Thin Film Optical Waveguide Patents (Class 385/130)
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Patent number: 8189968Abstract: The present invention provides an optical apparatus having a multimode interference coupler configured to optically couple a strip waveguide to a slot photonic crystal waveguide. The multimode interference coupler has a coupling efficiency to the slot photonic crystal waveguide greater than or equal to 90%, a width that is approximately equal to a defect width of the slot photonic crystal waveguide, a length that is equal to or less than 1.5 ?m, and interfaces with the slot photonic crystal waveguide at an edge of a period that gives a termination parameter of approximately zero. The optical apparatus may also include an insulation gap disposed between the multimode interference coupler and the slot photonic crystal waveguide, wherein the length of the multimode interference coupler is reduced by approximately one half of a width of the insulation gap.Type: GrantFiled: August 28, 2009Date of Patent: May 29, 2012Assignee: Board of Regents, The University of TexasInventors: Xiaonan Chen, Ray T. Chen
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Patent number: 8189980Abstract: The present invention provides an electromagnetic wave resonator that is capable of showing surface wave resonance typically as outstanding plasmon resonance and can be manufactured industrially with excellent reproducibility and efficiency by combining currently available microprocessing technologies. The electromagnetic wave resonator of the present invention includes a first negative dielectric surface, a second negative dielectric surface and a positive dielectric thin film disposed between the first and the second negative dielectric surfaces. The positive dielectric thin film has an end face having an electromagnetic wave introduced therefrom. Intensity of the electromagnetic wave having a predetermined wavelength and being introduced from the end face is enhanced in the electromagnetic wave resonator due to resonance of a surface wave having an electric field component in a direction of film thickness of the positive dielectric thin film and without having a cut-off frequency.Type: GrantFiled: February 24, 2006Date of Patent: May 29, 2012Assignee: National Institute for Materials ScienceInventors: Hideki Miyazaki, Yoichi Kurokawa
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Patent number: 8168940Abstract: A light transmission module includes a light transmission path for transmitting light, an optical element including a light emitting and receiving surface for optically coupling with the light transmitted by the light transmission path, and being formed with a light emitting and receiving point having a function of photoelectric conversion and an electrode pad on the light emitting and receiving surface. The light transmission module further includes a substrate mounted with the optical element and an electrical wiring and an electrical connecting member for electrically connecting the electrode pad and the electrical wiring. The substrate includes a wiring exposed surface where the electrical wiring is exposed. The electrical connecting member is made of solidified object of a liquid conductive material arranged to contact the electrical wiring, which is exposed at the wiring exposed surface, and the electrode pad.Type: GrantFiled: December 24, 2008Date of Patent: May 1, 2012Assignee: OMRON CorporationInventors: Junichi Tanaka, Hiroshi Sameshima, Naru Yasuda
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Patent number: 8168379Abstract: The present invention discloses using SPR technology to simultaneously and qualitatively detect different HPV genotypes. It also discloses an efficient formula to make a mixed SAM that can greatly enhance the immobilization ability of the metal surface in SPR based techniques, which is good for the immobilization of HPV specific DNA probes used for the detection of different HPV genotypes.Type: GrantFiled: October 4, 2007Date of Patent: May 1, 2012Assignee: CMED Technologies Ltd.Inventors: Zhong Chen, Ning Liu, Huawei Yang, Hongtao Zhang, Yuye Yang, Yuyang Hu, Sheng Wang, Qingmei Ma
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Patent number: 8158342Abstract: This invention discloses using SPR technology to simultaneously and qualitatively measure the presence of HIV related antibodies in a serum sample for the diagnosis of HIV infection. It also discloses an efficient formula to make a mixed SAM that can greatly enhance the immobilization ability of the metal surface in SPR based techniques, which is good for the immobilization of HIV related antigens used for the diagnosis of HIV infection.Type: GrantFiled: August 27, 2007Date of Patent: April 17, 2012Assignee: CMED Technologies Ltd.Inventors: Zhong Chen, Ning Liu, Yancun Li
