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

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

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...

Full description

Saved in:
Bibliographic Details
Main Authors: Haowen Shu, Bitao Shen, Qingzhong Deng, Ming Jin, Xingjun Wang, Zhiping Zhou
Format: Article
Language:English
Published: IEEE 2019-01-01
Series:IEEE Photonics Journal
Subjects:
Silicon photonics
Multiplexing equipment.
Online Access:https://ieeexplore.ieee.org/document/8844742/
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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 (TE<inline-formula><tex-math notation="LaTeX">$_0$</tex-math></inline-formula>-TE<inline-formula><tex-math notation="LaTeX">$_1$</tex-math></inline-formula>, TE<inline-formula><tex-math notation="LaTeX">$_0$</tex-math></inline-formula>-TE<inline-formula><tex-math notation="LaTeX">$_2$</tex-math></inline-formula>, TM<inline-formula><tex-math notation="LaTeX">$_0$</tex-math></inline-formula>-TM<inline-formula><tex-math notation="LaTeX">$_1$</tex-math></inline-formula>, TM<inline-formula><tex-math notation="LaTeX">$_0$</tex-math></inline-formula>-TM<inline-formula><tex-math notation="LaTeX">$_2$</tex-math></inline-formula>) with broad operation wavelength (C &#x002B; L band) and low mode crosstalk (minimum &#x2212;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.
ISSN:1943-0655

Similar Items