Automated design and optimization scheme of optical antenna for silicon photonic integrated circuit

Fusheng Zhao; Bin Wang; Shuo Wang; Tianfei Hou

doi:10.1117/12.2542493

12 March 2020 Automated design and optimization scheme of optical antenna for silicon photonic integrated circuit

Fusheng Zhao, Bin Wang, Shuo Wang, Tianfei Hou

Proceedings Volume 11440, 2019 International Conference on Optical Instruments and Technology: Micro/Nano Photonics: Materials and Devices; 1144008 (2020) https://doi.org/10.1117/12.2542493
Event: 2019 International Conference on Optical Instruments and Technology, 2019, Beijing, China

Abstract

Optical antennas are essential components for integrated photonic circuits (PICs) as they allow the effective coupling of light into/from free space with large optical aperture and therefore small divergence angle. Such a function is especially vital in sensing applications such as LIDAR and Doppler velocimetry where the interaction with free space objects is required. However, the design of a linear grating optical antenna is not a trivial task, as the radiation intensity and angle need to be optimized along the antenna length to achieve the desired radiation pattern. In this work, we proposed and realized an automated design scheme for silicon PIC antennas. Utilizing such a scheme, an optical antenna array with 128 μm by 500 μm optical aperture has been designed and fabricated with 0.18 μm fabrication technology. The antenna has been characterized for its divergence angle and radiation pattern. The obtained data match well with design parameters, showing the viability of such an automated design scheme.

Citation Download Citation

Fusheng Zhao, Bin Wang, Shuo Wang, and Tianfei Hou "Automated design and optimization scheme of optical antenna for silicon photonic integrated circuit", Proc. SPIE 11440, 2019 International Conference on Optical Instruments and Technology: Micro/Nano Photonics: Materials and Devices, 1144008 (12 March 2020); https://doi.org/10.1117/12.2542493

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