Broadband thermo-optic switch based on a W2 photonic crystal waveguide

Kaiyu Cui; Xue Feng; Yidong Huang; Qiang Zhao; Zhilei Huang; Wei Zhang

doi:10.1117/12.2004138

27 February 2013 Broadband thermo-optic switch based on a W2 photonic crystal waveguide

Kaiyu Cui, Xue Feng, Yidong Huang, Qiang Zhao, Zhilei Huang, Wei Zhang

Proceedings Volume 8630, Optoelectronic Interconnects XIII; 863018 (2013) https://doi.org/10.1117/12.2004138
Event: SPIE OPTO, 2013, San Francisco, California, United States

Abstract

Broadband thermo-optic switch based on an ultra-compact W2 photonic crystal waveguide (PCW) is demonstrated with an integrated titanium/aluminum microheater on its surface. The operating principle relies on shifting a transmission-dip caused by the enhanced coupling between the defect modes in W2 PCW. As a result, broadband switching functionality with larger extinction ratio can be attained. Moreover, microheaters with different width are evaluated by the power consumptions and heating transfer efficiency, and an optimized slab microheater is utilized. Finally, switching functionality with bandwidth up to 24 nm (1557~1581 nm) is measured by the PCW with footprint of only 8μm×17.6 μm, while the extinction ratio is in excess of 15 dB over the entire bandwidth. What’s more, the switching speed is obtained by the measurement of alternating current modulation. Response time for this thermo-optic switch is 11.0±3.0 μs for rise time and 40.3±5.3 μs for fall time, respectively.

Citation Download Citation

Kaiyu Cui, Xue Feng, Yidong Huang, Qiang Zhao, Zhilei Huang, and Wei Zhang "Broadband thermo-optic switch based on a W2 photonic crystal waveguide", Proc. SPIE 8630, Optoelectronic Interconnects XIII, 863018 (27 February 2013); https://doi.org/10.1117/12.2004138

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