Silicon nanomembrane based photonic crystal waveguide true-time-delay lines on a glass substrate

Harish Subbaraman; Xiaochuan Xu; Che-Yun Lin; Amir Hosseini; Ray T. Chen

doi:10.1117/12.2004731

14 March 2013 Silicon nanomembrane based photonic crystal waveguide true-time-delay lines on a glass substrate

Harish Subbaraman, Xiaochuan Xu, Che-Yun Lin, Amir Hosseini, Ray T. Chen

Proceedings Volume 8629, Silicon Photonics VIII; 86291E (2013) https://doi.org/10.1117/12.2004731
Event: SPIE OPTO, 2013, San Francisco, California, United States

Abstract

We demonstrate photonic crystal waveguide true-time-delay lines fabricated on a large area (>2cm × 2cm) silicon nanomembrane transferred onto a glass substrate. The photonic crystal waveguides are designed to provide large time delay values within a short length. 17.1 μm × 10 μm subwavelength grating (SWG) couplers are employed in order to enable efficient light coupling from and to a fiber. Photonic crystal tapers are implemented at the stripphotonic crystal waveguide interfaces to minimize loss and provide larger time delay values. A large group index of ~28.5 is calculated from the measurement data, thus indicating achievability of time delay larger than 58ps per millimeter length of the delay line within a tuning range of 20nm.

Citation Download Citation

Harish Subbaraman, Xiaochuan Xu, Che-Yun Lin, Amir Hosseini, and Ray T. Chen "Silicon nanomembrane based photonic crystal waveguide true-time-delay lines on a glass substrate", Proc. SPIE 8629, Silicon Photonics VIII, 86291E (14 March 2013); https://doi.org/10.1117/12.2004731

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