Waveguide To Waveguide Patents (Class 385/50)
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Publication number: 20130101256Abstract: A core intersection in an optical waveguide formed of a plurality of cores and a clad that surrounds the cores is disclosed, the structure characterized in that the same material as that of the cores is added to two planes, upper and lower planes, of each of core intersection spaces where the plurality of cores intersect (instead of using a clad material). The structure of a core intersection in an optical waveguide formed of a plurality of cores and a clad is disclosed, the structure characterized in that four planes that divide (isolate) each of core intersection spaces where the plurality of cores intersect, that is, four discontinuity spaces between the core intersection space and the cores connected thereto, are filled with the same material as that of the clad (instead of using a core material so that the core intersection space is seamlessly connected to surrounding core intersection spaces).Type: ApplicationFiled: June 22, 2011Publication date: April 25, 2013Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Jean Benoit Héroux, Sayuri Kohara, Yoichi Taira
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Publication number: 20130101255Abstract: A concentrator waveguide device is provided including a coupler having an interior passage therein which tapers from an input end of the coupler to an output end of the coupler, such that a cross-sectional area of an input end of the interior passage is larger than a cross-sectional area of an output end of the interior passage, wherein walls of the interior passage of the coupler are reflective; and a waveguide having an interior passage therein, wherein the waveguide is disposed such that light output from the output end of the interior passage of the coupler is incident into an input end of the interior passage of the waveguide, wherein walls of the interior passage of the waveguide are reflective.Type: ApplicationFiled: April 12, 2012Publication date: April 25, 2013Applicant: AFL TELECOMMUNICATIONS LLCInventor: William Klimowych
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Patent number: 8412007Abstract: The present invention relates to a 3-D waveguide coupling device capable of two-step coupling and a manufacture method thereof, the 3-D waveguide coupling device comprises: a first substrate, at least one waveguide layer, at least one assisting grating, at least one coupling material layer, and at least one 3-D tapered structure layer, wherein 3-D waveguide coupling device is able to couple the light into the waveguide layer by way of two-step coupling through the 3-D tapered structure layer, the coupling material layer and the assisting grating. Moreover, the light can also be coupled out from the waveguide layer through the assisting grating, the coupling layer, and the 3-D tapered structure. The manufacture method is adapted to fabricate the 3-D waveguide coupling device capable of two-step coupling via the present semiconductor process technology without increasing any other new equipment.Type: GrantFiled: May 27, 2010Date of Patent: April 2, 2013Assignee: National Tsing Hua UniversityInventors: Ming-Chang Lee, Yao-Tsu Yang, Chun-Wei Liao, Sheng-Wen Huang
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Patent number: 8406588Abstract: An optical connector includes a fiber-support block configured to couple cores of a plurality of optical fibers, and a lens-support block including a contact surface provided with a plurality of openings, the contact surface contacted to a contact surface of the fiber-support block, the cores of the optical fibers projecting from the contact surface of the fiber-support block insertable into the respective openings, the lens-support block having pairs of collimate lenses and convex lenses in the respective openings, each of the collimate lenses and a corresponding one of the convex lenses being spaced apart from each other in an optical-axis direction, the collimate lenses being movable in the optical-axis direction and being pressed by elastically deformable members, respectively, in the optical-axis direction and toward the contact surface of the fiber-support block.Type: GrantFiled: March 28, 2011Date of Patent: March 26, 2013Assignee: Fujitsu LimitedInventor: Jun Matsui
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Publication number: 20130070252Abstract: Systems and methods for a hollow core resonant filter are provided. In one embodiment, a hollow-core fiber resonant cavity comprises: a hollow-core fiber having a first and second ends; a first and a second pigtail fiber each of solid core fiber material. A tip of the first pigtail is optically aligned with the first-end to couple light from the first pigtail to the hollow core fiber across a first free-space gap. A tip of the second pigtail is optically aligned with the second-end to couple light from the second pigtail to the hollow-core fiber across a second free-space gap. The tip of the second pigtail is coated to reflect light received from the second-end back across the second free-space gap into the second-end. The tip of the first pigtail is coated to reflect light received from the first-end back across the first free-space gap into the first-end.Type: ApplicationFiled: September 21, 2011Publication date: March 21, 2013Applicant: HONEYWELL INTERNATIONAL INC.Inventor: John Feth
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Patent number: 8401352Abstract: A first optical waveguide of a convex shape is formed over a substrate. A second optical waveguide of a convex shape is formed over the substrate. A multimode interference waveguide of a convex shape is formed over the substrate for optically coupling the first optical waveguide to the second optical waveguide. Either side of the first optical waveguide is filled with a filling material, but either side of the second optical waveguide is not filled with the filling material.Type: GrantFiled: March 16, 2010Date of Patent: March 19, 2013Assignees: Fujitsu Limited, Sumitomo Electric Device Innovations, Inc.Inventors: Akinori Hayakawa, Takuya Fujii
