Open AccessDual-mode broadband compact 2 × 2 optical power splitter using sub-wavelength metamaterial structures
Author(s) -
Hatef Shiran,
Guowu Zhang,
Odile Liboiron-Ladouceur
Publication year - 2021
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.423882
Subject(s) - splitter , optics , broadband , insertion loss , mode scrambler , multi mode optical fiber , bandwidth (computing) , interferometry , multiplexing , materials science , power dividers and directional couplers , optical power , optoelectronics , beam splitter , physics , optical fiber , telecommunications , computer science , plastic optical fiber , laser
The multimode power splitter is a fundamental component in mode-division multiplexed systems. In this paper, we design and characterize a broadband compact dual-mode multimode interferometer (MMI) optical power splitter based on subwavelength grating (SWG) structures. The optimized dual-mode MMI is three times more compact than its conventional mode insensitive MMIs and shows low loss and low crosstalk flat response over 100 nm bandwidth. Characterizations of the fabricated dual-mode splitter show that the total excess loss in the experiment is less than 0.1 dB and 0.65 dB for TE0 and TE1, respectively, and the modal crosstalk is less than -17 dB for both input modes.