Patents by Inventor Paul Colbourne

Paul Colbourne 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).

  • Patent number: 8300995
    Abstract: A M×N wavelength selective switch (WSS) module capable of independently routing any wavelength channel from any input port to any output port is provided. The M×N WSS includes a first beam relayer including first and second elements having optical power, each of which is disposed such that light transmitted to or from a first plurality of ports passes through a common point. The M×N WSS also includes a wavelength dispersive element, a first switching array having M rows including K switching elements, a second beam relayer, and a second switching array including N switching elements. The second switching array includes an optical by-pass disposed at the common point, which provides means for separating the input and output beams of light, and which allows both the input and output optical beams to traverse similar paths throughout the optical train.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: October 30, 2012
    Assignee: JDS Uniphase Corporation
    Inventor: Paul Colbourne
  • Publication number: 20120257853
    Abstract: A wavelength selective switch (WSS) based on an array of MEMS mirrors tiltable in 1-dimension about only one axis exhibits “hitting” or unwanted port connections during switching. Two WSS's can be cascaded to create M×N switching functionality in a hitless manner by the inclusion of block ports at specified positions in one or both of the WSS's. Greater use efficiency of ports can be achieved if quasi-hitless performance is acceptable.
    Type: Application
    Filed: June 18, 2012
    Publication date: October 11, 2012
    Applicant: JDS Uniphase Corporation
    Inventors: Paul Colbourne, Sheldon McLaughlin, Stephen Robert de Hennin, Pierre D. Wall
  • Patent number: 8233794
    Abstract: A wavelength selective switch (WSS) based on an array of MEMS mirrors tiltable in 1-dimension about only one axis exhibits “hitting” or unwanted port connections during switching. Two WSS's can be cascaded to create M×N switching functionality in a hitless manner by the inclusion of block ports at specified positions in one or both of the WSS's. Greater use efficiency of ports can be achieved if quasi-hitless performance is acceptable.
    Type: Grant
    Filed: September 9, 2009
    Date of Patent: July 31, 2012
    Inventors: Paul Colbourne, Sheldon McLaughlin, Stephen Robert de Hennin, Pierre D. Wall
  • Publication number: 20120057869
    Abstract: An M×N wavelength-selective switch (WSS) is provided. M input ports launch M input beams towards a wavelength-dispersing system, which disperses the M input beams into M×K sub-beams at K wavelength bands. A redirecting system redirects the M×K sub-beams towards a first 1×K switching array, which selects K sub-beams from the M×K sub-beams. The redirecting system blocks the (M?1)×K non-selected sub-beams, but re-images the K selected sub-beams onto a second 1×K switching array by means of at least one relaying element having optical power. The second 1×K switching array routes the K selected sub-beams to N output ports. The redirecting system redirects the K selected sub-beams towards the wavelength-dispersing system, which combines any selected sub-beams that are routed to a same output port. The N output ports then output the K selected sub-beams.
    Type: Application
    Filed: November 15, 2011
    Publication date: March 8, 2012
    Inventor: Paul Colbourne
  • Publication number: 20120002917
    Abstract: A M×N wavelength selective switch (WSS) module capable of independently routing any wavelength channel from any input port to any output port is provided. The M×N WSS includes a first beam relayer including first and second elements having optical power, each of which is disposed such that light transmitted to or from a first plurality of ports passes through a common point. The M×N WSS also includes a wavelength dispersive element, a first switching array having M rows including K switching elements, a second beam relayer, and a second switching array including N switching elements. The second switching array includes an optical by-pass disposed at the common point, which provides means for separating the input and output beams of light, and which allows both the input and output optical beams to traverse similar paths throughout the optical train.
    Type: Application
    Filed: June 30, 2010
    Publication date: January 5, 2012
    Inventor: Paul Colbourne
  • Patent number: 8081875
    Abstract: The present invention relates to a wavelength switch including two switching stages. A single actuation array of reflecting elements of a first switching stage routes sub-beams at different wavelength bands to a plurality of actuation arrays of reflecting elements of a second switching stage. Each second-stage actuation array routes sub-beams to a group of output ports associated with that second-stage actuation array. Advantageously, the sub-beams are redirected from the first switching stage to the second switching stage by a reflecting relay assembly, without being combined or coupled into fibers.