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Patent number: 8394329Abstract: An agent sensing system may comprise an emitter optical resonator, a functionalized optical resonator, and a reference optical resonator. The emitter optical resonator may be configured to emit light at one or more system peak wavelengths. The functionalized optical resonator may be optically coupled to the emitter optical resonator and configured to propagate the emitted light in the absence of a particular agent, and filter the emitted light in the presence of the particular agent. The reference optical resonator may be optically coupled to at least one of the emitter optical resonator and the functionalized optical resonator such that an intensity of light propagated by the reference optical resonator is based at least on whether light emitted by the emitter optical resonator is filtered or propagated by the functionalized optical resonator.Type: GrantFiled: July 15, 2009Date of Patent: March 12, 2013Assignees: Raytheon Company, Massachusetts Institute of TechnologyInventors: Frank B. Jaworski, Anuradha M. Agarwal
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Publication number: 20130058611Abstract: A solar spectrum splitter comprises a series of hollow core optical waveguides. All hollow core optical waveguides are made of photonic crystals. Each of the photonic crystal optical waveguide is mounted inside of the other photonic crystal optical waveguide so as to form a structure in which each of the outer optical waveguide encapsulates all of the inner optical waveguides. Each of the optical waveguides bends out via penetrating through all outer optical waveguides. Wherein, the concentrated sunlight incident into the inner-most hollow core optical waveguide is confined and its components will be extracted out in sequence.Type: ApplicationFiled: September 1, 2011Publication date: March 7, 2013Inventor: Feng Shi
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Patent number: 8391657Abstract: An optical module includes an emitter-side mounting substrate, a receiver-side mounting substrate and an external waveguide substrate. The mounting substrate is provided with a waveguide having a core and a pair of fitting recesses. The external waveguide substrate is provided with an external waveguide having a core, a pair of fitting tabs and a lap joint portion. As the fitting tabs are fitted into the respective fitting recesses, the mounting substrate) and the external waveguide substrate are joined together, the two cores are aligned with each other, and the lap joint portion is positioned to overlap the mounting substrate.Type: GrantFiled: June 26, 2008Date of Patent: March 5, 2013Assignee: Panasonic CorporationInventors: Nobuyuki Asahi, Makoto Nisimura, Nobuyuki Miyagawa, Hiroyuki Yagyu, Yuichi Uchida, Yutaka Kinugasa, Tadahiro Yamaji, Takuya Matsumoto
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Publication number: 20130051727Abstract: A waveguide coupler includes a first waveguide and a second waveguide. The waveguide coupler also includes a connecting waveguide disposed between the first waveguide and the second waveguide. The connecting waveguide includes a first material having a first index of refraction and a second material having a second index of refraction higher than the first index of refraction.Type: ApplicationFiled: August 28, 2012Publication date: February 28, 2013Applicant: Skorpios Technologies, Inc.Inventors: Amit Mizrahi, Timothy Creazzo, Elton Marchena, Derek Van Orden, Stephen B. Krasulick
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Publication number: 20130050709Abstract: A method in which a ribbon fiber, containing a plurality of waveguides each having a first end and a second end, is wound into a coil and the second end of a first waveguide is coupled together with the first end of a second waveguide such that light in said first waveguide will transfer to said second waveguide.Type: ApplicationFiled: May 2, 2011Publication date: February 28, 2013Inventor: Ralph A. Bergh
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Patent number: 8385697Abstract: An optical fiber includes a cladding, a first core, and a second core. At least one of the first core and the second core is hollow and is substantially surrounded by the cladding. At least a portion of the first core is generally parallel to and spaced from at least a portion of the second core. The optical fiber includes a defect substantially surrounded by the cladding, the defect increasing a coupling coefficient between the first core and the second core.Type: GrantFiled: December 7, 2011Date of Patent: February 26, 2013Assignee: The Board of Trustees of the Leland Stanford Junior UniversityInventors: Vinayak Dangui, Michel J. F. Digonnet, Gordon S. Kino
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Patent number: 8385698Abstract: A controllable optical ring resonator, a photonic system and a method of controlling an optical ring resonator employ control electrodes periodically spaced apart along a closed loop optical path of an optical waveguide. The controllable optical ring resonator includes the optical waveguide and a plurality of the periodically spaced control electrodes. The photonic system includes an input optical waveguide segment and the controllable optical ring resonator adjacent and optically coupled to the segment. The method includes providing the plurality of periodically spaced control electrodes, providing an optical signal within the optical path, and addressing one or more of the control electrodes to interact with the optical signal within the optical path.Type: GrantFiled: December 12, 2007Date of Patent: February 26, 2013Assignee: Hewlett-Packard Development Company, L.P.Inventors: Terrel L. Morris, Michael R. Tan, Wei Wu, Shih-Yuan Wang
