Patents by Inventor Stephen Robert de Hennin

Stephen Robert de Hennin 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).

  • MxN wavelength selective switch
    Patent number: 8391709
    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: June 18, 2012
    Date of Patent: March 5, 2013
    Assignee: JDS Uniphase Corporation
    Inventors: Paul Colbourne, Sheldon McLaughlin, Stephen Robert de Hennin, Pierre D. Wall
  • MxN WAVELENGTH SELECTIVE SWITCH
    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
  • Hitless MxN wavelength selective switch
    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
  • HITLESS MxN WAVELENGTH SELECTIVE SWITCH
    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
  • Optical array with beam alignment feature
    Patent number: 7359053
    Abstract: An array of optical elements for processing a spatially dispersed optical beam including monitoring optical elements for determining the position of the optical beam in the array is disclosed. The monitoring optical elements have a width that varies in ay direction normal to the array axis, enabling the determination of the beam position across the monitoring elements in both x and y directions. The monitoring optical elements are preferably disposed in the end portions of the array for the beam tilt determination. The optical elements can be e.g. liquid crystal pixels or micro-mirrors.
    Type: Grant
    Filed: March 1, 2005
    Date of Patent: April 15, 2008
    Assignee: JDS Uniphase Inc.
    Inventors: Steven Harold Moffat, Stephen Robert de Hennin, Martin Matthews, David William Charles Markin, Philip Duggan