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1. (WO2002006872) OPTICAL WAVEGUIDE DEVICE HAVING WAVELENGTH SELECTIVITY

Pub. No.:    WO/2002/006872    International Application No.:    PCT/JP2001/006011
Publication Date: Jan 24, 2002 International Filing Date: Jul 11, 2001
IPC: G02B 6/12
G02B 6/125
Applicants: NIPPON SHEET GLASS CO., LTD.

TOYOSHIMA, Takayuki

ANZAKI, Toshiaki

Inventors: TOYOSHIMA, Takayuki

ANZAKI, Toshiaki

Title: OPTICAL WAVEGUIDE DEVICE HAVING WAVELENGTH SELECTIVITY
Abstract:
An optical waveguide device (11) having a wavelength selectivity comprises a glass substrate (18) including an optical waveguide (12) having a plurality of channels (13 to 16) having a plurality of apertures in a first end face (17); and a multi-layer filter (19) formed on the first end face. The multi-layer filter has a film thickness varying continuously depending on the positions of the apertures of the channels. The light transmitted through the multi-layer filter has a center wavelength different with the position of the channel. When a mixed light comes from the channels into the multi-layer filter, it is divided into beams of different center wavelengths by the multi-layer filter having different thicknesses. This multi-layer filter is formed directly on the first end face of the substrate by a physical gas deposition method, so that the optical waveguide device is easily manufactured.