Title:
LIGHT WAVELENGTH MULTIPLEXER/DEMULTIPLEXER
Document Type and Number:
WIPO Patent Application WO/2007/037256
Kind Code:
A1
Abstract:
A change in the chip size, the center wavelength, the wavelength interval or the
number of channels of an array waveguide will change the waveguide length or the
like of the array waveguide. Then, an array waveguide type wavelength multiplexer/demultiplexer
circuit should be produced with the width, length, thickness and inclination
angle of its inclined portion changed. Changes in the width, length, thickness
and inclination angle of the inclined portion result in changes in production
conditions such as etching of the array waveguide type wavelength multiplexer/demultiplexer
circuit. A change in etching condition poses problems such as yield of the array
waveguide type wavelength multiplexer/demultiplexer circuit and an increase
in production man-hours. A wavelength multiplexer/demultiplexer comprising
first slab waveguide-side tapered units and second slab waveguide-side tapered
unit that are formed at equal intervals, and first slab waveguide-side inclination
units and second slab waveguide-side inclination units that are formed between
the first slab waveguide-side tapered units and second slab waveguide-side
tapered unit.
Inventors:
YAMADA TOMOYUKI (JP)
MORIYA YUJI (JP)
ITOH MIKITAKA (JP)
MORIYA YUJI (JP)
ITOH MIKITAKA (JP)
Application Number:
PCT/JP2006/319137
Publication Date:
April 05, 2007
Filing Date:
September 27, 2006
Export Citation:
Assignee:
NTT ELECTRONICS CORP (JP)
YAMADA TOMOYUKI (JP)
MORIYA YUJI (JP)
ITOH MIKITAKA (JP)
YAMADA TOMOYUKI (JP)
MORIYA YUJI (JP)
ITOH MIKITAKA (JP)
International Classes:
G02B6/12
Foreign References:
| JP2004013076A | 2004-01-15 | |||
| JPH1130723A | 1999-02-02 | |||
| JP2000147283A | 2000-05-26 | |||
| JP2003075666A | 2003-03-12 |
Other References:
SUGITA A. ET AL.: "Very Low Insertion Loss Arrayed-Waveguide Grating with Vertically Tapered Waveguides", IEEE PHOTONICS TECHNOLOGY LETTERS, vol. 12, no. 9, 2000, pages 1180 - 1182, XP000968634
Attorney, Agent or Firm:
OKADA, Kenji et al. (Setoguchi Bldg. 3rd fl. 12-5, Nishi-Shimbashi 2-chome, Minato-k, Tokyo 03, JP)
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