A Design Guideline for Mode (DE) Multiplexer Based on Integrated Tapered Asymmetric Directional Coupler

被引：32
|
作者：
Shu, Haowen [1 ]
Shen, Bitao [1 ]
Deng, Qingzhong [1 ]
Jin, Ming [1 ]
Wang, Xingjun [2 ]
Zhou, Zhiping [2 ]
机构：
[1] Peking Univ, Sch Elect Engn & Comp Sci, Dept Elect, State Key Lab Adv Opt Commun Syst & Networks, Beijing 100871, Peoples R China
[2] Peking Univ, Frontiers Sci Ctr Nanooptoelect, Beijing 100871, Peoples R China
来源：
IEEE PHOTONICS JOURNAL | 2019年 / 11卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Couplings; Multiplexing; Optical waveguides; Fabrication; Geometry; Directional couplers; Crosstalk; Silicon photonics; Multiplexing equipment;
D O I：
10.1109/JPHOT.2019.2941742
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A tapered asymmetric directional coupler is considered as a promising structure for high tolerance and efficient on-chip mode (de)multiplexers. However, the optimum geometry parameters selection still remains empirical without specific numerical guidance. Here, an in-depth analysis has been carried out based on coupling mode theory. A theoretical model is built aiming to combine the consideration of device efficiency, mode crosstalk and fabrication tolerance. According to that, mode (de)multiplexers (TE0-TE1, TE0 -TE2, TM0 TM1, TM0 -TM2) with broad operation wavelength (C + L band) and low mode crosstalk (minimum -30 dB) are fabricated. The proposed theoretical model can serve as a guideline for the design and optimization of the tapered ADC based mode (de)multiplexers.
引用
收藏
页数：13
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