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Optics Letters


  • Vol. 36, Iss. 20 — Oct. 15, 2011
  • pp: 4092–4094

Phase sensitive SPR sensor for wide dynamic range detection

Y. H. Huang, H. P. Ho, S. Y. Wu, S. K. Kong, W. W. Wong, and P. Shum  »View Author Affiliations

Optics Letters, Vol. 36, Issue 20, pp. 4092-4094 (2011)

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Phase detection has been utilized to enhance the sensitivity of surface plasmon resonance (SPR) sensors for a long time. However, an inherent drawback for phase sensitive SPR sensors are their limited dynamic range, which has greatly hindered wide applications of such sensors. In this Letter, a design combining phase detection and angular interrogation has been proposed to provide an SPR sensor with both high sensitivity and wide dynamic range. As a result, a resolution of 2.2 × 10 7 RIU with a dynamic range of over 0.06 RIU has been achieved simultaneously. An added advantage of this design is the flexibility for sensitivity and dynamic range adjustment.

© 2011 Optical Society of America

OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.5060) Instrumentation, measurement, and metrology : Phase modulation
(120.5410) Instrumentation, measurement, and metrology : Polarimetry
(170.3890) Medical optics and biotechnology : Medical optics instrumentation
(170.4580) Medical optics and biotechnology : Optical diagnostics for medicine
(240.6680) Optics at surfaces : Surface plasmons

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: June 8, 2011
Revised Manuscript: September 2, 2011
Manuscript Accepted: September 10, 2011
Published: October 14, 2011

Virtual Issues
Vol. 6, Iss. 11 Virtual Journal for Biomedical Optics

Y. H. Huang, H. P. Ho, S. Y. Wu, S. K. Kong, W. W. Wong, and P. Shum, "Phase sensitive SPR sensor for wide dynamic range detection," Opt. Lett. 36, 4092-4094 (2011)

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