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Patent number: 8377381Abstract: An optical waveguiding optical format enables consistent optical analysis of small sample volumes. The optical format is comprised of an illumination light guide, a read window upon which a sample is placed, a sample collection needle or capillary, and a detection guide. Light redirecting facets are provided within the format itself such that the format serves as a unitary component for accepting light, directing light through a sample, and emitting light for detection.Type: GrantFiled: January 2, 2004Date of Patent: February 19, 2013Assignee: Bayer HealthCare LLCInventors: Andrew J. Dosmann, Frank W. Wogoman
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Publication number: 20130022312Abstract: An optical coupler for processing radiation is described. The optical coupler comprises a first deep-shallow waveguide and a second deep-shallow waveguide for guiding radiation in a propagation direction. Each of the deep-shallow waveguides is a waveguide comprising a shallow etched portion and an unetched portion having a width substantially constant along the propagation direction. The width of the shallow etched portion is substantially larger than the width of the unetched portion. The shallow etched portion of the first deep-shallow waveguide and the shallow etched portion of the second deep-shallow waveguide are arranged sufficiently close for coupling radiation from the first deep-shallow waveguide to the second deep-shallow waveguide.Type: ApplicationFiled: July 16, 2012Publication date: January 24, 2013Applicants: UNIVERSITEIT GENT, IMECInventors: Dirk Taillaert, Joost Brouckaert
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Patent number: 8355611Abstract: A waveguide stub is connected to a pillar-type square-lattice photonic crystal waveguide. Within the waveguide stub, the diameter of a defect is made larger than that of the original photonic crystal waveguide thereby reducing the group velocity of a guided light. The original waveguide and the waveguide stub are smoothly connected via a taper waveguide. Because of low group velocity of light in the waveguide stub, free spectral range (FSR) decreases thereby allowing the size of the waveguide stub to be reduced.Type: GrantFiled: November 25, 2008Date of Patent: January 15, 2013Assignee: NEC CorporationInventor: Masatoshi Tokushima
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Patent number: 8346037Abstract: An optical assembly includes a combination of laser sources emitting radiation, focused by a combination of lenses into optical waveguides. The optical waveguide and the laser source are permanently attached to a common carrier, while at least one of the lenses is attached to a holder that is an integral part of the carrier, but is free to move initially. Micromechanical techniques are used to adjust the position of the lens and holder, and then fix the holder it into place permanently using integrated heaters with solder.Type: GrantFiled: February 1, 2010Date of Patent: January 1, 2013Assignee: KAIAM Corp.Inventors: Bardia Pezeshki, John Heanue
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Patent number: 8346039Abstract: A nanofocusing system includes a dielectric waveguide having two opposing ends; and a metal-dielectric-metal layered waveguide having two opposing ends optically aligned at one end with one end of the dielectric waveguide, wherein the metal-dielectric-metal waveguide tapers in at least one dimension from the aligned end of the metal-dielectric-metal waveguide towards the opposing end, wherein light travelling through the dielectric waveguide is funneled into the dielectric layer of the metal-dielectric-metal waveguide, squeezed by the metal-dielectric-metal waveguide taper, and exits the metal-dielectric-metal waveguide as nanofocused light.Type: GrantFiled: November 5, 2009Date of Patent: January 1, 2013Assignee: Rochester Institute of TechnologyInventors: Zhaolin Lu, Ruoxi Yang
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Publication number: 20120328243Abstract: An optical converter and a method of manufacturing the optical converter are provided. The optical converter may include a signal receiving portion configured to receive an optical signal from an optical fiber which can be coupled to the optical converter, a signal output portion configured to output the optical signal received by the signal receiving portion, and a signal coupling portion being disposed between the signal receiving portion and the signal output portion and being configured to couple the optical signal received by the signal receiving portion into the signal output portion. The signal output portion may include a waveguide element having at least one tapered end section, and being partially or wholly surrounded by the signal coupling portion. The at least one tapered end section may be configured to couple the optical signal from the signal coupling portion into the waveguide element and the waveguide element may be configured to output the optical signal.Type: ApplicationFiled: December 23, 2009Publication date: December 27, 2012Inventors: Qing Fang, Tsung-Yang Liow, Mingbin Yu, Guo Qiang Patrick Lo
