Title :
Optical directional coupler based on Si-wire waveguides
Author :
Yamada, H. ; Tao Chu ; Ishida, S. ; Arakawa, Y.
Author_Institution :
Fundamental & Environ. Res. Labs., NEC Corp., Ibaraki, Japan
fDate :
3/1/2005 12:00:00 AM
Abstract :
We fabricated optical directional couplers with Si-wire waveguides and demonstrated their fundamental characteristics. Their coupling-length was extremely short, several micrometers, because of strong optical coupling between the waveguide cores. Wavelength demultiplexing functions were also demonstrated for devices with a long coupled waveguide. Optical output from a device 800 μm long changed reciprocally with 2.5-nm wavelength spacing between the parallel and cross ports.
Keywords :
demultiplexing; optical communication equipment; optical directional couplers; optical fabrication; optical planar waveguides; silicon; silicon-on-insulator; wavelength division multiplexing; 2.5 nm; 800 mum; Si; Si-wire waveguides; long coupled waveguides; optical communication equipment; optical directional coupler; optical fabrication; silicon-on-insulator technology; strong optical coupling; waveguide cores; wavelength demultiplexing functions; wavelength division multiplexing; Directional couplers; Distributed control; Integrated optics; Optical communication equipment; Optical coupling; Optical filters; Optical refraction; Optical variables control; Optical waveguides; Semiconductor waveguides; Demultiplexing; integrated optics; optical communication equipment; optical directional couplers (DCs); optical planar waveguide couplers; optical waveguide filters; silicon-on-insulator technology; wavelength-division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2004.840926
