Polarization-insensitive silicon oxynitride Mach-Zehnder interferometers for LAN-WDM

Haoran Zhang; Shuxiao Wang; Wei Wang; Xu Chen; Yan Cai

doi:10.1117/12.3005837

24 November 2023 Polarization-insensitive silicon oxynitride Mach-Zehnder interferometers for LAN-WDM

Haoran Zhang, Shuxiao Wang, Wei Wang, Xu Chen, Yan Cai

Proceedings Volume 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023); 129351A (2023) https://doi.org/10.1117/12.3005837
Event: Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 2023, Xi’an, China

Abstract

A polarization-insensitive four-channel wavelength-division multiplexing (WDM) (de)multiplexer based on Mach-Zehnder interferometers is proposed and demonstrated. Polarization insensitivity can be achieved by utilizing the square waveguides and bend directional couplers (bend DCs) based on silicon oxynitride (SiON) waveguides. The WDM (de)multiplexer has an 800GHz spacing for LAN-WDM application. Two stages of cascaded MZIs are utilized to achieve a four-channel spectral response. For the realized WDM (de)multiplexer with Gaussian-like passbands, the polarization-dependent losses (PDL) are less than 0.7dB for all 1-dB passbands. The insertion losses are <~ 3dB and the crosstalk is <~ -12dB for both TE and TM polarizations at channel central wavelengths.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Haoran Zhang, Shuxiao Wang, Wei Wang, Xu Chen, and Yan Cai "Polarization-insensitive silicon oxynitride Mach-Zehnder interferometers for LAN-WDM", Proc. SPIE 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 129351A (24 November 2023); https://doi.org/10.1117/12.3005837

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KEYWORDS

Wavelength division multiplexing

Polarization

Waveguides

Silicon

Crosstalk

Mach-Zehnder interferometers

Silicon photonics

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