Proposal and analysis of a double-tip coupler for efficient coupling fiber to slot and strip waveguides

Qingzhong Huang; Weihua Han; Zhongchao Fan; Fuhua Yang; Yan Liu; Xi Xiao; Yu Zhu; Yuntao Li; Zhiyong Li; Yude Yu; Jinzhong Yu

doi:10.1117/12.843412

26 October 2009 Proposal and analysis of a double-tip coupler for efficient coupling fiber to slot and strip waveguides

Qingzhong Huang, Weihua Han, Zhongchao Fan, Fuhua Yang, Yan Liu, Xi Xiao, Yu Zhu, Yuntao Li, Zhiyong Li, Yude Yu, Jinzhong Yu

Author Affiliations +

Proceedings Volume 7516, Photonics and Optoelectronics Meetings (POEM) 2009: Optoelectronic Devices and Integration; 75160M (2009) https://doi.org/10.1117/12.843412
Event: Photonics and Optoelectronics Meetings 2009, 2009, Wuhan, China

Abstract

High efficiency coupling from fiber to slot and strip waveguides using a double-tip coupler is presented. The double tips are inverse tapered, while their distance is decreased. The coupling efficiency reaches 90.9% with a taper length of only 30μm for coupling fiber to slot waveguides. With a mode transformer, the slot waveguide mode can be converted to strip waveguide mode with an efficiency of 99.3% in a length of 15μm. The impact of several parameters, such as distance between tips, taper length, and tip-end width, are simulated and optimized to improve the coupling efficiency.

Citation Download Citation

Qingzhong Huang, Weihua Han, Zhongchao Fan, Fuhua Yang, Yan Liu, Xi Xiao, Yu Zhu, Yuntao Li, Zhiyong Li, Yude Yu, and Jinzhong Yu "Proposal and analysis of a double-tip coupler for efficient coupling fiber to slot and strip waveguides", Proc. SPIE 7516, Photonics and Optoelectronics Meetings (POEM) 2009: Optoelectronic Devices and Integration, 75160M (26 October 2009); https://doi.org/10.1117/12.843412

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