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Optical biosensor with dispersion compensation

delete2005-05-15
delete7
PRE
AI
W
W. Zong
C
Carsten Thirstrup
M
Mads Hoy Sørensen
H
Henrik C. Pedersen
DOI:10.1364/OL.30.001138delete
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Abstract

Abstract

En 中文
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. (c) 2005 Optical Society of America.
Keywords:
SURFACE-PLASMON RESONANCE
MIRROR

Journal

Optics Letters cover
Optics Letters
IF:
3.3
Papers:
4.0W
Citations:
7.6W

Organization

No organization information available