Abstract

Multimode power splitters are the fundamental building blocks in mode division multiplexing systems. In this paper, we propose a low-loss and compact, dual-mode, 3-dB power splitter for the two lowest TE modes combining three different structures, including a directional coupler, a multimode interferometer, and a Y-junction. The coupling length of the proposed device is only 7.2 µm. For both ${{\rm TE}_0}$ and ${{\rm TE}_1}$ modes, the numerical simulation shows that the insertion loss is only less than 0.1 dB and crosstalk is less than ${-}{20}\;{\rm dB}$ at the wavelength range of 1520–1580 nm. The working bandwidth can cover the entire C-band. It offers a potential solution for a 3-dB power splitter of the two lowest TE modes.

© 2024 Optica Publishing Group

Broadband and low crosstalk silicon on-chip mode converter and demultiplexer for mode division multiplexing

Devendra Chack, Shamsul Hassan, and Mohd Qasim
Appl. Opt. 59(12) 3652-3659 (2020)

Broadband dual-mode 3 dB power splitter using bricked subwavelength gratings

Mengjia Lu, Chunyu Deng, Yu Sun, Dongyu Wang, Pengcheng Liu, Dongdong Lin, Wei Cheng, Shangqing Shi, Tong Lin, Guohua Hu, Binfeng Yun, and Yiping Cui
J. Opt. Soc. Am. B 40(3) 502-508 (2023)

Broadband dual-mode 2 × 2 3 dB multimode interference couplers with a shallowly etched multimode section

Chaochao Ye, Ming Zhang, Yaocheng Shi, and Daoxin Dai
Appl. Opt. 59(24) 7308-7312 (2020)

Low loss and ultra-broadband design of an integrated 3 dB power splitter centered at 2 µm

Zhiming Liu, Yue Dong, Yin Xu, Bo Zhang, and Yi Ni
Appl. Opt. 63(3) 662-667 (2024)

Inverse design of asymmetric Y-junctions for ultra-compact, broadband, and low crosstalk mode (de)multiplexers

Qi Wang, Wenkang Wang, Ronglei Sun, Ping Yu, Huiye Qiu, and Rui Cheng
Opt. Express 31(22) 37284-37301 (2023)