Discrimination of chemical vapor and temperature using an in-line modal interferometer based on an exterior hole-assisted polarization-maintaining photonic crystal fiber

Min-Seok Yoon; Naram Jun; Sang Bae Lee; Young-Geun Han

doi:10.1117/12.2058639

2 June 2014 Discrimination of chemical vapor and temperature using an in-line modal interferometer based on an exterior hole-assisted polarization-maintaining photonic crystal fiber

Min-Seok Yoon, Naram Jun, Sang Bae Lee, Young-Geun Han

Author Affiliations +

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 91574B (2014) https://doi.org/10.1117/12.2058639
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

A reflective in-line modal interferometer based on a polarization-maintaining photonic crystal fiber (PM-PCF) with two exterior air holes is proposed for simultaneous measurement of chemical vapor and temperature. After fusion-splicing the PM-PCF with a standard single-mode fiber, we collapse all of air holes in the PM-PCF resulting in two types of interference patterns between the core and the cladding modes in the PM-PCF depending on two polarization states. Since two large air holes at the facet of the proposed modal interferometer are left open, a chemical vapor can be infiltrated into the voids. Different sensitivities corresponding to input polarization states are utilized for discrimination between chemical vapor and temperature sensitivities.

Citation Download Citation

Min-Seok Yoon, Naram Jun, Sang Bae Lee, and Young-Geun Han "Discrimination of chemical vapor and temperature using an in-line modal interferometer based on an exterior hole-assisted polarization-maintaining photonic crystal fiber", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91574B (2 June 2014); https://doi.org/10.1117/12.2058639

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KEYWORDS

Interferometers

Polarization

Temperature metrology

Cladding

Photonic crystal fibers

Reflectivity

Single mode fibers

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