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Patent number: 8340481Abstract: An optical bus. Optical sub-assemblies are used to connect lengths of optical fiber to form a single optical fiber that is a bus. A master transceiver may be connected to one end of the fiber and nodes can be connected to the optical sub-assemblies. Each optical sub-assembly includes a center fiber with a mirror that enables each connector to reflect optical signals out of the fiber and that enables a node to launch optical signals on the optical bus. The optical bus can also be connected with a second transceiver that may be used to deliver optical power to the attached nodes. Some nodes include two optical subassemblies to enable bidirectional communication on the optical bus.Type: GrantFiled: September 2, 2011Date of Patent: December 25, 2012Assignee: Finisar CorporationInventor: Frank Levinson
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Patent number: 8340484Abstract: In a method and system to fabricate a compact optical device, a periodic group-delay device (PGDD) includes N optical input ports, N being a positive integer number, each port being configured to include one or more wavelength-division-multiplexing (WDM) channels; N corresponding optical output ports, each port being configured to include one or more WDM channels. The PGDD also includes a first slab waveguide region (FSWR) coupled to the N optical input ports, a second slab waveguide region (SSWR) coupled to the said N optical output ports, a first optical grating coupled to the FSWR, a second optical grating coupled to the SSWR, and; a third slab waveguide region (TSWR) coupled to at least one of the first and second optical gratings. The TSWR is configured to provide a configurable amount of dispersion to the N optical output ports. Optical signals carried by each WDM channel are processed concurrently and independently.Type: GrantFiled: January 5, 2010Date of Patent: December 25, 2012Assignee: Board of Regents, The University of Texas SystemInventors: Michael Vasilyev, Nikolai M. Stelmakh
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Patent number: 8340478Abstract: Disclosed are optical modulators that have two coupling paths or structures between an input port to an output port, at least one of which includes an optical resonator.Type: GrantFiled: December 3, 2009Date of Patent: December 25, 2012Assignee: Massachusetts Institute of TechnologyInventor: Milos Popovic
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Patent number: 8331008Abstract: Whispering gallery mode resonator based devices as photonic RF or microwave receivers.Type: GrantFiled: October 14, 2009Date of Patent: December 11, 2012Assignee: OEwaves, Inc.Inventors: Andrey B. Matsko, Anatoliy Savchenkov, David Seidel, Lute Maleki, Vladimir Ilchenko
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Patent number: 8331746Abstract: An illumination unit comprising a luminescence diode chip mounted on a chip carrier and comprising an optical waveguide is specified. The optical waveguide is joined together from at least two separate parts, wherein the luminescence diode chip is encapsulated by one of the parts of the optical waveguide. A method for producing a luminescence diode chip of this type and also an LCD display comprising an illumination unit of this type are furthermore specified.Type: GrantFiled: September 22, 2006Date of Patent: December 11, 2012Assignee: OSRAM Opto Semiconductors GmbHInventors: Georg Bogner, Herbert Brunner, Stefan Gruber
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Patent number: 8320037Abstract: An electro-optic device is provided. The electro-optic device includes a junction layer disposed between a first conductivity type semiconductor layer and a second conductivity type semiconductor layer to which a reverse vias voltage is applied. The first conductivity type semiconductor layer and the second conductivity type semiconductor layer have an about 2 to 4-time doping concentration difference therebetween, thus making it possible to provide the electro-optic device optimized for high speed, low power consumption and high integration.Type: GrantFiled: January 5, 2010Date of Patent: November 27, 2012Assignee: Electronics and Telecommunications Research InstituteInventors: Jeong Woo Park, Jongbum You, Gyungock Kim
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Publication number: 20120294568Abstract: According to embodiments of the present invention, an alignment method for a silicon photonics packaging is provided. The method includes providing a plurality of waveguides, each of the plurality of waveguides including an input and an output, arranging a light source relative to the plurality of waveguides, the light source being configured to provide an input light to the input of at least one of the plurality of waveguides, detecting respective output light intensity exiting the outputs of the plurality of waveguides, and identifying based on the detected output light intensity a selected waveguide of the plurality of waveguides for subsequent coupling.Type: ApplicationFiled: May 18, 2012Publication date: November 22, 2012Inventors: Jing Zhang, Jeong Hwan Song, Huijuan Zhang, Shiyi Chen
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Publication number: 20120294607Abstract: A spatially multiplexed optical link having a plurality of transmission paths, wherein at least one transmission path is configured to carry an optical-pump signal while one or more other transmission paths carry data-bearing signals. Disposed within the optical link are an optical signal-distribution module and an amplifier module. The optical signal-distribution module is configured to couple portions of the optical-pump signal into the data-bearing transmission paths. The amplifier module is configured to amplify the data-bearing signals using these portions of the optical-pump signal as a power source in a suitable all-optical amplification scheme. The optical-pump signal can optionally be tapped and applied to a photovoltaic element configured to directly power a device, e.g., an optical performance monitor, or to charge the battery of that device to enable its autonomous operation if external electrical power is not available where the device is deployed.Type: ApplicationFiled: May 20, 2011Publication date: November 22, 2012Applicant: ALCATEL-LUCENT USA INC.Inventors: Peter J. Winzer, Andrew R. Chraplyvy
