24 October 2014 Theoretical investigation of polarization-dependent devices based on the critical guiding condition of SOI waveguide
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Abstract
With the increasing demand for information, integrated silicon photonics technology has been highly valued. Among them, silicon on insulator (SOI) has advantages of low cost, process maturity, and IC technology compatible, making it to be one of the most competitive integrated optoelectronic platforms. However, due to its highly polarization-dependent performance, polarization-selective devices are essential on SOI platform. In this paper, we analyze the critical guiding condition of SOI waveguide as well as the hybrid plasmonic waveguide (HPW). Based on the different critical guiding condition for both polarizations, we propose several polarization-selective devices on SOI platform, including polarizer, polarization beam splitter (PBS) and polarization rotator. In this paper, an ultracompact and broadband TE-pass polarizer based on HPW is proposed. In addition, an asymmetrical coupling based polarization beam splitter is designed. Simulation results show that the designed devices have excellent optical properties, and the sizes of the devices achieve a great breakthrough.
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Zhoufeng Ying, Zhoufeng Ying, Guanghui Wang, Guanghui Wang, Xuping Zhang, Xuping Zhang, Ho-pui Ho, Ho-pui Ho, "Theoretical investigation of polarization-dependent devices based on the critical guiding condition of SOI waveguide", Proc. SPIE 9270, Optoelectronic Devices and Integration V, 927011 (24 October 2014); doi: 10.1117/12.2075130; https://doi.org/10.1117/12.2075130
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