Silicon photonic subwavelength grating based integrated optical delay lines

Ashrafi, Reza and Wang, Junjia and Glesk, Ivan and Chen, Lawrence R.; (2015) Silicon photonic subwavelength grating based integrated optical delay lines. In: 2015 IEEE 12th International Conference on Group IV Photonics (GFP). IEEE Photonics Society, CAN, pp. 127-128. ISBN 978-1-4799-8254-7

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    Abstract

    We demonstrate a novel integrated optical delay line approach based on silicon subwavelength gratings (SWGs). By 30% change in duty-cycle of SWG waveguides with a same length of 8mm to control their group index, up to ~30ps time-delay was achieved.