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Functionally-graded three-dimensional ordered open-cellular microstructure and method of making same
Patent number: 8315499Abstract: A method for creating or forming a functionally graded 3D ordered open-cellular microstructure, and a functionally graded 3D ordered open-cellular microstructure. In one embodiment, the functionally-graded three-dimensional ordered open-cellular microstructure includes a first three-dimensional interconnected pattern of polymer waveguides having a first three-dimensional pattern; a second three-dimensional interconnected pattern of polymer waveguides having a second three-dimensional pattern differing from the first three-dimensional pattern; and an interface connected with the first three-dimensional interconnected pattern of polymer waveguides and the second three-dimensional interconnected pattern of polymer waveguides. Here, the term “functionally graded” refers to a spatial variation in the physical microstructure—and thus the properties—through the thickness of the material.Type: GrantFiled: April 9, 2012Date of Patent: November 20, 2012Assignee: HRL Laboratories, LLCInventors: Alan J. Jacobsen, Gregory L. Olson -
Patent number: 8300997Abstract: The present invention provides a wavelength interleaver comprising a first interleaving unit, a second interleaving unit and an adapting waveguide coupled between the first interleaving unit and the second interleaving unit; both the first interleaving unit and the second interleaving unit including an input waveguide, an output waveguide and a filter coupled between the input waveguide and the output waveguide. The present invention sets up the gap between the input waveguide and the filter, and the filter and the output waveguide for extending components usage specification of the signal transmission system. Therefore, there is no need to add unnecessary components in design, the size is smaller and the cost of the signal transmission system is reduced.Type: GrantFiled: January 6, 2010Date of Patent: October 30, 2012Assignee: National Tsing Hua UniversityInventors: Shiuh Chao, Chih-T'sung Shih
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Patent number: 8295661Abstract: An optical system is disclosed. The optical system includes first and second waveguides, a first dispersive element, and a coupler. The first waveguide is configured to support a first mode and a second mode of an optical input signal. The second mode being of a higher order than the first mode. The second waveguide has an input and an output and is configured to receive a portion of the optical input signal. The first dispersive element is disposed along a length of one of the first or second waveguides. The first dispersive element including a waveguide segment configured to induce a frequency-dependent phase shift in one of the portions of the optical input signal. The coupler is configured to couple the portion of the optical input signal in the second waveguide and the portion optical input signal in the first waveguide into the first waveguide. The coupling excites the second mode of the first waveguide to create a multimode optical signal.Type: GrantFiled: March 31, 2009Date of Patent: October 23, 2012Assignee: Infinera CorporationInventor: Brent E. Little
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Publication number: 20120263417Abstract: The present disclosure relates to an optical device that includes an optical splitting component that optically couples an optical input fiber to a plurality of optical output fibers. The optical output fibers have non-connectorized free ends that have been processed to reduce the ability of the non-connectorized free ends to reflect light back towards the optical splitting component.Type: ApplicationFiled: April 13, 2012Publication date: October 18, 2012Applicant: ADC Telecommunications, Inc.Inventors: Thomas G. LeBlanc, Trevor D. Smith
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Patent number: 8285090Abstract: A serial optical data transmission system is provided. The serial optical data transmission system includes a displaceable optical pathway disposed adjacent to a slot configured to receive a first monitoring and/or control module. The optical pathway is biased towards a serial optical data bus position for transmission of optical data to or from at least one second monitoring and/or control module when the first monitoring and/or control module is removed from the slot. Further, the optical pathway is displaced from the serial optical data bus position when the first monitoring and/or control module is in the slot.Type: GrantFiled: March 19, 2010Date of Patent: October 9, 2012Assignee: Rockwell Automation Technologies, Inc.Inventors: David A. Vasko, Robert E. Lounsbury, Kenwood H. Hall, Nathan J. Molnar, Douglas R. Bodmann
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Publication number: 20120251048Abstract: The invention relates to a photonic crystal four-port circulator based on the coupling of magneto-optical cavities, which comprises two same magneto-optical cavities and three waveguides which are symmetrically distributed on the periphery of each magneto-optical cavity, wherein two waveguides connected with the magneto-optical cavities respectively are in a “v-shaped” arrangement, thereby guaranteeing that waveguides which are connected with the left sides of the two magneto-optical cavities are parallel to each other and waveguides which are connected with the right sides of the two magneto-optical cavities are parallel to each other as well and achieving the high-efficiency transmission in the case of the coupling of the magneto-optical cavities.Type: ApplicationFiled: November 29, 2010Publication date: October 4, 2012Inventors: Zhengbiao Ouyang, Qiong Wang
