Patents by Inventor Adam D. Cohen
Adam D. Cohen 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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Publication number: 20190213621Abstract: A deal value metric (or “deal score”) enables consumers to identify the quality of a ticket listing, and facilitates direct comparison of available event tickets having varying quality throughout a venue. The deal value metric disclosed herein also permits simultaneous comparison of tickets among multiple similar events, and provides a helpful criterion to supplement conventional search filters such as location or price.Type: ApplicationFiled: March 18, 2019Publication date: July 11, 2019Inventors: Jon D GROETZINGER, Eric R.J. WALLER, Russell P D'SOUZA, Adam D COHEN, Steve Andrew RITTER
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Publication number: 20120173310Abstract: A deal value metric (or “deal score”) enables consumers to identify the quality of a ticket listing, and facilitates direct comparison of available event tickets having varying quality throughout a venue. The deal value metric disclosed herein also permits simultaneous comparison of tickets among multiple similar events, and provides a helpful critierion to supplement conventional search filters such as location or price.Type: ApplicationFiled: December 29, 2011Publication date: July 5, 2012Inventors: Jon D. Groetzinger, Eric R.J. Waller, Russell P. D'Souza, Adam D. Cohen, Steve Andrew Ritter
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Patent number: 6909511Abstract: An apparatus is described for controlling the optical path length in an optical device, e.g. an interferometer, and more importantly to maintaining the optical path length difference in an interferometer. The apparatus may include an adjustable plate optically coupled with a beamsplitter. The plate may be rotated such that its surface receives light propagated from the beamsplitter at a non-zero incident angle. In one embodiment, temperature sensitivity is addressed by ensuring that the refractive index of the plate is greater than the refractive index of the beamsplitter. In another embodiment, the apparatus includes combination spacers having a component selected in dependence upon a composition, thickness, and orientation of the adjustable plate.Type: GrantFiled: February 26, 2002Date of Patent: June 21, 2005Assignee: JDS Uniphase CorporationInventors: Nigel Copner, Adam D. Cohen, Kim L. Tan, Christopher John Abraham, Feliks Lapinski
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Patent number: 6741624Abstract: A laser device, in particular a semiconductor laser, emitting optical radiation with a defined mode pattern can be produced from a standard Fabry-Perot (FP) laser by post-processing at the wafer level, i.e. before the wafer is separated into individual dies by cleaving/dicing. A sub-cavity is formed within the FP laser cavity. The sub-cavity has a predetermined length and is located between the FP facets. An aperiodic grating composed of a small number of contrast elements, typically less than 10, with predetermined inter-element separations and predetermined spacings relative to the sub-cavity is formed on or in the optical waveguide. The inter-element separations and the spacings relative to the sub-cavity produce a filtering function of the aperiodic grating for optical radiation propagating in the waveguide. The laser device is suitable for telecommunications applications due to its high side-mode-suppression ratio and narrow-linewidth.Type: GrantFiled: June 3, 2002Date of Patent: May 25, 2004Assignee: R J Mears LLCInventors: Robert J. Mears, Augustin Yiptong, Adam D. Cohen
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Patent number: 6546162Abstract: A 1½×2 optical switch has two GRIN lenses, each lens having two ports on its respective outward end face. The switch has a transmissive wedge-shaped switching element disposed between the GRIN lenses. When the switching element is disposed in the path between the GRIN lenses, a single connection is established between a port of the first GRIN lens and a port of the second GRIN lens, while light is prevented from coupling between the remaining ports.Type: GrantFiled: August 15, 2000Date of Patent: April 8, 2003Assignee: JDS Fitel Inc.Inventors: Nigel Copner, Mark Farries, Adam D. Cohen, Rajiv Iyer
