Patents by Inventor Alan Hnatiw
Alan Hnatiw has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7443569Abstract: The invention provides a micro-electro-mechanical-system (MEMS) mirror device, comprising: a mirror having a 2-dimensional rotational T-shaped hinge at a first end, and having a flexible connection at a second end opposite the first end. The invention also provides a MEMS mirror device, comprising: a mirror having a 2-dimensional rotational T-shaped hinge at a first end; and a vertical actuator connected to the 2-dimensional T-shaped hinge through a rigid connection. The invention also provides a MEMS mirror device, comprising: a mirror connected to a first end of a rotational actuator through bending springs at a first end, and having a torsional spring at a second end opposite the first end; a movable cantilever connected to the mirror through the torsional spring; and a support structure connected to the first end and a second end of the rotational actuator through torsional springs and connected to the movable cantilever.Type: GrantFiled: August 17, 2006Date of Patent: October 28, 2008Assignee: JDS Uniphase CorporationInventors: Mohiuddin Mala, Thomas Ducellier, Alan Hnatiw
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Patent number: 7426347Abstract: An apparatus for shared optical performance monitoring (OPM) is provided. A wavelength sensitive device receives light at an input port and routes it wavelength selectively to a set of output ports. To perform optical performance monitoring on the output ports, a monitoring component of each output signal is extracted, and these monitoring components are then combined. A single OPM function is then performed on the combined signal. However, with knowledge of the wavelengths that were included in each output signal, a virtual OPM function can be realized for each output port. The per port functionality can include total power per port, power per wavelength per port, variable optical attentuation, dynamic gain equalization, the latter two examples requiring feedback.Type: GrantFiled: July 15, 2005Date of Patent: September 16, 2008Assignee: JDS Uniphase CorporationInventors: Alan Hnatiw, Sheldon Walklin, Thomas Ducellier
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Patent number: 7321704Abstract: A wavelength cross connect is provided in which there is a dispersive arrangement per port for each input port and each output port. Some of the dispersive arrangements have differing characteristics so as to result in different performances at the ports. The dispersive arrangements can differ in the selection of different dispersive elements or differing coupling optics. A particular implementation features a first set of waveguide dispersive elements having first performance characteristics, and a second set of waveguide dispersive elements having second performance characteristics.Type: GrantFiled: July 10, 2006Date of Patent: January 22, 2008Assignee: JDS Uniphase CorporationInventors: Thomas Ducellier, Alan Hnatiw, Puja Sehgal, Eliseo Ranalli
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Patent number: 7236660Abstract: An apparatus, system, and method for all-optical wavelength add-drop switching are provided. A number of optical ports, including at least one input port and at least one output port, are each optically coupled to a respective dispersive element. When a multichannel optical signal is input through an input port, an optical beam of each channel emerges from the dispersive element at an angle depending upon its wavelength. The beams emerging from the dispersive element pass through a bulk optical element which redirects each beam toward a respective one of a number of routing or switching elements, each of which has been set to redirect the respective beam through the bulk optical element towards a selected dispersive element coupled to a selected output port.Type: GrantFiled: May 20, 2003Date of Patent: June 26, 2007Assignee: JDS Uniphase CorporationInventors: Thomas Ducellier, Alan Hnatiw
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Patent number: 7212704Abstract: A wavelength selective switch is provided with a multiplexer such that both colourless (wavelength non-specific) and coloured (wavelength specific) ports are available. A waveguide device is employed with dispersive elements having different characteristics to realize the colourless and coloured ports within one waveguide device.Type: GrantFiled: October 12, 2005Date of Patent: May 1, 2007Assignee: JDS Uniphase CorporationInventors: Thomas Ducellier, Alan Hnatiw
