Open AccessUltrasmall multi-port channel drop filter in two-dimensional photonic crystal on silicon-on-insulator substrate
Author(s) -
Akihiko Shinya,
Satoshi Mitsugi,
Eiichi Kuramochi,
Masaya Notomi
Publication year - 2006
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.14.012394
Subject(s) - photonic crystal , optics , materials science , optoelectronics , silicon on insulator , photonic integrated circuit , insulator (electricity) , photonics , interference (communication) , drop (telecommunication) , optical filter , silicon , channel (broadcasting) , physics , computer science , telecommunications
We demonstrate ultrasmall five-port channel drop filters (CDFs) based on a two-dimensional photonic crystal slab. We combine seven photonic crystals with different lattice constants and use light reflections at the different photonic crystal boundaries to control the interference process and achieve a high dropping efficiency. We operate the CDFs in two modes; one requires careful control of the interference process, whereas the other does not. The former can output a narrower signal spectrum than the latter, and CDF design is easier with the latter. Both CDFs achieve a high dropping efficiency and can function in the CL-band.