Paper
5 November 2020 Engineering silicon waveguide nonlinear loss for integrated microwave photonics links
Jinghan Pan, Meicheng Fu, Junli Qi, Guocheng Huang, Wenjun Yi, Xiaochun Wang, Xiujian Li
Author Affiliations +
Abstract
As a fundamental components for the integrated microwave photonic links, the nonlinear loss of the Silicon waveguides will significantly affect the links’ performance. We study the effects of the effective mode area (Aeff), two-photon absorption (TPA), free-carriers absorption (FCA), and linear propagation loss on the insertion loss in silicon waveguides. According to our simulations, the results show that it should be an efficient way to reduce the insertion loss of the silicon by combining the large mode area, small linear propagation loss and carriers sweep out techniques. And, we can also know that when the nonlinear loss will dominate with the coupled power becoming larger. Thus, the results can provide guidances on the gain, loss, and linear dynamic range of analog photonics links based on silicon waveguide.
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Jinghan Pan, Meicheng Fu, Junli Qi, Guocheng Huang, Wenjun Yi, Xiaochun Wang, and Xiujian Li "Engineering silicon waveguide nonlinear loss for integrated microwave photonics links", Proc. SPIE 11564, AOPC 2020: Optoelectronics and Nanophotonics; and Quantum Information Technology, 115640C (5 November 2020); https://doi.org/10.1117/12.2580179
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KEYWORDS
Waveguides

Silicon

Microwave photonics

Signal processing

Photonics

Signal attenuation

Nonlinear optics

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