Optical waveguides – With optical coupler – Particular coupling structure
Reexamination Certificate
2008-07-22
2008-07-22
Sanghavi, Hemang (Department: 2874)
Optical waveguides
With optical coupler
Particular coupling structure
C385S039000, C385S140000
Reexamination Certificate
active
10578773
ABSTRACT:
Disclosed are an optical fuse and a device for fabricating such an optical fuse. The optical fuse comprises a medium constituting a structure in which a light-emitting end of a first optical waveguide is coupled to a light-incident end of a second optical waveguide across the medium, and a light-absorbing body adapted to absorb the light. The medium is transparent to light passing through the structure, and the light-absorbing body is disposed in contact with an outer peripheral surface of the medium in such a manner as to allow a part of light emitted from the light-emitting end into the medium to reach the light-absorbing body. The optical-fuse fabricating device comprises a pair of first and second support members formed, respectively, with first and second through-holes for supporting an optical fiber, and a beam member mechanically connecting the first and second support member together. When the first and second support members are arranged such that respective axes of the first and second through-holes are aligned in a straight line to allow a single common optical fiber to be inserted into both the first and second through-holes, a spacial gap is formed between the single common optical fiber and the beam. The present invention can provide an optical fuse having a low insertion loss and allowing an optical coupling to be eliminated in response to an irreversible change induced therein, and a device capable of allowing such an optical fuse to be fabricated in a simple and easy way.
REFERENCES:
patent: 5074635 (1991-12-01), Justice et al.
patent: 5191167 (1993-03-01), Beyer
patent: 6218658 (2001-04-01), Taneda et al.
patent: 6415075 (2002-07-01), DeRosa et al.
patent: 6612753 (2003-09-01), Cryan et al.
patent: 2002/0076148 (2002-06-01), DeRosa et al.
patent: 2005/0111782 (2005-05-01), Donval et al.
patent: 2007/0127870 (2007-06-01), Oron et al.
patent: 06-201940 (1994-07-01), None
patent: 9-146056 (1997-06-01), None
patent: 09-297286 (1997-11-01), None
patent: 11-109427 (1999-04-01), None
patent: 11-274547 (1999-10-01), None
patent: 11-281803 (1999-10-01), None
patent: 11-281842 (1999-10-01), None
patent: 3169885 (2001-03-01), None
patent: 2002-221740 (2002-08-01), None
patent: WO 03/058338 (2003-07-01), None
patent: WO 03/076971 (2003-09-01), None
Shinichi Todokori et al., “Optical Fuse by Carbon-Coated TeO2Glass Segment Inserted in Silica Glass Optical Fiber Circuit”, Japanese Journal of Applied Physics vol. 43, No. 2B, 2004, pp. L256-L257.
Shinichi Todoroki et al., “Observation of Blowing out in Low Loss Passive Optical Fuse Formed in Silica Glass Optical Fiber Circuit”, Japanese Journal of Applied Physics vol. 43, No. 6A, 2004, pp. L728-L730.
International Search Report mailed Mar. 8, 2005 of International Application PCT/JP2004/016975.
National Institute for Materials Science
Rojas Omar
Sanghavi Hemang
Westerman, Hattori, Daniels & Adrian , LLP.
LandOfFree
Optical fuse and component for fabricating optical fuse does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical fuse and component for fabricating optical fuse, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical fuse and component for fabricating optical fuse will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3919419