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Proceedings Paper

A multichannel SPR biosensor with a fixed detection system
Author(s): Boonsong Sutapun; Armote Somboonkaew; Ratthasart Amrit; Supanit Porntheeraphat; Nongluck Houngkamhang; Toemsak Srikhirin
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Paper Abstract

Surface plasmon resonance (SPR) sensors with spectral interrogation provide a high refractive index resolution, a large dynamic range and a fixed optical detection module. In this work, we propose a new spectral detection unit that uses only one spectrometer to measure the SPR spectrum from multiple sensing spots rapidly and serially without any mechanical movement. This spectral detection unit is designed based on a spatial light modulator (SLM) configured as a programmable optical aperture for the spectrometer. To demonstrate this concept, a five-channel SPR sensor was built based on the proposed multichannel detection unit and we evaluated the device performance using a refractive index test. The average device refractive index resolution was 1.4 x 10-6 refractive index units (RIU).

Paper Details

Date Published: 9 November 2010
PDF: 8 pages
Proc. SPIE 7853, Advanced Sensor Systems and Applications IV, 78530Q (9 November 2010); doi: 10.1117/12.870426
Show Author Affiliations
Boonsong Sutapun, National Electronics and Computer Technology Ctr. (Thailand)
Armote Somboonkaew, National Electronics and Computer Technology Ctr. (Thailand)
Ratthasart Amrit, National Electronics and Computer Technology Ctr. (Thailand)
Supanit Porntheeraphat, National Electronics and Computer Technology Ctr. (Thailand)
Nongluck Houngkamhang, Mahidol Univ. (Thailand)
Toemsak Srikhirin, Mahidol Univ. (Thailand)

Published in SPIE Proceedings Vol. 7853:
Advanced Sensor Systems and Applications IV
Brian Culshaw; Yanbiao Liao; Anbo Wang; Xiaoyi Bao; Xudong Fan; Lin Zhang, Editor(s)

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