Open AccessCompact 1 × N power splitters with arbitrary power ratio for integrated multimode photonics
Author(s) -
Yohann Franz,
Massimiliano Guasoni
Publication year - 2021
Publication title -
journal of optics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.918
H-Index - 95
eISSN - 2040-8986
pISSN - 2040-8978
DOI - 10.1088/2040-8986/ac1830
Subject(s) - splitter , beam splitter , multi mode optical fiber , optics , power (physics) , photonics , beam propagation method , laser , fabrication , physics , computer science , optical fiber , refractive index , quantum mechanics , medicine , alternative medicine , pathology
We introduce a 1 × N integrated power splitter for the multimode photonics platform. The device converts an input laser beam into a higher-order mode beam, which afterwards is split. The core of this setup is represented by a non-uniform array of N waveguides that allows achieving arbitrary power splitting. The system exhibits high modal purity and is tested against wavelength variations and fabrication errors. The possibility to include a multi-input port configuration, leading to various power ratios via a single device, provides further flexibility. Our analysis is validated by finite-element-method simulations. At the best of our knowledge, this represents the first design of a device for arbitrary 1 × N power splitting of higher-order modes.