| Issue |
EPJ Web Conf.
Volume 255, 2021
EOS Annual Meeting (EOSAM 2021)
|
|
|---|---|---|
| Article Number | 01003 | |
| Number of page(s) | 3 | |
| Section | Topical Meeting (TOM) 1- Silicon Photonics and Guided-Wave Optics | |
| DOI | https://doi.org/10.1051/epjconf/202125501003 | |
| Published online | 18 November 2021 | |
https://doi.org/10.1051/epjconf/202125501003
SOI multimode waveguide bend with radially bridged SWGs for broadband (de)multiplexing -INVITED
Carleton University, Department of Electronics, 1125 Colonel By Dr. Ottawa, Canada
* Kevan MacKay: kevanmackay@cmail.carleton.ca
Published online: 18 November 2021
A novel broadband multimode waveguide bend is proposed that supports the propagation of multiple TE modes on a silicon-on-insulator platform. The gradient curvature bend utilizes trapezoidal subwavelength grating (SWG) segments, connected by adiabatically tapered radial strips to achieve efficient mode (de)multiplexing. The inclusion of the radial strips offers an extra degree of design freedom, allowing the realization of a multimode bend with only one single full etch step. The access waveguide has a width of 2.075 μm with an effective radius of 10 μm. Propagation loss for all modes remains below 2.96 dB, and intermodal crosstalk has a maximum of -19 dB across a broad bandwidth of 100 nm, centred at 1550 nm. This work presents an excellent design choice for broadband mode-division multiplexing operations.
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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