    Type: Grant
    Filed: February 8, 2008
    Date of Patent: December 20, 2011
    Assignee: JDS Uniphase Corporation
    Inventors: Barrie Keyworth, Paul Colbourne
  • Patent number: 8045854
    Abstract: A M×N wavelength selective optical switch (WSS) for switching K wavelength channels is disclosed. The WSS has two MEMS micromirror arrays, a M×K array and a 1×N array, for switching any wavelength channel from any input port to any output port, provided that any output port receives optical signals from only one input port. The WSS can be used to build fully reconfigurable, colorless and directionless node of an agile optical network.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: October 25, 2011
    Assignee: JDS Uniphase Corporation
    Inventor: Paul Colbourne
  • Publication number: 20110170867
    Abstract: The present invention relates to a wavelength switch including two switching stages. A single actuation array of reflecting elements of a first switching stage routes sub-beams at different wavelength bands to a plurality of actuation arrays of reflecting elements of a second switching stage. Each second-stage actuation array routes sub-beams to a group of output ports associated with that second-stage actuation array. Advantageously, the sub-beams are redirected from the first switching stage to the second switching stage by a reflecting relay assembly, without being combined or coupled into fibers.
    Type: Application
    Filed: February 8, 2008
    Publication date: July 14, 2011
    Inventors: Barrie Keyworth, Paul Colbourne
  • Patent number: 7903318
    Abstract: Diffractive patterns are disposed on a MEMS substrate in the gaps between the MEMS micromirrors to reduce backreflection of light leaking through the gaps and reflected by the MEMS substrate. The diffractive patterns are silicon surface-relief diffraction gratings or silicon oxide gratings on silicon substrate. Sub-wavelength gratings are used to suppress higher orders of diffraction; 50% duty cycle surface relief gratings on a substrate having index of refraction close to 3 are used to suppress both reflected and transmitted zero orders of diffraction simultaneously. The gratings have lines running parallel or at a slight angle to the gaps, to prevent the diffracted light from re-entering the gaps.
    Type: Grant
    Filed: January 27, 2009
    Date of Patent: March 8, 2011
    Assignee: JDS Uniphase Corporation
    Inventors: Abdul Jaleel K. Moidu, Paul Colbourne, Keith Anderson, John Michael Miller
  • Patent number: 7813040
    Abstract: A double stage isolator is formed of face-to-face slabs or sheets of materials that will suitably split, combine, non-reciprocally rotate to ensure isolation in a reverse direction from output ports to respective input ports of any light launched into the input ports. A right angled Porro-prism is disposed at an end of the affixed together slabs having planar faces to direct light launched in a folded fashion to the output ports. A half waveplate is used in addition to beam splitter combiners and non-reciprocal rotators means that rotate the light by 90 degrees so as to pass a single beam in a forward propagating direction and to interchange the polarization of two sub-beams that pass through from an output port to an input port in a reverse direction.
    Type: Grant
    Filed: August 1, 2006
    Date of Patent: October 12, 2010
    Assignee: JDS Uniphase Corporation
    Inventors: Paul Colbourne, Gonzalo Wills
  • Publication number: 20100172646
    Abstract: A M×N wavelength selective optical switch (WSS) for switching K wavelength channels is disclosed. The WSS has two MEMS micromirror arrays, a M×K array and a 1×N array, for switching any wavelength channel from any input port to any output port, provided that any output port receives optical signals from only one input port. The WSS can be used to build fully reconfigurable, colorless and directionless node of an agile optical network.
    Type: Application
    Filed: February 6, 2009
    Publication date: July 8, 2010
    Inventor: Paul Colbourne
  • Patent number: 7725027
    Abstract: The multi-unit wavelength switch enables multiple independent wavelength switching of a plurality of incoming multiplexed optical beams simultaneously on the same optical platform. The different units can have similar functionality or provide disparate functionality, e.g. any one or more of switching, dynamic gain equalization, wavelength blocking, and power monitoring.
    Type: Grant
    Filed: April 4, 2007
    Date of Patent: May 25, 2010
    Assignee: JDS Uniphase Corporation
    Inventors: Barrie Keyworth, Pierre D. Wall, Paul Colbourne
  • Publication number: 20100061727
    Abstract: A wavelength selective switch (WSS) based on an array of MEMS mirrors tiltable in 1-dimension about only one axis exhibits “hitting” or unwanted port connections during switching. Two WSS's can be cascaded to create M×N switching functionality in a hitless manner by the inclusion of block ports at specified positions in one or both of the WSS's. Greater use efficiency of ports can be achieved if quasi-hitless performance is acceptable.