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Patent number: 8280214Abstract: Nanoribbons and nanowires having diameters less than the wavelength of light are used in the formation and operation of optical circuits and devices. Such nanostructures function as subwavelength optical waveguides which form a fundamental building block for optical integration. The extraordinary length, flexibility and strength of these structures enable their manipulation on surfaces, including the precise positioning and optical linking of nanoribbon/wire waveguides and other nanoribbon/wire elements to form optical networks and devices. In addition, such structures provide for waveguiding in liquids, enabling them to further be used in other applications such as optical probes and sensors.Type: GrantFiled: November 13, 2006Date of Patent: October 2, 2012Assignee: The Regents of the University of CaliforniaInventors: Peidong Yang, Matt Law, Donald J. Sirbuly, Justin C. Johnson, Richard Saykally, Rong Fan, Andrea Tao
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Patent number: 8280201Abstract: A Mach-Zehnder modulator has an optical splitting element splitting an input optical signal into two optical signals that are conveyed by two optical waveguide arms, and an optical combining element combining the two optical signals into an output optical signal. Two traveling wave electrodes (TWEs) carry an electrical modulation signal to induce a change in phase of these two optical signals, and include a number of pairs of modulation electrodes positioned adjacent to the waveguide arms. At least some of the electrodes in one waveguide arm have a different shape (e.g., length or width) than the electrodes in the other waveguide arm to alter the effectiveness of the electrodes in inducing a phase change in the two optical signals.Type: GrantFiled: December 8, 2009Date of Patent: October 2, 2012Assignee: COGO Oprtonics, Inc.Inventor: Kelvin Prosyk
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Patent number: 8280205Abstract: The invention pertains to an optical connector assembly having an alignment mechanism for coupling two single-lens, multi-fiber optical connectors together. Particularly, each connector comprising a single lens through which the light from multiple fibers is expanded/focused for coupling to corresponding fibers in a mating connector. In one aspect of the invention, the alignment mechanism includes mating features extending from the fronts of the lenses having substantially longitudinal surfaces that meet and contact each other when the two connectors are coupled together in only one or a limited number of rotational orientations relative to each other to as to properly rotationally align the multiple fibers in the two mating connectors. This mechanism also helps align the two connectors with the optical axes of their lenses parallel to each other.Type: GrantFiled: July 23, 2010Date of Patent: October 2, 2012Assignee: Tyco Electronics CorporationInventors: David Donald Erdman, Michael Aaron Kadar-Kallen
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Patent number: 8280218Abstract: A tilting mirror MEMS variable optical attenuator attenuates light over a band of wavelengths with minimum wavelength dependent loss. The attenuator includes a lens that has a wedged input face and is made from a material that has high dispersion. The lens design causes different wavelengths to travel different paths through the attenuator such that wavelength dependent loss is reduced. The attenuator may be designed to have minimum wavelength dependent loss at a specified attenuation greater than zero.Type: GrantFiled: July 2, 2009Date of Patent: October 2, 2012Assignee: NeoPhotonics CorporationInventors: Asif A. Godil, Kenneth Honer, Matthew Lawrence, Eric Gustafson
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Publication number: 20120243829Abstract: The present invention is to provide a multi-diameter optical fiber link, which includes a first cable and a second cable connected in series with the first cable through an adaptor (or adaptors) and is characterized in that a first optical fiber enclosed in the first cable has a smaller diameter than a second optical fiber enclosed in the second cable. Hence, when the first and second cables are connected in series, an end surface of the first optical fiber is easily and precisely aligned within an end surface of the second optical fiber, thus allowing the second optical fiber to receive all optical signals transmitted from the first optical fiber. Consequently, the optical signals pass through the first and second optical fibers in succession, and a unidirectional signal transmission is realized in the multi-diameter optical fiber link without signal deterioration which may otherwise result from misalignment of the optical fibers.Type: ApplicationFiled: May 4, 2011Publication date: September 27, 2012Applicant: Netgami System LLC.Inventor: John Lynn
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Patent number: 8275224Abstract: An optical coherent detector that employs an interleave-chirped arrayed waveguide grating (AWG). The AWG has a periodic chirp pattern that enables the AWG to function as an optical 90-degree hybrid. If the AWG is implemented using a birefringent material, then the AWG can also function as a polarization demultiplexer. In one embodiment, the AWG is designed to simultaneously function as a wavelength demultiplexer, a polarization demultiplexer for each wavelength-division-multiplexed (WDM) signal component, and a 90-degree hybrid for each polarization-division-multiplexed component of each WDM signal component.Type: GrantFiled: August 14, 2009Date of Patent: September 25, 2012Assignee: Alcatel LucentInventor: Christopher R. Doerr
