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

Ultraprecise measurement of resonance shift for sensing applications

Not Accessible

Your library or personal account may give you access

Abstract

Resonator-based optical sensors detect the change of refractive index in the environment by measuring the resonance shift. The sensitivity of such sensors is determined by how precise one can locate the resonant wavelength, which is thought to be limited by the bandwidth and the quality factor of the resonator. Here we show that, with a tunable resonator, one can determine the resonant wavelength with ultrahigh precision. Using a silicon microring resonator with an embedded p-i-n junction for electro-optic tuning, whose quality factor is only 14,000, we measured the resonant wavelength with a resolution of 0.06 pm, which corresponds to an index sensitivity of 107. This resonance measurement for sensing purposes can be done using a fixed-wavelength laser.

© 2012 Optical Society of America

Full Article  |  PDF Article
More Like This
Experimental demonstration of microring quadrature phase-shift keying modulators

Po Dong, Chongjin Xie, Long Chen, Nicolas K. Fontaine, and Young-kai Chen
Opt. Lett. 37(7) 1178-1180 (2012)

Trimming of high-Q-factor silicon ring resonators by electron beam bleaching

Stefan Prorok, Alexander Yu. Petrov, Manfred Eich, Jingdong Luo, and Alex K.-Y. Jen
Opt. Lett. 37(15) 3114-3116 (2012)

Fiber ring laser for intracavity sensing using a whispering-gallery-mode resonator

G. Nunzi Conti, S. Berneschi, A. Barucci, F. Cosi, S. Soria, and C. Trono
Opt. Lett. 37(13) 2697-2699 (2012)

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 (3)

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

Equations (3)

You do not have subscription access to this journal. Equations 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