Abstract

A compact and broadband mode (de)multiplexer utilizing the asymmetrical directional coupling between a hybrid plasmonic waveguide and a silicon nanowire waveguide is proposed. The coupling length is 13.6 μm, which is the shortest in ${\mathrm{TE}}_0$ and ${\mathrm{TE}}_1$ mode multiplexers reported, to the best of our knowledge. It shows a high mode conversion efficiency of 99.2% with excess loss of only 0.35 dB at 1550 nm. The mode multiplexing circuit exhibits a low crosstalk of less than $-17\mathrm{dB}$ over a large bandwidth of 100 nm.

© 2014 Optical Society of America

Ultracompact and broadband asymmetric directional-coupler-based mode division (de)multiplexer

Kolsoom Mehrabi and Abbas Zarifkar
J. Opt. Soc. Am. B 36(7) 1907-1913 (2019)

Compact and broadband data exchange for mode-division-multiplexed networks

Kolsoom Mehrabi and Abbas Zarifkar
Appl. Opt. 58(16) 4352-4357 (2019)

Compact and low-crosstalk mode (de)multiplexer using a triple plasmonic-dielectric waveguide-based directional coupler

Weifeng Jiang, Fangyuan Cheng, Ji Xu, and Hongdan Wan
J. Opt. Soc. Am. B 35(10) 2532-2540 (2018)

Ultracompact and ultrabroadband mode division multiplexer based on an Au nanocube array assisted directional coupler

Kolsoom Mehrabi and Abbas Zarifkar
Appl. Opt. 59(5) 1286-1292 (2020)

On-chip two-mode division multiplexing using tapered directional coupler-based mode multiplexer and demultiplexer

Yunhong Ding, Jing Xu, Francesco Da Ros, Bo Huang, Haiyan Ou, and Christophe Peucheret
Opt. Express 21(8) 10376-10382 (2013)