On-chip mode division (de)multiplexer for multi-band operation

被引:19
作者
Wang, Qianshi [1 ]
He, Yu [1 ]
Wang, Hongwei [1 ]
Wang, Zhen [1 ]
Shen, Jian [1 ]
Zhang, Yong [1 ]
Su, Yikai [1 ]
机构
[1] Shanghai Jiao Tong Univ, Dept Elect Engn, State Key Lab Adv Opt Commun Syst & Networks, Shanghai 200240, Peoples R China
来源
OPTICS EXPRESS | 2022年 / 30卷 / 13期
基金
中国国家自然科学基金;
关键词
SILICON PHOTONIC RECEIVER; ASYMMETRIC Y-JUNCTIONS; BROAD-BAND; WAVE-GUIDES; COMPACT MODE; MULTIPLEXER; MULTI/DEMULTIPLEXER; TRANSMISSION; COUPLERS;
D O I
10.1364/OE.461551
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We propose an on-chip mode division (de)multiplexer based on asymmetric directional couplers (ADCs) for multi-band operation. In mode-coupling process, the minimum coupling length is wavelength-dependent. The longer the wavelength is, the shorter the minimum coupling length is. A light of longer wavelength can be coupled back and forth multiple times with a total coupling length which equals to the minimum coupling length of a shorter wavelength light, thus realizing multi-band transmission at different wavelengths. As a proof-of-concept experiment, a four-mode (de)multiplexer for joint operation in the C- and O-Bands is designed and experimentally demonstrated. For the four modes (TE0, TE1, TE2 and TE3), the measured insertion losses (ILs) and crosstalk (CT) of the (de)multiplexer are < 4.7 dB and < -10.1 dB respectively from 1290 nm to 1360 nm, and they are < 3.5 dB and < -11.8 dB respectively from 1510 nm to 1580 nm. (c) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
引用
收藏
页码:22779 / 22787
页数:9
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