refractive index; tilted fiber Bragg grating; waist-enlarged fusion bitaper; Optical fiber sensors; Optical fibers; Optical filters; Optical reflection; Optical refraction; Refractometers; optical fiber sensors; tilted fiber Bragg gratings; waist-enlarged fusion bitapers;

fLanguage

English

Publisher

ieee

Conference_Titel

Photonics Global Conference (PGC), 2012

Conference_Location

Singapore

Print_ISBN

978-1-4673-2513-4

Type

conf

DOI

10.1109/PGC.2012.6457956

Filename

6457956