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Patent number: 8158440Abstract: This invention discloses using SPR technology to simultaneously and quantitatively measure the concentrations of thyroid hormones and related antibodies in a serum sample, which can be used to evaluate thyroid functions and to diagnose thyroid diseases. It also discloses an efficient formula to make a mixed SAM that can greatly enhance the immobilization ability of the metal surface in SPR based techniques, which is good for the immobilization of relevant antibodies and antigens used for the detection of respective thyroid hormones and related antibodies in a serum sample.Type: GrantFiled: September 17, 2007Date of Patent: April 17, 2012Assignee: CMED Technologies Ltd.Inventors: Zhong Chen, Ning Liu, Yancun Li
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Patent number: 8160411Abstract: A diffractive beam expander (50) comprises an input grating (10), a crossed grating (20), and an output grating (30) implemented on a planar transparent substrate (7). The crossed grating (20) comprises a plurality of diffractive features (23) arranged along the lines of a first set of parallel lines (25) and along the lines of a second set of parallel lines (26) such that the lines (25) of the first set are parallel to the lines (26) of the second set. The lines of the first set have a first grating period and the lines of the second set have a second grating period. A light beam (B1) coupled into the substrate (7) by the input grating (10) impinges on the crossed grating (20) at a first location (EC1) and further locations (EC2). Interaction at the first location (EC1) provides several sub-beams (S00, S01, S10) which propagate in different directions.Type: GrantFiled: December 28, 2006Date of Patent: April 17, 2012Assignee: Nokia CorporationInventors: Tapani Levola, Pasi Saarikko
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Patent number: 8158409Abstract: A microfluidically-controlled transmission mode nanoscal surface plasmonics sensor device comprises one or more arrays of aligned nanochannels in fluid communication with inflowing and outflowing fluid handling manifolds that control the flow of fluid through the array(s). Fluid comprising a sample for analysis is moved from an inlet manifold, through the nanochannel array, and out through an exit manifold. The fluid may also contain a reagent used to modify the interior surfaces of the nanochannels, and/or a reagent required for the detection of an analyte.Type: GrantFiled: January 11, 2010Date of Patent: April 17, 2012Assignees: CFD Research Corporation, University of PittsburghInventors: Jianjun Wei, Sameer Singhal, David Hennessey Waldeck, Matthew Joseph Kofke
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Patent number: 8158343Abstract: This invention discloses using SPR technology to simultaneously and qualitatively detect the presence of respiratory tract viruses-related immunological markers in a serum sample, which can be used for the diagnosis of respiratory tract infections. It also discloses an efficient formula to make a mixed SAM that can greatly enhance the immobilization ability of the metal surface in SPR based techniques, which is good for the immobilization of representative antigens used to detect the respective respiratory tract viruses-related immunological markers (antibodies) in blood for the diagnosis of respiratory tract infections.Type: GrantFiled: September 12, 2007Date of Patent: April 17, 2012Assignee: CMED Technologies Ltd.Inventors: Zhong Chen, Ning Liu, Yancun Li
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Patent number: 8160114Abstract: A single-mode, etched facet distributed Bragg reflector laser includes an AlGaInAs/InP laser cavity, a front mirror stack with multiple Fabry-Perot elements, a rear DBR reflector, and a rear detector. The front mirror stack elements and the rear reflector elements include input and output etched facets, and the laser cavity is an etched ridge cavity, all formed from an epitaxial wafer by a two-step lithography and CAIBE process.Type: GrantFiled: October 20, 2010Date of Patent: April 17, 2012Assignee: BinOptics CorporationInventors: Alex A. Behfar, Kiyofumi Muro, Cristian B. Stagarescu, Alfred T. Schremer
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Patent number: 8153445Abstract: This invention discloses using SPR technology to simultaneously and qualitatively detect the presence of infectious agent related antibodies and/or antigens in a serum sample, which can be used to screen for infectious agents in blood. It also discloses an efficient formula to make a mixed SAM that can greatly enhance the immobilization ability of the metal surface in SPR based techniques, which is good for the immobilization of relevant antigens and antibodies used for the screening of infectious agents in blood.Type: GrantFiled: July 31, 2007Date of Patent: April 10, 2012Assignee: CMED Technologies Ltd.Inventors: Zhong Chen, Ning Liu, Yancun Li
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Patent number: 8149493Abstract: In a general aspect, a device includes a substrate, a light transmission formed on a top surface of the substrate, a first contact, and a second contact. The light transmission structure includes a first doped region; a second doped region doped oppositely to the first region; a lateral junction between a part of the first doped region and a part of the second doped region, the lateral junction oriented substantially perpendicular to the top surface of the substrate; and a vertical junction between a part of the first doped region and a part of the second doped region, the vertical junction oriented substantially parallel to the top surface of the substrate. The first contact is in electrical contact with the first region and the second contact is in electrical contact with the second region.Type: GrantFiled: September 1, 2009Date of Patent: April 3, 2012Assignee: Sifotonics Technologies (USA) Inc.Inventor: Liang Chen
