Open AccessUltrasmall multi-channel resonant-tunneling filter using mode gap of width-tuned photonic-crystal waveguide
Author(s) -
Akihiko Shinya,
Satoshi Mitsugi,
Eiichi Kuramochi,
Masaya Notomi
Publication year - 2005
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.13.004202
Subject(s) - photonic crystal , port (circuit theory) , optics , filter (signal processing) , finite difference time domain method , materials science , quantum tunnelling , guided mode resonance , interference (communication) , optoelectronics , channel (broadcasting) , electronic engineering , physics , computer science , telecommunications , electrical engineering , engineering , diffraction grating , grating
We have devised an ultra-small multi-channel drop filter based on a two-port resonant tunneling system in a two-dimensional photonic crystal with a triangular air-hole lattice. This filter does not require careful consideration of the interference process to achieve a high dropping efficiency. First we develop three-port systems based on a two-port resonant tunneling filter. Next we devise a multi-port channel drop filter by cascading these three-port systems. In this paper, we demonstrate a ten-channel drop filter with an 18 mum device size by 2D-FDTD calculation, and a three-port resonant tunneling filter with 65+/- 20 % dropping efficiency by experiment.