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Patent number: 8274732Abstract: The present invention relates to an optical module having a structure for reducing adverse contingencies such as increased number of fusion splicing points, drops in output, and higher costs associated with a greater number of optical components. The optical module comprises an amplification optical fiber, a transmission optical fiber, and a fusion splicing structure that fusion-splices the amplification optical fiber to the transmission optical fiber, in a state where a cover layer is removed at the tip portions, including the end faces, of these optical fibers. The fusion splicing structure includes a pumping light removing resin that covers directly the tip portions of the amplification optical fiber and the transmission optical fiber from which the cover layer is removed. The pumping light removing resin has a higher refractive index than a first cladding of the amplification optical fiber.Type: GrantFiled: January 22, 2010Date of Patent: September 25, 2012Assignee: Sumitomo Electric Industries, Ltd.Inventor: Shinobu Tamaoki
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Patent number: 8270784Abstract: An optical adapter that is arranged to connect two or more optical devices that have different connector layouts, the optical adapter comprising a material through which a plurality of waveguides is formed, the waveguides defining a first connector configuration at one end or face of the material and a second connector configuration at another, or same end or face of the material.Type: GrantFiled: June 19, 2008Date of Patent: September 18, 2012Assignee: Heriot-Watt UniversityInventors: Robert Roderick Thomson, Henry Thomas Gibson Bookey, Nicholas David Psaila, Ajoy Kumar Kar
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Patent number: 8265433Abstract: An optical switch is described that includes two optical waveguides, which are defined in a semiconductor layer, positioned proximate to an intermediate component, such as a micro-resonator or a directional coupler. Material underneath a portion of either or both optical waveguides is removed so that the portion of either or both optical waveguides is free standing, and a group of electrodes is proximate to the free-standing portion of either or both optical waveguides. During operation of the optical switch, a spacing-control circuit applies an electrical signal to the group of electrodes. An electrostatic force associated with the electrical signal modifies a spacing between the free-standing portion of either or both optical waveguides and the intermediate component, thereby substantially increasing optical coupling between either or both optical waveguides and the intermediate component to convey a broadband optical signal between the optical waveguides.Type: GrantFiled: April 14, 2010Date of Patent: September 11, 2012Assignee: Oracle America, Inc.Inventors: Xuezhe Zheng, Jin Yao, Ashok V. Krishnamoorthy
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Patent number: 8238704Abstract: A light coupler between an optical fiber (6) and a waveguide is made on a semiconductor-on-insulator substrate (1), this substrate (1) comprising a thin layer of semiconducting material in which the waveguide is made. The coupler comprises a light injector (5) and an adiabatic collector (4) made up with an inverted nanotip formed from the thin layer of semiconducting material. The injector (5) is formed on the insulator (3) and has a face (7) for receiving an end of the optical fiber (6). The adiabatic collector (4) has a cross-section which increases from a first end located on the side of said end of the optical fiber (6) right up to a second end which is connected to the waveguide, the injector (5) covering the adiabatic collector (4) and having a rib waveguide shape.Type: GrantFiled: September 29, 2009Date of Patent: August 7, 2012Assignee: Commissariat a l'Energie AtomiqueInventors: Badhise Ben Bakir, Jean-Marc Fedeli
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Patent number: 8229262Abstract: A fiber-optic coupler packaging including an internal encapsulation for encapsulating a fiber-optic coupler, the refraction index of the internal encapsulation is smaller than the refraction index of the fiber-optic coupler, and an external encapsulation, for encapsulating the internal encapsulation, the refraction index of the external encapsulation is greater than the refraction index of the internal encapsulation, the internal encapsulation and the external encapsulation are substantially transparent to the range of wavelengths of the light traveling inside the fiber-optic coupler.Type: GrantFiled: March 17, 2010Date of Patent: July 24, 2012Assignees: V-Gen Ltd., State of Israel-SOREQ Nuclear Research CenterInventors: Eran Inbar, Yoav Sintov
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Patent number: 8213754Abstract: An optical splitter, a combiner and a device. The optical splitter comprises a first longitudinal waveguide for receiving an incoming light wave; at least first and second pairs of output waveguides, the output waveguides of each pair being disposed on opposite sides of the first waveguide; wherein each of the output waveguides of each pair comprises a longitudinal portion disposed parallel to the first waveguide and such that optical power is coupled from the first waveguide into the respective longitudinal portions and the longitudinal portions of output waveguides of the first and second pairs are displaced along a length of the first waveguide; wherein each of the output waveguides of each pair further comprises a substantially S-shaped portion continuing from the respective longitudinal portions and such that optical power coupling between the respective S-shaped portions of output waveguides of the first and second pairs is substantially inhibited.Type: GrantFiled: June 21, 2007Date of Patent: July 3, 2012Assignee: Agency for Science Technology and ResearchInventors: Jason Png, Soon Thor Lim
