Investigations of refractive index sensing with a photonic crystal fiber interferometer

Author

Hu, Hao-Teng ; Chen, Chien-Hsing ; Chen, Yi-Chun ; Wang, Jian-Neng ; Tang, Jaw-Luen ; Wu, Wei-Te

Author_Institution

Dept. of Phys., Nat. Chung Cheng Univ., Chiayi, Taiwan

fYear

2010

fDate

14-16 Dec. 2010

Firstpage

1

Lastpage

3

Abstract

We report a photonic crystal fiber (PCF) interferometer was realized by fusion splicing a short section of PCF between two standard single mode fibers (Corning SMF-28) using a Fitel-S175 splicer. The fully collapsed air holes of the PCF at the spice regions allow the coupling of PCF core and cladding modes. The transmission spectrum exhibits sinusoidal interference pattern which shifts differently when the cladding/core surface of the PCF is immersed with different RI of the surrounding medium. The results for different concentrations of sucrose solution show that a resolution of 1.21×10^-4 -4.65×10^-4 RIU is achieved for refractive indices in the range of 1.333 to 1.403, suggesting that the PCF interferometer are attractive for chemical, biological, and biochemical sensing with aqueous solutions.

Keywords

fibre optic sensors; holey fibres; light interferometers; optical fibre cladding; optical fibre fabrication; photonic crystals; refractive index; splicing; Fitel-S175 splicer; cladding modes; fusion splicing; photonic crystal fiber interferometer; refractive index sensing; sinusoidal interference pattern; standard single mode fibers; Interference; Optical fiber sensors; Optical fibers; Optical interferometry; Refractive index;

fLanguage

English

Publisher

ieee

Conference_Titel

Photonics Global Conference (PGC), 2010

Conference_Location

Singapore

Print_ISBN

978-1-4244-9882-6

Type

conf

DOI

10.1109/PGC.2010.5705999

Filename

5705999