Microsphere whispering gallery mode coupler based on an S-bend waveguide structure

Hsin-Tung Chiang; Gi-Zen Lin; Chao-Yi Tai; Chia-Jong Liu

doi:10.1117/12.708016

8 September 2006 Microsphere whispering gallery mode coupler based on an S-bend waveguide structure

Hsin-Tung Chiang, Gi-Zen Lin, Chao-Yi Tai, Chia-Jong Liu

Proceedings Volume 6343, Photonics North 2006; 63433I (2006) https://doi.org/10.1117/12.708016
Event: Photonics North 2006, 2006, Quebec City, Canada

Abstract

Resonant cavities are key components in photonic circuits which provide feedback, wavelength selectivity and energy storage. Microspheres^[1], in particular, support ultrahigh-Q whispering gallery modes (WGMs) that may lead to large delays and enhanced optical nonlinearity within several tens of microns length scale. Most of the demonstrated devices to date utilize a tapered fiber to excite the WGMs, however this coupling architecture not only lacks of rigid stability but inhibits dense integration to form more sophisticated planar lightwave circuits (PLCs). Here we report an alternative approach based on evanescent coupling between the microsphere and a S-bend waveguide structure. This approach provides better mechanical stability and is capable for on-chip integration.

Citation Download Citation

Hsin-Tung Chiang, Gi-Zen Lin, Chao-Yi Tai, and Chia-Jong Liu "Microsphere whispering gallery mode coupler based on an S-bend waveguide structure", Proc. SPIE 6343, Photonics North 2006, 63433I (8 September 2006); https://doi.org/10.1117/12.708016

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