Novel design of low-loss S-shaped bend in Ti/Mg:LiNbO3 waveguide

Jiunn-Chyi Lee; Chung-Cheng Yang; Yean-Fen Wu

doi:10.1117/12.251996

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20 September 1996 Novel design of low-loss S-shaped bend in Ti/Mg:LiNbO₃ waveguide

Jiunn-Chyi Lee, Chung-Cheng Yang, Yean-Fen Wu

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Proceedings Volume 2893, Fiber Optic Components and Optical Communication; (1996) https://doi.org/10.1117/12.251996
Event: Photonics China '96, 1996, Beijing, China

Abstract

The purpose of this paper is to design a high efficiency waveguide, and it makes use of the mature theorem of channel diffused LiNbO₃ waveguide and a modified S-shaped structure. The advantage of the features offer a high coupling efficiency with fibers, larger lateral displacement and low transition loss. We have buried waveguide through indiffusion of a MgO layer for reducing the coupling loss. Further the concept of microprism-like structure is not only applied at the junction of the straight and bent waveguides, but also that is placed in the bent section. Some numerical results confirm that the design provides the better performance in the transition and bending losses.

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Jiunn-Chyi Lee, Chung-Cheng Yang, and Yean-Fen Wu "Novel design of low-loss S-shaped bend in Ti/Mg:LiNbO₃ waveguide", Proc. SPIE 2893, Fiber Optic Components and Optical Communication, (20 September 1996); https://doi.org/10.1117/12.251996

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