Work

Polarization-insensitive arrayed waveguide grating based on a half-etched polarization beam rotator/splitter

Year: 2025

Type: article

Abstract: In this paper, we present a new solution to the polarization independent AWG, which utilizes an innovative ridged polarization beam rotator/splitter on the 300 nm Si_3 N_4 platform. For the polarization beam rotator/splitter, we optimize the design and demonstrate an extinction ratio of 18 dB. With our polarization rotator/splitter and the multi-input AWG fabricated on the same chip, we show a good spectrometer performance for both TE and TM polarizations, with a contrast ratio around 18 dB. Additionally, a multi-section chip design is introduced to solve the fiber-to-chip coupling efficiency challenge of the ridged waveguides,

Source: Optics Continuum

DOI: 10.1364/optcon.576225

Authors: Xiheng Ai, Wei-Lun Hsu, Yang Zhang, Sylvain Veilleux, Mario Dagenais

Institution: University of Maryland, College Park

Language: English

Topic: Photonic and Optical Devices

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,372

Funder: National Aeronautics and Space Administration