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Patent number: 8150219Abstract: In an optical interferometer, polarization dependence attributable to the optical path difference has conventionally been eliminated by inserting a half-wave plate at the center of the interferometer. However, light induced by polarization coupling produced in directional couplers used in the optical interferometer causes interference having different interference conditions from those of the normal light. Polarization rotators that effect any one of 90° rotation and ?90° rotation of all states of polarization of incoming light are inserted in the optical interferometer, and thereby the interference conditions of light induced by polarization coupling are made the same as those of the normal light. Each of the polarization rotators is implemented by using two half-wave plates and by varying an angle of combination of these half-wave plates. Alternatively, each of the polarization rotators is implemented through a combination of one half-wave plate and a waveguide having birefringence properties.Type: GrantFiled: December 27, 2007Date of Patent: April 3, 2012Assignee: Nippon Telegraph and Telephone CorporationInventors: Yusuke Nasu, Manabu Oguma, Yasuaki Hashizume, Yasuyuki Inoue, Hiroshi Takahashi, Kuninori Hattori, Toshikazu Hashimoto, Yohei Sakamaki
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Patent number: 8139904Abstract: A method of implementing optical deflection switching includes directing a tuning operation at a specific region of coupled optical resonators coupled to an input port, a first output port and a second output port, the coupled optical resonator including a plurality of cascaded unit cells; wherein the tuning operation interrupts a resonant coupling between one or more of the unit cells of the coupled resonators so as to cause an input optical signal from the input port to be directed from the first output port to the second output port.Type: GrantFiled: September 18, 2007Date of Patent: March 20, 2012Assignee: International Business Machines CorporationInventors: William M. Green, Fengnian Xia, Yurii Vlasov
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Patent number: 8139906Abstract: Provided is an optical wiring module. The optical wiring module includes a light source mounted on a surface of a substrate, a metal optical waveguide coupled to a transverse magnetic mode of light emitted from the light source and using a long-range surface palsmon polariton, and a photodetector. The optical wiring module has a simple structure enabling it to be further miniaturized and its yield to be increased.Type: GrantFiled: September 17, 2007Date of Patent: March 20, 2012Assignee: Electronics and Telecommunications Research InstituteInventors: Myung Hyun Lee, Jung Jin Ju, Sun Tak Park, Jin Tae Kim, Min Su Kim, Seung Koo Park
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Patent number: 8135251Abstract: An opto-electric hybrid board in which a new alignment mark having an identifying mark that is easy to recognize is formed in addition to a conventional alignment mark, and a method of manufacturing the opto-electric hybrid board. The opto-electric hybrid board includes an optical waveguide portion 2, an electric circuit board 1, and optical elements mounted on this electric circuit board 1. The optical waveguide portion 2 includes a translucent under cladding layer 21, a linear core 22 for an optical path, first alignment marks 24 positioned relative to end portions of this core 22, and an over cladding layer 23 for covering the above-mentioned core 22 and the first alignment marks 24. The electric circuit board 1 includes second alignment marks 15 for positioning of the optical elements and formed on a surface thereof on which the optical elements are mounted.Type: GrantFiled: November 24, 2009Date of Patent: March 13, 2012Assignee: Nitto Denko CorporationInventor: Masayuki Hodono
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Patent number: 8128234Abstract: A position adjustment device for an integration rod includes a fixed plate, two resilient members, and two adjusting screws. The first resilient member is positioned between the fixed plate and the rod for exerting an elastic force on the rod in a first direction, and the second resilient member is positioned between the fixed plate and the rod for exerting an elastic force on the rod in a second direction different from the first direction. The first adjusting screw is inserted through the part of the housing and has a first end surface that presses against one side surface of the rod opposite the first resilient member. The second adjusting screw is inserted through the part of the housing and has a second end surface that presses against one side surface of the rod opposite the second resilient member. The first and the second end surface are arc surfaces.Type: GrantFiled: May 1, 2009Date of Patent: March 6, 2012Assignee: Coretronic CorporationInventors: Chien-Chang Huang, Yung-Chuan Tseng
