SoI Based Optical 1 × 2 Wavelength Independent 3-dB Power Splitter Design Using Three Rectangular Cross-Sectional Cuboidal Waveguides

Silicon-on-Insulator (SoI) based 1 × 2 3-dB wavelength independent optical power splitter is designed which consist of three parallel cuboidal waveguides of rectangular cross-sectional area. Input power, that is to be split, is injected at the central cuboid, also called primary waveguide. Split out...

Full description

Saved in:
Bibliographic Details
Published in:SILICON 2023-02, Vol.15 (3), p.1381-1391
Main Authors: Srivastava, Devansh, Vardhan, Shalini, Singh, Ritu Raj
Format: Article
Language:English
Subjects:
Area
Chemistry
Chemistry and Materials Science
Communication
Design
Environmental Chemistry
Finite element method
Glass substrates
Inorganic Chemistry
Lasers
Materials Science
Net losses
Optical Devices
Optical properties
Optics
Original Paper
Photonics
Polymer Sciences
Power splitters
Silicon
Splitting
Waveguides
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Silicon-on-Insulator (SoI) based 1 × 2 3-dB wavelength independent optical power splitter is designed which consist of three parallel cuboidal waveguides of rectangular cross-sectional area. Input power, that is to be split, is injected at the central cuboid, also called primary waveguide. Split output taken from the ports defined at the other end of secondary cuboids, known as secondary waveguides. Output power in each secondary waveguide, is nearly 45% of the total injected power. A theoretical model is built to investigate the normalized power flux in primary and secondary waveguides mathematically. The theoretical model is justified by the achieved simulation results using Finite Element Method (FEM). The width of the rectangular cross-section of primary and secondary waveguide is optimized, considering confinement factor and mode effective area. This is followed by optimization of the gap between primary and secondary cuboidal waveguides and evaluation of optimum longitudinal length of primary waveguide for 3 dB splitting application. The proposed design for 3 dB splitting is wavelength independent which is a valuable property for optical devices. Moreover, the design excludes any bending or tampering of the cuboidal waveguides, thereby avoiding any scope of bending loss. This, consequently, reduces the net loss associated with the splitter design.
ISSN:1876-990X
1876-9918
DOI:10.1007/s12633-022-02105-8