Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Ultracompact biochemical sensor built with two-dimensional photonic crystal microcavity

Not Accessible

Your library or personal account may give you access

Abstract

We report an experimental demonstration of an ultracompact biochemical sensor based on a two-dimensional photonic crystal microcavity. The microcavity, fabricated on a silicon-on-insulator substrate, is designed to have a resonant wavelength (λ) near 1.5 µm. The transmission spectrum of the sensor is measured with different ambient refractive indices ranging from n=1.0 to n=1.5. From observation of the shift in resonant wavelength, a change in ambient refractive index of Δn=0.002 is readily apparent. The correspondence between absolute refractive index and resonant wavelength agrees with numerical calculation to within 4% accuracy. The evaporation of water in a 5% glycerol mixture is also used to demonstrate the capability for in situ time-resolved sensing.

© 2004 Optical Society of America

Full Article  |  PDF Article
More Like This
Direct measurement of the quality factor in a two-dimensional photonic-crystal microcavity

S. Y. Lin, Edmond Chow, S. G. Johnson, and J. D. Joannopoulos
Opt. Lett. 26(23) 1903-1905 (2001)

Low-loss, wide-angle Y splitter at ∼1.6-µm wavelengths built with a two-dimensional photonic crystal

S. Y. Lin, E. Chow, J. Bur, S. G. Johnson, and J. D. Joannopoulos
Opt. Lett. 27(16) 1400-1402 (2002)

Nanofluidic tuning of photonic crystal circuits

David Erickson, Troy Rockwood, Teresa Emery, Axel Scherer, and Demetri Psaltis
Opt. Lett. 31(1) 59-61 (2006)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (4)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved