Optical waveguides – With optical coupler – Input/output coupler
Reexamination Certificate
2005-08-02
2005-08-02
Assaf, Fayez G. (Department: 2872)
Optical waveguides
With optical coupler
Input/output coupler
C385S031000, C385S028000, C385S015000, C385S132000
Reexamination Certificate
active
06925231
ABSTRACT:
The invention is an optical device having a plurality of optical waveguides and comprising at least one waveguide, which is defined by a core region having first and second sections that are series connected and are capable of transmitting light energy, the core region being surrounded by a cladding that essentially confines the light energy within the core region, the first section of the core region comprising a first length of material whose refractive index increases as temperature increases; the at least one waveguide is temperature-compensating in that and the second section of the core region comprises a second length of material whose refractive index has a sufficient enough difference of the rate of the variation of the index with the temperature, wherein the second section has a plurality of grooves, filled with the material whose refractive index has a sufficient enough difference of the rate of the variation of the index with the temperature, that are designed in a way the effective width of the second section changes between adjacent wave guides.
REFERENCES:
patent: 6137939 (2000-10-01), Henry et al.
patent: 6256442 (2001-07-01), Nolan et al.
patent: 6304687 (2001-10-01), Inoue et al.
patent: 6690855 (2004-02-01), Thompson et al.
patent: 2004/0126052 (2004-07-01), Kamei et al.
patent: 0 919 840 (1999-06-01), None
patent: 1 072 908 (2001-01-01), None
patent: 2 360 098 (2001-09-01), None
patent: WO 02/1681 (2002-02-01), None
Kaneko A et al: “Athermal Silica-Based Arrayed-Waveguide grating (AWG) multi/demultiplexers with new loss groove design” Electronics Letters, IEE Stevenage, GB, vol. 36, No. 4, Feb. 17, 2000, pp. 318-319, XP006014828, ISN: 0013-5194.
Kaneko et al: “Athermal silica-based arrayed-waveguide grating (AWG) multiplexers with new low loss groove design” OFC/IOOC '99. Optical Fiber Communication Conference and the International Conference on Integrated optic and Optical Fiber Communications (CAT. No. 99CH36322, OFC/IOOC '99 Optical Fiber Communication Conference and the International Conference on in, pp. 204-206, vol. 1, XP000966866, 1999, Piscataway, NJ, USA, IEEE, USA.
Inoue Y et al: “Athermal Silica-Based Arrayed Waveguide Grating (AWG) Multiplexer” IOOC-ECOC. European Conference on Optical Communication ECOC. International Conference on Integrated Optics and optical Fibre Communication IOOC, XX, XX, No. 448, Sep. 22, 1997, pp. 33-36, XP002058668.
Kokubun Y: “Athermal waveguides and temperature insensitive lightwave devices” Lasers and Electro-Optics, 1999. Cleo/Pacific Rim'99. The Pacific Rim Conference on Seoul, South Korea, Aug. 30-Sep. 3, 1999, Piscataway, NJ, USA, IEEE, US, Aug. 30, 1999, pp. 1143-1144, XP010364307.
Tanobe H et al: “Temperature insensitive arrayed waveguide gratings on InP substrates” IEEE Photonics Technology Letters, Feb. 1998, IEEE, USA, vol. 10, No. 2, pp. 235-237, XP000199330.
Lázaro Villa José Antonio
Münzner Roland
Assaf Fayez G.
Avanex Corporation
Moser, Patterson & Sheridan L.L.P.
LandOfFree
Optical device for reducing temperature related shift 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 device for reducing temperature related shift, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical device for reducing temperature related shift will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3463849