Derwyn Johnson

Person

Ontario, CA

People

Patents Grantslast 30 patents

Information Patent Grant
Method and device for reducing polarization dependence in an optica...
- Patent number 6,597,839
- Issue date Jul 22, 2003
- Her Majesty the Queen in right of Canada, as represented by the Ministry of I...
- Stephen J. Mihailov
- G02 - OPTICS
Information Patent Grant
Method and device for reducing polarization dependence in an optica...
- Patent number 6,385,369
- Issue date May 7, 2002
- Her Majesty the Queen in right of Canada as represented by the Minister of In...
- Kenneth O. Hill
- G02 - OPTICS
Information Patent Grant
Polarization insensitive grating in a planar channel optical wavegu...
- Patent number 6,374,016
- Issue date Apr 16, 2002
- Her Majesty the Queen in right of Canada, as represented by the Minister of I...
- Jacques Albert
- G02 - OPTICS
Information Patent Grant
Polarization insensitive grating in a planar channel optical wavegu...
- Patent number 6,256,435
- Issue date Jul 3, 2001
- Her Majesty the Queen in right of Canada, as represented by the Minister of I...
- Jacques Albert
- G02 - OPTICS
Information Patent Grant
Photosensitization of optical fiber and silica waveguides
- Patent number 5,495,548
- Issue date Feb 27, 1996
- Her Majesty the Queen in right of Canada, as represented by the Minister of C...
- Francois C. Bilodeau
- G02 - OPTICS
Information Patent Grant
Method of fabricating Bragg gratings using a silica glass phase gra...
- Patent number 5,367,588
- Issue date Nov 22, 1994
- Her Majesty the Queen in right of Canada, as represented by the Minister of C...
- Kenneth O. Hill
- G02 - OPTICS
Information Patent Grant
Method of creating an index grating in an optical fiber and a mode...
- Patent number 5,216,739
- Issue date Jun 1, 1993
- Her Majesty the Queen in right of Canada, as represented by the Minister of C...
- Kenneth O. Hill
- G02 - OPTICS
Information Patent Grant
Simplified WDM fused fiber coupler design
- Patent number 5,150,439
- Issue date Sep 22, 1992
- Her Majesty the Queen in right of Canada, as represented by the Minister of C...
- Kenneth O. Hill
- G02 - OPTICS
Information Patent Grant
Method of creating an index grating in an optical fiber and a mode...
- Patent number 5,104,209
- Issue date Apr 14, 1992
- Her Majesty the Queen in right of Canada, as represented by the Minister of C...
- Kenneth O. Hill
- G02 - OPTICS
Information Patent Grant
Coupler fabrication techniques for dissimilar fibers
- Patent number 5,054,874
- Issue date Oct 8, 1991
- Her Majesty the Queen in right of Canada, as represented by the Minister of C...
- Kenneth O. Hill
- G02 - OPTICS
Information Patent Grant
Coupler fabrication techniques for dissimilar fibers
- Patent number 5,004,316
- Issue date Apr 2, 1991
- Her Majesty the Queen in right of Canada, as represented by the Minister of C...
- Kenneth O. Hill
- G02 - OPTICS
Information Patent Grant
Method for making a grating assisted optical waveguide device
- Patent number 4,963,177
- Issue date Oct 16, 1990
- Canadian Patents and Development Limited/Societe Canadienne des Brevets et d'...
- Seyed-Iraj Najafi
- G02 - OPTICS
Information Patent Grant
Wavelength selective optical devices using optical directional coupler
- Patent number 4,900,119
- Issue date Feb 13, 1990
- Canadian Patents & Development Ltd.
- Kenneth O. Hill
- G02 - OPTICS
Information Patent Grant
Fabrication technique for low-loss fused taper directional couplers...
- Patent number 4,895,423
- Issue date Jan 23, 1990
- Canadian Patents & Development Limited
- Francois Bilodeau
- G02 - OPTICS
Information Patent Grant
Directional coupler utilizing biconically tapered optical fibers an...
- Patent number 4,779,945
- Issue date Oct 25, 1988
- Kenneth O. Hill
- G02 - OPTICS
Information Patent Grant
Optical fiber coupler with tunable coupling ratio and method of making
- Patent number 4,763,977
- Issue date Aug 16, 1988
- Canadian Patents and Development Limited-Societe
- Brian S. Kawasaki
- G02 - OPTICS
Information Patent Grant
Optical fiber reflective filter
- Patent number 4,474,427
- Issue date Oct 2, 1984
- Canadian Patents and Development Limited
- Kenneth O. Hill
- G02 - OPTICS
Information Patent Grant
Passive fiber optic data bus configurations
- Patent number 4,457,581
- Issue date Jul 3, 1984
- Her Majesty the Queen in right of Canada, as represented by the Minister of N...
- Derwyn C. Johnson
- G02 - OPTICS
Information Patent Grant
Low-loss star couplers for optical fiber systems
- Patent number 4,330,170
- Issue date May 18, 1982
- Canadian Patents and Development Limited
- Derwyn C. Johnson
- G02 - OPTICS
Information Patent Grant
Low loss access coupler for multimode optical fiber distribution sy...
- Patent number 4,291,940
- Issue date Sep 29, 1981
- Canadian Patents & Development Ltd.
- Brian S. Kawasaki
- G02 - OPTICS
Information Patent Grant
CW Brillouin ring laser
- Patent number 4,107,628
- Issue date Aug 15, 1978
- Canadian Patents and Development Limited
- Kenneth O. Hill
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical couplers for fiber optic communication links
- Patent number 4,021,099
- Issue date May 3, 1977
- Canadian Patents and Development Limited
- Brian S. Kawasaki
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
High power optical fiber coupling
- Publication number 20030103724
- Publication date Jun 5, 2003
- Gary S. Duck
- G02 - OPTICS
Information Patent Application
Laser collimator for a free space optical link
- Publication number 20020057873
- Publication date May 16, 2002
- JDS Uniphase Corporation
- Li Wu
- G02 - OPTICS
Information Patent Application
Method and device for reducing polarization dependence in an optica...
- Publication number 20020041733
- Publication date Apr 11, 2002
- Stephen J. Mihailov
- G02 - OPTICS
Information Patent Application
Polarization insensitive grating in a planar channel optical wavegu...
- Publication number 20010014200
- Publication date Aug 16, 2001
- Jacques Albert
- G02 - OPTICS

