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Subwavelength grating devices in SOI

Wang, Junjia and Asharfi, Reza and Glesk, Ivan and Chen, Lawrence R. (2015) Subwavelength grating devices in SOI. In: Proceedings of International Conference on Optical Communications and Networks 2015. IEEE, pp. 1-3. ISBN 978-1-4673-7373-9

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Abstract

We demonstrate subwavelength grating devices in silicon-on-insulator including Bragg gratings, racetrack resonators, and optical delay lines. The Bragg grating filter has a 3 dB bandwidth of 0.5 nm and a reflectivity of 90%; the racetrack resonator has a 3 dB bandwidth of 1 nm, a free spectral range of 4.6 nm, and an extinction ratio as high as 33 dB; the optical delay lines achieve ~30ps time-delay with 30% change in duty-cycle.