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Patent number: 8126306Abstract: A two-dimensional photonic crystal according to the present invention includes a first layer having a dielectric first layer slab in which first layer holes having a refractive index lower than that of the first layer slab are arranged cyclically, a second layer formed on the first layer, including dielectric columns having a refractive index higher than the air arranged in the air with the same cycle as the first layer hole, and a third layer having a dielectric third layer slab in which third layer holes having a refractive index lower than that of the third layer slab are arranged cyclically. Thus, it is possible to obtain the two-dimensional photonic crystal that can create a wider complete PBG than before regardless of the polarization of light and can be manufactured easily.Type: GrantFiled: March 25, 2008Date of Patent: February 28, 2012Assignee: Kyoto UniversityInventors: Susumu Noda, Takashi Asano, Keita Mochizuki
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Patent number: 8119350Abstract: The present invention discloses using SPR technology to detect MM related genomic imbalances in bone marrow samples. An efficient formula to make a mixed SAM that can greatly enhance the immobilization ability of the metal surface in SPR based techniques, which is good for the immobilization of DNA markers used for the identification of MM related genomic imbalances in bone marrow samples is also disclosed.Type: GrantFiled: August 23, 2007Date of Patent: February 21, 2012Assignee: CMED Technologies LtdInventors: Zhong Chen, Ning Liu
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Patent number: 8116602Abstract: The present invention includes a device and a method for fabricating a device that is an optical power mode transformer that accepts light in a mode transformation direction where the transformer is attached to or embedded in a semiconductor microchip and includes a first single or multimode optical input (SM) waveguide including a first core surrounded by a cladding, and, a second high contrast index grade (HC) waveguide including a second core having a tapered region and surrounded by said cladding, a portion of the tapered region of the core being embedded within the first optical input waveguide region with an embedded length sufficient for efficient light transfer from the first input waveguide to the said second waveguide wherein the embedded portion of the tapered region is fully surrounded by the first input waveguide along an axial and radial cross-section of the second waveguide in the mode transformation direction.Type: GrantFiled: April 2, 2002Date of Patent: February 14, 2012Assignee: Infinera CorporationInventors: Brent E. Little, Saitak Chu
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Patent number: 8114682Abstract: This invention discloses using SPR technology to simultaneously and quantitatively measure the concentrations of different sex hormones in a serum sample, which can be used to evaluate different clinical situations. It also discloses an efficient formula to make a mixed SAM that can greatly enhance the immobilization ability of the metal surface in SPR based techniques, which is good for the immobilization of relevant antibodies used for the detection of representative sex hormones in a serum sample.Type: GrantFiled: September 17, 2007Date of Patent: February 14, 2012Assignee: CMED Technologies Ltd.Inventors: Zhong Chen, Ning Liu, Yancun Li
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Patent number: 8111958Abstract: An optical waveguide with photoelectric conversion element includes an under-cladding layer and an over-cladding layer including a thick portion having a large thickness and a thin portion having a small thickness. The optical waveguide with photoelectric conversion element is bendable in a region including the thin portion in such a direction that the under-cladding layer faces inward. This makes it possible to arrange a photoelectric conversion element of each of the optical waveguides with photoelectric conversion element and its associated circuit on the back side of a display panel of an optical touch panel, thereby reducing the size of a frame surrounding a coordinate input region of the optical touch panel and the difference in level on the surface of the frame and its vicinity.Type: GrantFiled: March 15, 2010Date of Patent: February 7, 2012Assignee: Nitto Denko CorporationInventors: Hajime Nishio, Noriyuki Juni
