TITLE

Reflection-mode sensing using optical microresonators

AUTHOR(S)
Koch, Barry; Yi, Yasha; Zhang, Jun-Ying; Znameroski, Stephen; Smith, Terry
PUB. DATE
November 2009
SOURCE
Applied Physics Letters;11/16/2009, Vol. 95 Issue 20, p201111
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The authors present an approach for applying optical microring resonators to sensing. The approach relies on the interaction of the resonator with a nanoparticle taggant, which can induce coupling between forward and backward propagating traveling-wave resonant modes of the device. In the conventional four-port Add/Drop filter configuration, such coupling results in significant build-up of output intensity at ports that would normally be “dark.” Because the increased intensity occurs across a wide range of device resonances, the sensor may be interrogated using broadband excitation and with a broadband detector, enabling a low-cost, robust system.
ACCESSION #
45366468

 

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