Author(s): Li, ZZ (Li, Zezheng); Huang, XR (Huang, Xingrui); Liu, Y (Liu, Yang); Kuang, YX (Kuang, Yingxin); Guan, H (Guan, Huan); Tian, LF (Tian, Lifei); Li, ZY (Li, Zhiyong); Han, WH (Han, Weihua)

Source: OPTICS EXPRESS Volume: 28 Issue: 23 Pages: 34137-34146 DOI: 10.1364/OE.405449 Published: NOV 9 2020

Abstract: We propose a novel optical 1x2 power splitter based on an asymmetric ladder-shaped multimode interference (MMI) coupler in silicon-on-insulator (SOI) which has an ultra-compact size of 3.3 mu mx2.4 mu m. A trapezoid with a small region is removed from the bottom left corner of the MMI coupler to achieve variable splitting ratio. The comparison with the asymmetric rectangular 1x2 splitter is numerically analyzed. By carefully optimizing the width of input taper, the proposed splitter shows a low phase deviation for the two output ports while keeping both of a low-loss performance and feasible splitting ratio. The simulated results show that the splitter can operate with an insertion loss less than 0.67 dB, a large range of splitting ratio from 50:50 to 11:89 and an ultra-low phase deviation less than 2.8 degrees among the C band spectra. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

Accession Number: WOS:000589869600031

PubMed ID: 33182890

Author Identifiers:

Author        Web of Science ResearcherID        ORCID Number

Li, Zezheng                  0000-0003-1088-8667

Liu, Yang                  0000-0002-8041-7062

Huang, Xingrui                  0000-0003-0192-7193

ISSN: 1094-4087

Full Text: https://www.osapublishing.org/oe/fulltext.cfm?uri=oe-28-23-34137&id=441999