Open AccessExtremely small multimode-interference coupled triangular resonator with sharp angle of incidence
Author(s) -
Doo Gun Kim,
Geum-Yoon Oh,
Wonyong Choi,
Hyo Jin Kim,
Seon Hoon Kim,
Hyun Chul Ki,
Sang-Taek Kim,
Hang-Ju Ko,
Tae Un Kim,
Myoung Hak Yang,
Hwe Jong Kim,
JinHak Yi,
YoungChul Chung,
Nadir Dagli,
YoungWan Choi
Publication year - 2008
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.16.021053
Subject(s) - optics , resonator , total internal reflection , free spectral range , interference (communication) , multiplexing , wavelength , wavelength division multiplexing , physics , materials science , optoelectronics , telecommunications , channel (broadcasting) , computer science
Novel triangular ring resonators combining extremely small multimode-interference (MMI) coupler, low loss total internal reflection (TIR) mirrors, and semiconductor optical amplifiers are reported for the first time. The MMI length of 90 microm is among the shortest reported. The incidence angle of the TIR mirror inside the resonator is 22 degrees. A free-spectral range of approximately 2 nm is observed near 1550 nm along with an on-off ratio of 17 dB. The triangular resonators with a sharp angle are very attractive components due to their promise of compact size and high levels of integration. Therefore, large numbers of resonators can be integrated on a chip to increase functionality in future optical wavelength division multiplexing system.