Optical waveguides – Planar optical waveguide
Reexamination Certificate
2007-03-05
2010-11-09
Stahl, Mike (Department: 2874)
Optical waveguides
Planar optical waveguide
C385S028000, C385S043000
Reexamination Certificate
active
07831122
ABSTRACT:
The purpose of present inventions is to provide an optical control device having a single-mode waveguide in the optical control device having the ridge waveguide, and to stably manufacture and provide the optical control device having the single-mode waveguide with high precision even when the substrate is a thin plate with the thickness of 10 μm or less. An optical control device having a substrate1formed with an optical waveguide, in which the substrate is a thin plate with a thickness of 10 μm or less, at least a portion of the optical waveguide is configured as a ridge waveguide21, a trench20having a width of 10 μm or less is formed on both sides of at least portions of the ridge waveguide, and a taper waveguide section (area B) continuously changes a light propagation mode of the waveguide between a single-mode and a multi-mode by continuously changing the width or depth of the trench. Additionally, it is desirable that the taper waveguide section is disposed at least in one of a light input section and a light output section, and light propagating through the waveguide is in the single-mode in a section in which the taper waveguide section is disposed.
REFERENCES:
patent: 4999686 (1991-03-01), Autier et al.
patent: 5585957 (1996-12-01), Nakao et al.
patent: 5799119 (1998-08-01), Rolland et al.
patent: 6465269 (2002-10-01), Furushima
patent: 6853793 (2005-02-01), van der Vliet et al.
patent: 2006/0109542 (2006-05-01), Mizuuchi et al.
patent: 2-110405 (1990-04-01), None
patent: 10-073792 (1998-03-01), None
patent: 2002-341393 (2002-11-01), None
patent: 2004-219751 (2004-08-01), None
Wenger, G., et al., Design and Fabrication of Monolithic Optical Spot Size Transformers (MOST's) for Highly Efficient Fiber-Chip Coupling, Journal of Lightwave Technology, vol. 12, No. 10, Oct. 1994, pp. 1782-1790.
International Search Report, International Application No. PCT/JP2007/054221, Apr. 3, 2007.
Ichikawa Junichiro
Kinpara Yuhki
Kondou Katsutoshi
Yamamoto Futoshi
Chapman and Cutler LLP
Stahl Mike
Sumitomo Osaka Cement Co. Ltd.
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