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Publication number: 20070058238Abstract: The invention provides a micro-electro-mechanical-system (MEMS) mirror device, comprising: a mirror having a 2-dimensional rotational T-shaped hinge at a first end, and having a flexible connection at a second end opposite the first end. The invention also provides a MEMS mirror device, comprising: a mirror having a 2-dimensional rotational T-shaped hinge at a first end; and a vertical actuator connected to the 2-dimensional T-shaped hinge through a rigid connection. The invention also provides a MEMS mirror device, comprising: a mirror connected to a first end of a rotational actuator through bending springs at a first end, and having a torsional spring at a second end opposite the first end; a movable cantilever connected to the mirror through the torsional spring; and a support structure connected to the first end and a second end of the rotational actuator through torsional springs and connected to the movable cantilever.Type: ApplicationFiled: August 17, 2006Publication date: March 15, 2007Inventors: Mohiuddin Mala, Thomas Ducellier, Alan Hnatiw
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Publication number: 20070009204Abstract: A wavelength cross connect is provided in which there is a dispersive arrangement per port for each input port and each output port. Some of the dispersive arrangements have differing characteristics so as to result in different performances at the ports. The dispersive arrangements can differ in the selection of different dispersive elements or differing coupling optics. A particular implementation features a first set of waveguide dispersive elements having first performance characteristics, and a second set of waveguide dispersive elements having second performance characteristics.Type: ApplicationFiled: July 10, 2006Publication date: January 11, 2007Inventors: Thomas Ducellier, Alan Hnatiw, Puja Sehgal, Eliseo Ranalli
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Patent number: 7095546Abstract: The invention provides a micro-electro-mechanical-system (MEMS) mirror device, comprising: a mirror having a 2-dimensional rotational articulated hinge at a first end, and having a 1-dimensional rotational articulated hinge at a second end opposite the first end; a movable cantilever connected to the mirror through the 1-dimensional rotational articulated hinge; a support structure connected to the mirror through the 2-dimensional rotational articulated hinge and connected to the movable cantilever; whereby movement of said movable cantilever causes rotation of the mirror in a first axis of rotation, and the mirror is also rotatable about a second torsional axis of rotation perpendicular to said first axis of rotation.Type: GrantFiled: April 20, 2004Date of Patent: August 22, 2006Assignee: Metconnex Canada Inc.Inventors: Mohiuddin Mala, Thomas Ducellier, Alan Hnatiw, David Peale
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Patent number: 7088882Abstract: A wavelength cross connect is provided in which wavelength channels are individually switchable from one of a first set of ports to one of a second set of ports. Add and drop capability is provided on the sets of ports. Some embodiments feature a single row of ports, while others feature two dimensional arrays of ports. Some embodiments employ one dispersive element per port, and others employ one dispersive element per row of ports. Embodiments featuring transmissive and non-transmissive switching elements are provided.Type: GrantFiled: May 20, 2003Date of Patent: August 8, 2006Assignee: Metconnex Canada, Inc.Inventors: Thomas Ducellier, Alan Hnatiw
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Publication number: 20060159395Abstract: An array of dispersive arrangements, for example an array of waveguide dispersive elements, is compensated with a set of optical compensators such as wedges or pairs of cylindrical lenses. The optical compensators are selected to achieve a pre-defined dispersion profile across the array of waveguide dispersive elements. The optical compensators can make corrections for fabrication errors or other errors in an optical system that includes the array of waveguide dispersive elements. A particular application is found in waveguide selective switches.Type: ApplicationFiled: December 15, 2005Publication date: July 20, 2006Inventors: Alan Hnatiw, Thomas Ducellier, Eliseo Ranalli, Driss Touahri
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Publication number: 20060078251Abstract: A wavelength selective switch is provided with a multiplexer such that both colourless (wavelength non-specific) and coloured (wavelength specific) ports are available. A waveguide device is employed with dispersive elements having different characteristics to realize the colourless and coloured ports within one waveguide device.Type: ApplicationFiled: October 12, 2005Publication date: April 13, 2006Inventors: Thomas Ducellier, Alan Hnatiw
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Patent number: 7027684Abstract: A wavelength selective switch is realized by combining a quantized dispersion element and an array of switching means. The quantized dispersion element enables to concentrate all the wavelengths within predetermined wavelength bands onto the same location in the switching array. With this arrangement, a low fill factor switching array can be used while maintaining good flat-top spectral performance with no spectral dips and improving alignment tolerances.Type: GrantFiled: May 20, 2003Date of Patent: April 11, 2006Assignee: Metconnex Canada Inc.Inventors: Thomas Ducellier, Alan Hnatiw