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Patent number: 8110408Abstract: This invention discloses using SPR technology to simultaneously and quantitatively measure the concentrations of diabetes related immunological makers in a serum sample, which can be used to diagnose and/or early diagnose diabetes as well as to predict the onset risk of diabetes in first-degree relatives. It also discloses an efficient formula to make a mixed SAM that can greatly enhance the immobilization ability of the metal surface in SPR based techniques, which is good for the immobilization of relevant antigens and antibodies used for the detection of respective diabetes related immunological makers in a serum sample.Type: GrantFiled: September 17, 2007Date of Patent: February 7, 2012Assignee: CMED Technologies Ltd.Inventors: Zhong Chen, Ning Liu, Yancun Li
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Patent number: 8110409Abstract: This invention discloses using SPR technology to simultaneously and quantitatively measure the concentrations of different liver fibrosis-associated serum biomarkers in a serum sample, which can be used for the diagnosis of liver fibrosis. It also discloses an efficient formula to make a mixed SAM that can greatly enhance the immobilization ability of the metal surface in SPR based techniques, which is good for the immobilization of relevant antibodies used for the detection of liver fibrosis-associated serum biomarkers for the diagnosis of liver fibrosis.Type: GrantFiled: September 12, 2007Date of Patent: February 7, 2012Assignee: CMED Technologies Ltd.Inventors: Zhong Chen, Ning Liu, Yancun Li
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Patent number: 8111965Abstract: A waveguide and resonator are formed on a lower cladding of a thermo optic device, each having a formation height that is substantially equal. Thereafter, the formation height of the waveguide is attenuated. In this manner, the aspect ratio as between the waveguide and resonator in an area where the waveguide and resonator front or face one another decreases (in comparison to the prior art) thereby restoring the synchronicity between the waveguide and the grating and allowing higher bandwidth configurations to be used. The waveguide attenuation is achieved by photomasking and etching the waveguide after the resonator and waveguide are formed. In one embodiment the photomasking and etching is performed after deposition of the upper cladding. In another, it is performed before the deposition. Thermo optic devices, thermo optic packages and fiber optic systems having these waveguides are also taught.Type: GrantFiled: May 2, 2011Date of Patent: February 7, 2012Assignee: Micron Technology, Inc.Inventors: Guy T. Blalock, Howard E. Rhodes, Vishnu K. Agarwal, Gurtej Singh Sandhu, James S. Foresi, Jean-Francois Viens, Dale G. Fried
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Patent number: 8098965Abstract: A novel electroabsorption modulator based on tuning the Fermi level relative to mid-gap states in a semiconductor. The modulator includes a semiconductor waveguide that has an input port and an output port. Between the input port and the output port is a section of the waveguide that functions as an electroabsorptive region. Adjacent to the electroabsorptive region are electrical contacts. In operation by adjusting voltages on the electrical contacts, the quasi-Fermi level in the electroabsorptive region of the semiconductor waveguide is brought above or below mid band-gap electronic states. As these states transition between occupancy and vacancy, the absorption coefficient for optical radiation in the electroabsorptive region of the semiconductor changes.Type: GrantFiled: December 3, 2009Date of Patent: January 17, 2012Assignee: University of WashingtonInventors: Tom Baehr-Jones, Michael J. Hochberg
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Patent number: 8092068Abstract: Optical assembly includes a generally planar light output surface located on a first major plane, and a generally planar second surface located on a second major plane approximately parallel to the first major plane and superimposed thereon. Both the light output surface and the second surface have respective first and second patterns of well defined optical elements that are quite small in relation to the length and width of the optical assembly. The optical elements of the first pattern have an apex angle formed by a first sloped surface that is larger in an area closer to at least one light input edge of the optical assembly and smaller in another area further away from the light input edge.Type: GrantFiled: February 3, 2009Date of Patent: January 10, 2012Assignee: Rambus International Ltd.Inventors: Jeffery R. Parker, Timothy A. McCollum, Robert M. Ezell
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Publication number: 20120002932Abstract: The present invention relates to an optical waveguide containing: a core formed by curing (A) a fluorine-containing polyarylene prepolymer having a crosslinkable functional group; and a cladding formed by curing (I) a curable composition containing (B) a compound having a molecular weight of 140 to 5,000, having a crosslinkable functional group and having no fluorine atom, and (A) a fluorine-containing polyarylene prepolymer.Type: ApplicationFiled: September 16, 2011Publication date: January 5, 2012Applicant: Asahi Glass Company, LimitedInventors: Shotaro TAKENOBU, Takeshi Eriguchi, Shunsuke Yokotsuka
