Optical coupler of combining lens coupling and edge coupling for the coupling between the chip and the laser off the chip

Xu Hua Cao; Dan Dan Guo; Ming Li; Ning Hua Zhu; Wei Li

doi:10.1117/12.3006305

21 December 2023 Optical coupler of combining lens coupling and edge coupling for the coupling between the chip and the laser off the chip

Xu Hua Cao, Dan Dan Guo, Ming Li, Ning Hua Zhu, Wei Li

Author Affiliations +

Proceedings Volume 12966, AOPC 2023: AI in Optics and Photonics ; 129660Z (2023) https://doi.org/10.1117/12.3006305
Event: Applied Optics and Photonics China 2023 (AOPC2023), 2023, Beijing, China

Abstract

We report a scheme for optical coupling between the chip and the laser off the chip by means of combining lens coupling and edge coupling. Two lenses with aspherical surfaces are employed in the lens coupling, which the first lens collimates the laser source light and the second lens focus the light. And the edge coupling is accomplished by a triple-tip spot-size converter (SSC). The simulation studies of proposed method are described in detail. Simulation results show that perfect lens coupling can be generated, and the maximum coupling efficiency is 87.7%. For the edge coupling, the triple-tip SSC contains one central taper and two side waveguides that locate at both sides of the central taper equidistantly. After calculating by the 3-D finite-difference time-domain (FDTD), low coupling loss of 0.53 dB can be realized. The proposed scheme with simple structure, low cost, and high coupling efficiency has potential applications on coherent communication systems, the high-speed optical module, and integrated optical communication systems.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Xu Hua Cao, Dan Dan Guo, Ming Li, Ning Hua Zhu, and Wei Li "Optical coupler of combining lens coupling and edge coupling for the coupling between the chip and the laser off the chip", Proc. SPIE 12966, AOPC 2023: AI in Optics and Photonics , 129660Z (21 December 2023); https://doi.org/10.1117/12.3006305

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KEYWORDS

Waveguides

Finite-difference time-domain method

Integrated optics

Lenses

Silicon

Light sources

Photonic integrated circuits

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