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Patent number: 8208778Abstract: A channel is created within a planar layer. At least a portion of an optical path is formed within the channel. An optical core medium may be deposited into the channel. In various embodiments, reflective layers are deposited within and over the channel to form the optical path. In another embodiment, a photosensitive sheet is exposed to an optical path mask in the presence of an optical source to define an optical path lying within the plane of the sheet.Type: GrantFiled: November 15, 2010Date of Patent: June 26, 2012Assignee: Hewlett-Packard Development Company, L.P.Inventors: James J. deBlanc, Andrew Michael Cherniski, Herbert J. Tanzer
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Patent number: 8208776Abstract: There is provided an optical control device including a plurality of line-defect waveguides provided in a photonic crystal; each line-defect waveguide including a multiplicity of dielectric pillars with a finite height arranged at lattice points of a two-dimensional Bravais lattice. The optical control device comprises: a first line-defect waveguide; a second line-defect waveguide provided with the dielectric pillars having a thickness different from that of the dielectric pillars of the first line-defect waveguide; and a third line-defect waveguide arranged between the first and second line-defect waveguides and provided with the dielectric pillars whose thicknesses are gradually varied from those of the dielectric pillars of the first line-defect waveguide to those of the dielectric pillars of the second line-defect waveguide along a wave guiding direction.Type: GrantFiled: January 10, 2008Date of Patent: June 26, 2012Assignee: NEC CorporationInventor: Masatoshi Tokushima
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Patent number: 8204347Abstract: In a conventional optical signal processing device, a confocal optical system is configured in which a focusing lens is positioned at a substantially-intermediate point of a free space optical path. Thus, the free space optical system had a long length. It has been difficult to reduce the size of the entire device. The optical signal processing device of the present invention uses a lens layout configuration different from the confocal optical system to thereby significantly reduce the length of the system. The optical signal processing device consists of the first focusing lens positioned in the close vicinity of a signal processing device, and the second focusing lens positioned in the vicinity of a dispersing element. A distance between the dispersing element and the signal processing device is approximately a focal length of the first focusing lens. Compared with the conventional technique, the length of the optical path can be halved.Type: GrantFiled: August 21, 2008Date of Patent: June 19, 2012Assignee: Nippon Telegraph and Telephone CorporationInventors: Naoki Ooba, Kenya Suzuki, Motohaya Ishii, Shinji Mino, Atsushi Aratake
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Patent number: 8195020Abstract: A resonator for thermo optic devices is formed in the same process steps as a waveguide and is formed in a depression of a lower cladding while the waveguide is formed on a surface of the lower cladding. Since upper surfaces of the resonator and waveguide are substantially coplanar, the aspect ratio, as between the waveguide and resonator in an area where the waveguide and resonator front one another, decreases thereby increasing the bandwidth of the resonator. The depression is formed by photomasking and etching the lower cladding before forming the resonator and waveguide. Pluralities of resonators are also taught that are formed in a plurality of depressions of the lower cladding. To decrease resonator bandwidth, waveguide(s) are formed in the depression(s) of the lower cladding while the resonator is formed on the surface. Thermo optic devices formed with these resonators are also taught.Type: GrantFiled: December 6, 2007Date of Patent: June 5, 2012Assignee: Micron Technology, Inc.Inventors: Gurtej Singh Sandhu, Guy T. Blalock, Howard E. Rhodes
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Functionally-graded three-dimensional ordered open-cellular microstructure and method of making same
Patent number: 8195023Abstract: A method for creating or forming a functionally graded 3D ordered open-cellular microstructure, and a functionally graded 3D ordered open-cellular microstructure. In one embodiment, the functionally-graded three-dimensional ordered open-cellular microstructure includes a first three-dimensional interconnected pattern of polymer waveguides having a first three-dimensional pattern; a second three-dimensional interconnected pattern of polymer waveguides having a second three-dimensional pattern differing from the first three-dimensional pattern; and an interface connected with the first three-dimensional interconnected pattern of polymer waveguides and the second three-dimensional interconnected pattern of polymer waveguides. Here, the term “functionally graded” refers to a spatial variation in the physical microstructure—and thus the properties—through the thickness of the material.Type: GrantFiled: December 18, 2008Date of Patent: June 5, 2012Assignee: HRL Laboratories, LLCInventors: Alan J. Jacobsen, Gregory L. Olson