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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 25, Iss. 7 — Apr. 1, 2000
  • pp: 463–465

Wavelength-interrogated optical sensor for biochemical applications

M. Wiki and R. E. Kunz  »View Author Affiliations


Optics Letters, Vol. 25, Issue 7, pp. 463-465 (2000)
http://dx.doi.org/10.1364/OL.25.000463


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Abstract

A novel miniature integrated-optical sensor for versatile multichannel applications is described. Wavelength-modulation techniques using laser diodes (vertical-cavity surface-emitting lasers) are used to interrogate multiple-waveguide sensing regions on a single integrated-optical chip for accurate measurement of effective refractive-index changes at a high data rate. With the experimental miniature sensor system, a resolution of ΔNPP = 10-7 (short term, peak to peak) of the effective refractive index was demonstrated. In terms of surface-mass coverage, this resolution corresponds to ΔΓPP = 130 fg/mm2.

© 2000 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(130.2790) Integrated optics : Guided waves
(130.6010) Integrated optics : Sensors
(130.6750) Integrated optics : Systems
(140.3600) Lasers and laser optics : Lasers, tunable

Citation
M. Wiki and R. E. Kunz, "Wavelength-interrogated optical sensor for biochemical applications," Opt. Lett. 25, 463-465 (2000)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-25-7-463

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