Ultra-compact and broadband orthogonal coupler between strip and slot silicon waveguides

Fei Li; Xiaofeng Hu; Jiayang Wu; Linjie Zhou; Yikai Su

doi:10.1117/12.904221

29 November 2011 Ultra-compact and broadband orthogonal coupler between strip and slot silicon waveguides

Fei Li, Xiaofeng Hu, Jiayang Wu, Linjie Zhou, Yikai Su

Proceedings Volume 8307, Passive Components and Fiber-Based Devices VIII; 83070B (2011) https://doi.org/10.1117/12.904221
Event: SPIE/OSA/IEEE Asia Communications and Photonics, 2011, Shanghai, China

Abstract

We propose an ultra-compact and broadband orthogonal coupler between a strip waveguide and a slot waveguide. Numerical simulations show that a 700-nm wide (full width at half maximum) coupling spectrum can be theoretically achieved and a coupling efficiency as high as 73% around 1500-nm wavelength can be obtained. The coupling length is only about 475 nm which makes the coupler very compact. This configuration does not include a tapering section and has a high tolerance to the waveguide height, alleviating the stringent fabrication requirements.

Citation Download Citation

Fei Li, Xiaofeng Hu, Jiayang Wu, Linjie Zhou, and Yikai Su "Ultra-compact and broadband orthogonal coupler between strip and slot silicon waveguides", Proc. SPIE 8307, Passive Components and Fiber-Based Devices VIII, 83070B (29 November 2011); https://doi.org/10.1117/12.904221

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