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Polymer Waveguide Couplers for Fluorite Microresonators

Anatoliy A. Savchenkov, Hari Mahalingam,Vladimir S. Ilchenko,Satsuki Takahashi,Andrey B. Matsko,William H. Steier,Lute Maleki

IEEE photonics technology letters（2017）

Cited 13|Views27
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Abstract
We report on the development of a planar evanescent-field coupler for calcium fluoride (CaF2) whispering gallery mode resonators using polymer rib waveguides and demonstrate 80% coupling efficiency with resonators characterized with the loaded quality factors exceeding 108. The coupling efficiency is limited due to emission of light from the resonator mode to the unconfined modes of the waveguide.
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Key words
Integrated optics circuits,optical resonators,polymer waveguides,Q-factor,whispering gallery mode (WGM) resonators
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