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Publication number: 20020196826Abstract: A laser device, in particular a semiconductor laser, emitting optical radiation with a defined mode pattern can be produced from a standard Fabry-Perot (FP) laser by post-processing at the wafer level, i.e. before the wafer is separated into individual dies by cleaving/dicing. A sub-cavity is formed within the FP laser cavity. The sub-cavity has a predetermined length and is located between the FP facets. An aperiodic grating composed of a small number of contrast elements, typically less than 10, with predetermined inter-element separations and predetermined spacings relative to the sub-cavity is formed on or in the optical waveguide. The inter-element separations and the spacings relative to the sub-cavity produce a filtering function of the aperiodic grating for optical radiation propagating in the waveguide. The laser device is suitable for telecommunications applications due to its high side-mode-suppression ratio and narrow-linewidth.Type: ApplicationFiled: June 3, 2002Publication date: December 26, 2002Applicant: Nanovis LLCInventors: Robert J. Mears, Augustin Yiptong, Adam D. Cohen
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Publication number: 20020154314Abstract: An apparatus is described for controlling the optical path length in an optical device, e.g. an interferometer, and more importantly to maintaining the optical path length difference in an interferometer. The apparatus may include an adjustable plate optically coupled with a beamsplitter. The plate may be rotated such that its surface receives light propagated from the beamsplitter at a non-zero incident angle. In one embodiment, temperature sensitivity is addressed by ensuring that the refractive index of the plate is greater than the refractive index of the beamsplitter. In another embodiment, the apparatus includes combination spacers having a component selected in dependence upon a composition, thickness, and orientation of the adjustable plate.Type: ApplicationFiled: February 26, 2002Publication date: October 24, 2002Inventors: Nigel Copner, Adam D. Cohen, Kim L. Tan, Christopher John Abraham, Feliks Lapinski
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Patent number: 6415067Abstract: An optical switch is disclosed having 4-ports. The switch consists of a first GRIN lens having 2 ports adjacent its outwardly facing end face. A second GRIN lens is disposed to receive light from the first GRIN lens and has two ports adjacent its outer end face. In a first state, a first port from the first GRIN lens couples light with a first output port of the second GRIN lens. In a second state, a movable optical element in the form of a light transmissive wedge having a reflective surface, is disposed in the path between first and second GRIN lens, providing a connection between a port of the first GRIN lens and a second port of the second GRIN lens. In a third connect state, the reflective surface of the wedge connects a port of the first GRIN lens and an output port in the same first GRIN lens. Hence an N×M optical switch is disclosed.Type: GrantFiled: June 16, 2000Date of Patent: July 2, 2002Assignee: JDS Uniphase Inc.Inventors: Nigel Copner, Mark Farries, Adam D. Cohen, Rajiv Iyer
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Publication number: 20010006568Abstract: An optical switch is disclosed having 4-ports. The switch consists of a first GRIN lens having 2 ports adjacent its outwardly facing end face. A second GRIN lens is disposed to receive light from the first GRIN lens and has two ports adjacent its outer end face. In a first state, a first port from the first GRIN lens couples light with a first output port of the second GRIN lens. In a second state, a movable optical element in the form of a light transmissive element, having at least one refractive index gradient, is disposed in the path between first and second GRIN lenses, providing a connection between a port of the first GRIN lens and a second port of the second GRIN lens. Hence a 1½×2 optical switch is disclosed.Type: ApplicationFiled: December 19, 2000Publication date: July 5, 2001Inventors: Nigel Copner, Adam D. Cohen, Matthew Derstine
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Patent number: 6154585Abstract: An add-drop optical circuit is provided comprising: a first multiplex/demultiplexer for demultiplexing a composite optical signal having a plurality of channels, a second multiplex/demultiplexer for multiplexing a plurality of signals into a composite optical signal; waveguides disposed between the first demultiplexer and the second multiplexer/demultiplexer; and a plurality of 11/2.times.2 optical switches coupled to at least some of the waveguides for adding and dropping optical signals, the optical switches substantially preventing optical signals from propagating from an add port to drop port.Type: GrantFiled: June 17, 1999Date of Patent: November 28, 2000Assignee: JDS Fitel Inc.Inventors: Nigel Copner, Mark Farries, Adam D. Cohen, Rajiv Iyer