Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 17, Issue 3, Pages 585-587Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2004.840926
Keywords
demultiplexing; integrated optics; optical communication equipment; optical directional couplers (DCs); optical planar waveguide couplers; optical waveguide filters; silicon-on-insulator technology; wavelength-division multiplexing
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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 mum long changed reciprocally with 2.5-nm wavelength spacing between the parallel and cross ports.
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