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Proceedings Paper

Silicon nanomembrane based photonic crystal waveguide true-time-delay lines on a glass substrate
Author(s): Harish Subbaraman; Xiaochuan Xu; Che-Yun Lin; Amir Hosseini; Ray T. Chen
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Paper 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.

Paper Details

Date Published: 14 March 2013
PDF: 6 pages
Proc. SPIE 8629, Silicon Photonics VIII, 86291E (14 March 2013); doi: 10.1117/12.2004731
Show Author Affiliations
Harish Subbaraman, Omega Optics, Inc. (United States)
Xiaochuan Xu, The Univ. of Texas at Austin (United States)
Che-Yun Lin, The Univ. of Texas at Austin (United States)
Amir Hosseini, Omega Optics, Inc. (United States)
Ray T. Chen, The Univ. of Texas at Austin (United States)


Published in SPIE Proceedings Vol. 8629:
Silicon Photonics VIII
Joel Kubby; Graham T. Reed, Editor(s)

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