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Proceedings Paper

Optical micro-resonator chemical sensor
Author(s): Anna Pyayt; Xuanqi Zhang; Jingdong Luo; Alex Jen; Larry Dalton; Antao Chen
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Paper Abstract

Polymers that contain conjugated molecules can change their index of refraction upon bonding with high explosive molecules. These polymers can be incorporated into micro-ring resonators as trace explosive sensor. Since the resonator cavity itself is made of sensing material, the detection is intrinsic, which may lead to higher sensitivity and faster response than other fiber optic chemical sensors. Photobleaching was used for the fabrication of the microrings resonators. The sensor has shown ppb level of sensitivity to the vapor of an explosive stimulant 2,4- dinitrotoluene and is insensitive to common chemical pollutants including nitrates, sulfates and phosphates.

Paper Details

Date Published: 3 May 2007
PDF: 6 pages
Proc. SPIE 6556, Micro (MEMS) and Nanotechnologies for Defense and Security, 65561D (3 May 2007); doi: 10.1117/12.720329
Show Author Affiliations
Anna Pyayt, Univ. of Washington (United States)
Xuanqi Zhang, Univ. of Washington (United States)
Jingdong Luo, Univ. of Washington (United States)
Alex Jen, Univ. of Washington (United States)
Larry Dalton, Univ. of Washington (United States)
Antao Chen, Univ. of Washington (United States)

Published in SPIE Proceedings Vol. 6556:
Micro (MEMS) and Nanotechnologies for Defense and Security
Thomas George; Zhongyang Cheng, Editor(s)

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