Journal article
Low-Loss and Broadband 2 × 2 Polarization Beam Splitter Based on Silicon Nitride Platform
S Gao, Y Wang, K Wang, E Skafidas
IEEE Photonics Technology Letters | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC | Published : 2016
Abstract
A low-loss and broadband 2 × 2 Mach-Zehnder interferometer-based polarization beam splitter (PBS) is proposed and experimentally demonstrated on the silicon nitride platform. The device is realized by using a 27.7-μm-long phase control section, which consists of two arms with different widths to separate TE and TM polarized lights by providing different phase changes. Furthermore, a compact asymmetric 3-dB directional coupler with a parallel-coupling length of only 1.2 μm is proposed to support polarization independent operation and reduce the device length. The measurement results show that the proposed PBS has a minimum insertion loss of 0.13 dB for the TE polarization and 0.34 dB for the ..
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Awarded by Australian Research Council
Funding Acknowledgements
This work was supported in part by The University of Melbourne through the Early Career Researcher Project under Grant 602702 and in part by the Australian Research Council through the Discovery Early Career Researcher Award Program under Grant DE150100924. This work was performed in part at the Melbourne Centre for Nanofabrication (MCN) in the Victorian Node of the Australian National Fabrication Facility (ANFF). (Corresponding author: Shitao Gao.)