Open AccessWaveguide couplers with new power splitting ratios made possible by cascading of short multimode interference sections
Author(s) -
David Jui-Yang Feng,
T. S. Lay,
T. Y. Chang
Publication year - 2007
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.15.001588
Subject(s) - optics , resonator , waveguide , power dividers and directional couplers , coupling (piping) , interference (communication) , power (physics) , physics , optical power , loop (graph theory) , multi mode optical fiber , materials science , optical fiber , laser , telecommunications , computer science , mathematics , combinatorics , channel (broadcasting) , quantum mechanics , metallurgy
We show that it is possible to obtain 2 x 2 waveguide couplers with new power splitting ratios for cross coupling of 7%, 64%, 80% and 93% by cascading two short MMI sections. These couplers have simple geometry and low loss. They offer valuable new possibilities for designing waveguide power taps, high-Q ring resonators, ladder-structure optical filters, and loop-mirror partial reflectors.