Segmented design and control in contra-directional couplers for large bandwidth tunability

Lorenzo Tunesi; Mohammad Amin Mahdian; Andrea Carena; Vittorio Curri; Mahdi Nikdast; Paolo Bardella

doi:10.1117/12.3002611

8 March 2024 Segmented design and control in contra-directional couplers for large bandwidth tunability

Lorenzo Tunesi, Mohammad Amin Mahdian, Andrea Carena, Vittorio Curri, Mahdi Nikdast, Paolo Bardella

Proceedings Volume 12882, Optical Components and Materials XXI; 128820B (2024) https://doi.org/10.1117/12.3002611
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

We propose a novel design and control mechanism to achieve a widely tunable add-drop filtering element based on silicon photonic Grating-Assisted Contra-Directional Couplers. The proposed device has been simulated considering integration on the silicon photonics platform, allowing for wide deployment and cost-effective implementation as an integrated building block for different filtering/switching applications (e.g., multiplexers and demultiplexers). The segmented design and optimization of the coupler have been shown to enable a large drop bandwidth tunability while keeping a constant central wavelength, avoiding channel drifts. This add-drop element can be envisioned for flex-band wavelength-division multiplexing (WDM) applications as a component of wavelength-selective switches (WSS) or other switching devices.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Lorenzo Tunesi, Mohammad Amin Mahdian, Andrea Carena, Vittorio Curri, Mahdi Nikdast, and Paolo Bardella "Segmented design and control in contra-directional couplers for large bandwidth tunability", Proc. SPIE 12882, Optical Components and Materials XXI, 128820B (8 March 2024); https://doi.org/10.1117/12.3002611

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