Open AccessCompact resonant electro-optic modulator using randomness of a photonic crystal waveguide
Author(s) -
Yuta Ooka,
Nurul Ashikin Binti Daud,
Tomohiro Tetsumoto,
Takasumi Tanabe
Publication year - 2016
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.24.011199
Subject(s) - randomness , photonic crystal , optics , waveguide , transmittance , materials science , photonics , photonic integrated circuit , optoelectronics , modulation (music) , yablonovite , physics , statistics , mathematics , acoustics
We fabricate and demonstrate an electro-optic modulator that utilizes the randomness in a photonic crystal waveguide. We exploit a way of using random photonic crystals for device application that involves restricting the area influenced by the randomness. Our random photonic crystal waveguide is in a diffusive regime and the confinement of light is observed only for a W0.98 waveguide (98% of the original width) placed between W1.05 photonic crystal waveguides, where we obtained a transmittance spectrum with an ultra-high Q of 2.4 × 10 5 . A numerical investigation revealed that the experimental yield rate of the appearance of the high-Q confined mode is larger than 80%, by properly designing the length of W0.98. Since the confinement location is predictable, we integrate a p-i-n structure and demonstrate a GHz electro-optic modulation.