High performance TM-pass polarizer via subwavelength grating bandgap engineering
2023 IEEE Silicon Photonics Conference (SiPhotonics)（2023）
Abstract
Silicon photonics systems exhibit a strong birefringence which makes polarization management critical. Here we demonstrate, with full 3D-FDTD simulations, a low-loss and high-extinction ratio TM-pass polarizer based on tilted subwavelength gratings that reflects the TE0 mode into the TE1 mode, with a 150 nm bandwidth,
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Key words
Silicon photonics, TM-pass polarizers, subwavelength grating metamaterials, Bragg structures
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