Demonstration of high-Q TE-TM photonic crystal nanobeam cavities
Murray W. McCutcheon, Parag B. Deotare, Yinan Zhang, Marko Loncar
TL;DR
This paper reports the experimental realization of high-Q dual-polarized TE-TM photonic crystal nanobeam cavities in silicon, demonstrating significant quality factors and strong fiber transmission modulation for both polarizations.
Contribution
It introduces the first demonstration of high-Q dual-polarized TE-TM photonic crystal nanobeam cavities with measured Q-factors exceeding 10^4 in silicon.
Findings
Q-factors > 10^4 for TE and TM modes
Large fiber transmission drops at TM resonances
Successful fabrication of free-standing nanobeams
Abstract
We experimentally demonstrate high Quality factor dual-polarized TE-TM photonic crystal nanobeam cavities. The free-standing nanobeams are fabricated in a 500 nm thick silicon layer, and are probed using both tapered optical fiber and free-space resonant scattering set-ups. We measure Q-factors greater than 10^4 for both TM and TE modes, and observe large fiber transmission drops (0.3 -- 0.4) at the TM mode resonances.
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Taxonomy
TopicsPhotonic and Optical Devices · Photonic Crystals and Applications · Optical Coatings and Gratings