    Type: Application
    Filed: September 9, 2009
    Publication date: March 11, 2010
    Inventors: Paul Colbourne, Sheldon McLaughlin, Stephen Robert de Hennin, Pierre D. Wall
  • Patent number: 7668216
    Abstract: The invention provides a method of reducing a time-averaged coherence of laser radiation for current-tunable lasers, and a laser apparatus realizing the method, by modulating the laser drive current using a modulation function optimized for obtaining a pre-determined time-averaged spectral profile of the laser radiation. In a preferred embodiment, the pre-determined time-averaged spectral profile has a substantially Gaussian shape. The method is described in reference to laser diodes.
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: February 23, 2010
    Assignee: JDS Uniphase Corporation
    Inventor: Paul Colbourne
  • Publication number: 20090190202
    Abstract: Diffractive patterns are disposed on a MEMS substrate in the gaps between the MEMS micromirrors to reduce backreflection of light leaking through the gaps and reflected by the MEMS substrate. The diffractive patterns are silicon surface-relief diffraction gratings or silicon oxide gratings on silicon substrate. Sub-wavelength gratings are used to suppress higher orders of diffraction; 50% duty cycle surface relief gratings on a substrate having index of refraction close to 3 are used to suppress both reflected and transmitted zero orders of diffraction simultaneously. The gratings have lines running parallel or at a slight angle to the gaps, to prevent the diffracted light from re-entering the gaps.
    Type: Application
    Filed: January 27, 2009
    Publication date: July 30, 2009
    Inventors: Abdul Jaleel K. Moidu, Paul Colbourne, Keith Anderson, John Michael Miller
  • Publication number: 20080247429
    Abstract: The invention provides a method of reducing a time-averaged coherence of laser radiation for current-tunable lasers, and a laser apparatus realizing the method, by modulating the laser drive current using a modulation function optimized for obtaining a pre-determined time-averaged spectral profile of the laser radiation. In a preferred embodiment, the pre-determined time-averaged spectral profile has a substantially Gaussian shape. The method is described in reference to laser diodes.
    Type: Application
    Filed: June 6, 2008
    Publication date: October 9, 2008
    Inventor: Paul Colbourne
  • Publication number: 20070291358
    Abstract: A double stage isolator is formed of a face-to-face slabs or sheets of materials that will suitably split, combine, non-reciprocally rotate to ensure isolation in a reverse direction from output ports to respective input ports of any light launched into the input ports. A right angled Porro-prism is disposed at an end of the affixed together slabs having planar faces to direct light launched in a folded fashion to the output ports. A half waveplate is used in addition to beam splitter combiners and non-reciprocal rotators means that rotate the light by 90 degrees so as to pass a single beam in a forward propagating direction and to interchange the polarization of two sub-beams that pass through from an output port to an input port in a reverse direction.
    Type: Application
    Filed: August 1, 2006
    Publication date: December 20, 2007
    Inventors: Paul Colbourne, Gonzalo Wills
  • Publication number: 20070242953
    Abstract: The multi-unit wavelength switch enables multiple independent wavelength switching of a plurality of incoming multiplexed optical beams simultaneously on the same optical platform. The different units can have similar functionality or provide disparate functionality, e.g. any one or more of switching, dynamic gain equalization, wavelength blocking, and power monitoring.
    Type: Application
    Filed: April 4, 2007
    Publication date: October 18, 2007
    Inventors: Barrie Keyworth, Pierre D. Wall, Paul Colbourne
  • Publication number: 20070237451
    Abstract: A multi-unit wavelength dispersive optical device includes a plurality of independent planar lightwave circuit (PLC) wavelength dispersive optical devices in a single device in which a plurality of independent front and backend units can utilize the same dispersion platform and share the same opto-mechanics and packaging.
    Type: Application
    Filed: April 4, 2007
    Publication date: October 11, 2007
    Inventor: Paul Colbourne
  • Patent number: 7162118
    Abstract: A single-sided optical switching device for functioning as a dual switch wherein individual switches share common switching means is disclosed. The individual switches have separate ports and share common switching means formed by a moveable refractor, a single lens and a stationary reflector, wherein the movable refractor is positionable between the lens and the stationary reflector for redirecting light within ports of individual switches. An embodiment of the device provides a single-sided dual 2×2 bypass switch comprising a single lens and a single switching element.
    Type: Grant
    Filed: October 25, 2005
    Date of Patent: January 9, 2007
    Assignee: JDS Uniphase Inc.
    Inventor: Paul Colbourne