8 March 2014 Chirped photonic crystal mode converters for broad-band coupling with highly dispersive photonic crystal microring resonators
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Proceedings Volume 8990, Silicon Photonics IX; 89901E (2014) https://doi.org/10.1117/12.2038741
Event: SPIE OPTO, 2014, San Francisco, California, United States
Abstract
We demonstrate evanescent coupling between a photonic crystal (PhC) waveguide and a PhC embedded microring resonator on the silicon-on-insulator platform. The mode converter comprises 6 linearly chirped air holes that adiabatically couple the light between the silicon waveguide mode and the PhC mode. Three-dimensional finitedifference time-domain simulations reveal a coupling bandwidth of >100nm. From our experiment, the optical spectra show a photonic bandgap located below ~1590nm. At the resonances in the slow-light regime, a loaded quality factor as high as ~2500 was measured and a group index of ~16 in the PhC embedded microring resonator was estimated from the non-uniform free spectral ranges.
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Stanley M. Lo, Stanley M. Lo, Jonathan Y. Lee, Jonathan Y. Lee, Sharon M. Weiss, Sharon M. Weiss, Philippe M. Fauchet, Philippe M. Fauchet, } "Chirped photonic crystal mode converters for broad-band coupling with highly dispersive photonic crystal microring resonators", Proc. SPIE 8990, Silicon Photonics IX, 89901E (8 March 2014); doi: 10.1117/12.2038741; https://doi.org/10.1117/12.2038741
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