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Publication number: 20060013587Abstract: Modular WSS (wavelength selective switch) designs are provided that allow a WSS to be built out for a first set of wavelengths, with the capacity for later expansion to handle a second set of wavelengths with minimal impact on the operation of the system for the first set of wavelengths. An optical signal separator separates each incoming signal into the two bands, and at each output, the bands are then re-combined. In between, wavelength selective switching is performed separately for each of the two bands, or initially only for one of the bands, with later upgradability to switch the second band.Type: ApplicationFiled: July 15, 2005Publication date: January 19, 2006Inventors: Kenneth Scott, Thomas Ducellier, Alan Hnatiw, Doug Ranahan
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Publication number: 20060013585Abstract: An apparatus for shared optical performance monitoring (OPM) is provided. A wavelength sensitive device receives light at an input port and routes it wavelength selectively to a set of output ports. To perform optical performance monitoring on the output ports, a monitoring component of each output signal is extracted, and these monitoring components are then combined. A single OPM function is then performed on the combined signal. However, with knowledge of the wavelengths that were included in each output signal, a virtual OPM function can be realized for each output port. The per port functionality can include total power per port, power per wavelength per port, variable optical attentuation, dynamic gain equalization, the latter two examples requiring feedback.Type: ApplicationFiled: July 15, 2005Publication date: January 19, 2006Inventors: Alan Hnatiw, Sheldon Walklin, Thomas Ducellier
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Publication number: 20050002600Abstract: A wavelength cross connect is provided in which wavelength channels are individually switchable from one of a first set of ports to one of a second set of ports. Add and drop capability is provided on the sets of ports. Some embodiments feature a single row of ports, while others feature two dimensional arrays of ports. Some embodiments employ one dispersive element per port, and others employ one dispersive element per row of ports. Embodiments featuring transmissive and non-transmissive switching elements are provided.Type: ApplicationFiled: May 20, 2003Publication date: January 6, 2005Inventors: Thomas Ducellier, Alan Hnatiw
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Publication number: 20040258351Abstract: A wavelength selective switch is realized by combining a quantized dispersion element and an array of switching means. The quantized dispersion element enables to concentrate all the wavelengths within predetermined wavelength bands onto the same location in the switching array. With this arrangement, a low fill factor switching array can be used while maintaining good flat-top spectral performance with no spectral dips and improving alignment tolerances.Type: ApplicationFiled: April 20, 2004Publication date: December 23, 2004Inventors: Thomas Ducellier, Alan Hnatiw
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Publication number: 20040252938Abstract: An apparatus, system, and method for all-optical wavelength add-drop switching are provided. A number of optical ports, including at least one input port and at least one output port, are each optically coupled to a respective dispersive element. When a multichannel optical signal is input through an input port, an optical beam of each channel emerges from the dispersive element at an angle depending upon its wavelength. The beams emerging from the dispersive element pass through a bulk optical element which redirects each beam toward a respective one of a number of routing or switching elements, each of which has been set to redirect the respective beam through the bulk optical element towards a selected dispersive element coupled to a selected output port.Type: ApplicationFiled: April 20, 2004Publication date: December 16, 2004Inventors: Thomas Ducellier, Alan Hnatiw
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Publication number: 20040212907Abstract: The invention provides a micro-electro-mechanical-system (MEMS) mirror device, comprising: a mirror having a 2-dimensional rotational articulated hinge at a first end, and having a 1-dimensional rotational articulated hinge at a second end opposite the first end; a movable cantilever connected to the mirror through the 1-dimensional rotational articulated hinge; a support structure connected to the mirror through the 2-dimensional rotational articulated hinge and connected to the movable cantilever; whereby movement of said movable cantilever causes rotation of the mirror in a first axis of rotation, and the mirror is also rotatable about a second torsional axis of rotation perpendicular to said first axis of rotation.Type: ApplicationFiled: April 20, 2004Publication date: October 28, 2004Inventors: Mohiuddin Mala, Thomas Ducellier, Alan Hnatiw, David Peale