Shape optimization of asymmetric Y-junction for mode multiplexing in proton-exchange lithium niobate waveguides

Xiuping Xie; Takashi Saida; Jie Huang; Martin M. Fejer

doi:10.1117/12.593475

31 March 2005 Shape optimization of asymmetric Y-junction for mode multiplexing in proton-exchange lithium niobate waveguides

Xiuping Xie, Takashi Saida, Jie Huang, Martin M. Fejer

Author Affiliations +

Proceedings Volume 5728, Integrated Optics: Devices, Materials, and Technologies IX; (2005) https://doi.org/10.1117/12.593475
Event: Integrated Optoelectronic Devices 2005, 2005, San Jose, California, United States

Abstract

We introduce and demonstrate a new design for mode multiplexing in proton-exchange lithium niobate waveguides using asymmetric Y-junctions. The coupling between the lowest two modes in the device is suppressed by modifying the Y-junction shape. Without increasing the device length, the mode contrast is enhanced by >3.4dB compared to conventional designs. The new design improves the performance of an important functional block in integrated optics.

Citation Download Citation

Xiuping Xie, Takashi Saida, Jie Huang, and Martin M. Fejer "Shape optimization of asymmetric Y-junction for mode multiplexing in proton-exchange lithium niobate waveguides", Proc. SPIE 5728, Integrated Optics: Devices, Materials, and Technologies IX, (31 March 2005); https://doi.org/10.1117/12.593475

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