Shallow etched chirped silicon subwavelength grating coupler designed by weak form

Ouyang Chen; Dingshan Gao

doi:10.1117/12.2689213

31 July 2023 Shallow etched chirped silicon subwavelength grating coupler designed by weak form

Ouyang Chen, Dingshan Gao

Proceedings Volume 12747, Third International Conference on Optics and Image Processing (ICOIP 2023); 1274707 (2023) https://doi.org/10.1117/12.2689213
Event: Third International Conference on Optics and Image Processing (ICOIP 2023), 2023, Hangzhou, China

Abstract

In this paper, the complex energy band of photonic crystals is calculated in weak form, and the diffraction coefficient 𝑛௜ of the subwavelength grating is obtained, and the chirped subwavelength grating is deterministically designed. For the two polarization states of TE and TM, different subwavelength grating structures are designed, and for the two polarization states, the results of simulation show that the device efficiency reaches 70%(-1.44dB) and 54%(-2.61dB), respectively, and the 3dB bandwidth is greater than 50nm.

Citation Download Citation

Ouyang Chen and Dingshan Gao "Shallow etched chirped silicon subwavelength grating coupler designed by weak form", Proc. SPIE 12747, Third International Conference on Optics and Image Processing (ICOIP 2023), 1274707 (31 July 2023); https://doi.org/10.1117/12.2689213

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