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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 30, Iss. 10 — May. 15, 2005
  • pp: 1138–1140

Optical biosensor with dispersion compensation

W. Zong, C. Thirstrup, M. H. Sørensen, and H. C. Pedersen  »View Author Affiliations


Optics Letters, Vol. 30, Issue 10, pp. 1138-1140 (2005)
http://dx.doi.org/10.1364/OL.30.001138


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Abstract

Dispersion limits performance in many optical systems. In surface plasmon resonance (SPR) biosensors, the sensing area is an optical element in which the dispersion depends on the effective refractive index of the biochemical compounds to be measured. We report a method of compensating for wavelength dispersion in SPR biosensors employing two integrated diffractive optical coupling elements in a polymer substrate. The dispersion compensation is achieved over the whole dynamic measurement range and provides a biosensor more robust to wavelength fluctuations than prism-coupler SPR systems. The concept can readily be employed in other types of sensor measuring refractive-index changes.

© 2005 Optical Society of America

OCIS Codes
(090.2890) Holography : Holographic optical elements
(120.4820) Instrumentation, measurement, and metrology : Optical systems
(130.6010) Integrated optics : Sensors
(240.6680) Optics at surfaces : Surface plasmons
(260.2030) Physical optics : Dispersion

Citation
W. Zong, C. Thirstrup, M. H. Sørensen, and H. C. Pedersen, "Optical biosensor with dispersion compensation," Opt. Lett. 30, 1138-1140 (2005)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-30-10-1138

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