Derwyn Johnson

Person

Patents Grantslast 30 patents

Method and device for reducing polarization dependence in an optica...

Method and device for reducing polarization dependence in an optica...

Polarization insensitive grating in a planar channel optical wavegu...

Polarization insensitive grating in a planar channel optical wavegu...

Photosensitization of optical fiber and silica waveguides

Method of fabricating Bragg gratings using a silica glass phase gra...

Method of creating an index grating in an optical fiber and a mode...

Simplified WDM fused fiber coupler design

Method of creating an index grating in an optical fiber and a mode...

Coupler fabrication techniques for dissimilar fibers

Coupler fabrication techniques for dissimilar fibers

Method for making a grating assisted optical waveguide device

Wavelength selective optical devices using optical directional coupler

Fabrication technique for low-loss fused taper directional couplers...

Directional coupler utilizing biconically tapered optical fibers an...

Optical fiber coupler with tunable coupling ratio and method of making

Optical fiber reflective filter

Passive fiber optic data bus configurations

Low-loss star couplers for optical fiber systems

Low loss access coupler for multimode optical fiber distribution sy...

CW Brillouin ring laser

Optical couplers for fiber optic communication links

Patents Applicationslast 30 patents

High power optical fiber coupling

Laser collimator for a free space optical link

Method and device for reducing polarization dependence in an optica...

Polarization insensitive grating in a planar channel optical wavegu...