光デバイス - 富士通株式会社

Title:

光デバイス

Document Type and Number:

Japanese Patent JP4347224

Kind Code:

B2

Abstract:

An optical device enabling reducing device scale is constituted by M circulators ( 11 a, 11 b), (M being a natural number), a waveguide-type diffraction grating ( 12 ) including M first input/output waveguides ( 121 a, 121 b) formed at its one end and MxN second input/output waveguides ( 125 a- 1 to 125 a-N and 125 b- 1 to 125 b-N) formed at the other end, (N being a natural number), and paths from the M circulators being connected to the M first input/output waveguides; and N reflection-type optical switches ( 13 - 1 to 13 -N) each for reflecting the optical paths for M adjacent waveguides out of the MxN second input/output waveguides( 125 a- 1 to 125 a-N and 125 b- 1 to 125 b-N) and for switching over the returning-destination waveguide respectively, wherein the M circulators, the waveguide-type diffraction grating and N reflection-type optical switches are arranged in cascade. Consequently, the optical device can function preferably also as a wavelength selective optical switch available in a WDM transmission system.

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Inventors:

Koji Terada
Haruhiko Tabuchi
Kohei Shibata
Akira Naruse

Application Number:

JP2004571856A

Publication Date:

October 21, 2009

Filing Date:

May 15, 2003

Export Citation:

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