Title

Zeolite Thin Film-coated Long Period Fiber Grating Sensor for Measuring Trace Chemical

Abstract

This paper reports the development of a new zeolite thin film-coated long period fiber grating (LPFG) sensor for direct measurement of trace organic vapors. The sensor was fabricated by growing pure silica MFI-type zeolite thin film on the optical fiber grating by in situ hydrothermal crystallization. The sensor measures chemical vapor concentration by monitoring the molecular adsorption-induced shift of LPFG resonant wavelength in near infrared (IR) region. Upon loading analyte molecules, the zeolite's refractive index changes in the close vicinity of the fiber index where the LPFG has a large response to achieve high sensitivity.

Department(s)

Electrical and Computer Engineering

Sponsor(s)

United States. Department of Energy

Keywords and Phrases

Fiber Optics Sensors; Gratings; Nanomaterials

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2008 Optical Society of America, All rights reserved.


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