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Patent number: 8090226Abstract: An optical waveguide device includes: a substrate having an electro-optical effect; an optical waveguide section formed on the substrate; and a plurality of modulating electrodes for modulating optical waves propagating in the optical waveguide section. The optical waveguide section branches into two parts in the propagating direction of the optical waves, thus forming the two main optical waveguides, and each of the main optical waveguides branches into two parts in the propagating direction of the optical waves, thus forming the two sub optical waveguides. The two main optical waveguides constitute a main Mach-Zehnder type optical waveguide, and the two sub optical waveguides are incorporated into the main Mach-Zehnder type optical waveguide to constitute a sub Mach-Zehnder type optical waveguide. A heat conduction suppressing zone is defined on a portion of the substrate disposed between two opposite sub Mach-Zehnder type optical waveguides.Type: GrantFiled: March 27, 2008Date of Patent: January 3, 2012Assignee: Sumitomo Osaka Cement Co., Ltd.Inventors: Shingo Mori, Tsutomu Saitou, Toru Sugamata
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Patent number: 8078018Abstract: Some embodiments include communication methods, methods of forming an interconnect, signal interconnects, integrated circuit structures, circuits, and data apparatuses. In one embodiment, a communication method includes accessing an optical signal comprising photons to communicate information, accessing an electrical signal comprising electrical data carriers to communicate information, and using a single interconnect, communicating the optical and electrical signals between a first spatial location and a second spatial location spaced from the first spatial location.Type: GrantFiled: November 29, 2010Date of Patent: December 13, 2011Assignee: Micron Technology, Inc.Inventor: Chandra Mouli
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Patent number: 8076246Abstract: A method comprises a first multilayer body forming step of forming a first multilayer body on a first cladding layer, the first multilayer body including a core layer and a first polishing stop layer in order from the first cladding layer side; a first multilayer body patterning step of pattering the first multilayer body, so as to expose the first cladding layer about the patterned first multilayer body; a second multilayer body forming step of forming a second multilayer body on the exposed first cladding layer and patterned first multilayer body, the second multilayer body including a second cladding layer and a second polishing stop layer in order from the first cladding layer side; and a removing step of polishing away a part of the second multilayer body formed on the first multilayer body.Type: GrantFiled: January 26, 2009Date of Patent: December 13, 2011Assignee: TDK CorporationInventors: Kosuke Tanaka, Koji Shimazawa
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Patent number: 8068707Abstract: A lumenaire for mixing and emitting light from multiple light sources which has at least one first light source of a particular type and at least one second light source of a differing type. There is an optical system which includes at least one individual light collecting optical element at least partially surrounding each light source. There is a substantially planar light guide that receives and transports the light from each of the individual optical elements and optically mixes and emanates the light from both types of light sources simultaneously, through a common surface of the planar light guide. The planar light guide is segmented and the segmented sections are angularly disposed, in section in relationship to each other and the individual optical elements project light into at least one of the segments.Type: GrantFiled: October 21, 2009Date of Patent: November 29, 2011Inventor: Jerome H. Simon
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Patent number: 8062900Abstract: A microplate for use within an interrogation system and a method of using the microplate are disclosed. The microplate contains within the bottom of each well, an optical waveguide grating based sensor. Approximate to each sensor is a mask having an aperture of predetermined size. The aperture regulates the light that enters and exits the sensor upon successive scans and ensures repeatable readings from the sensor. In an extended embodiment, a method of detection is disclosed that utilizes a launch and receive system while employing the aforementioned microplate.Type: GrantFiled: May 17, 2006Date of Patent: November 22, 2011Assignee: Corning IncorporatedInventor: Robert A. Modavis
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Patent number: 8059924Abstract: Photonic detection systems and methods are shown. A flow through photonic membrane is provided with pores which are distributed along multiple regions. The pores of one region have walls to which a first type of target specific anchor can be attached, while pores of another region have walls to which a second type of target specific anchor can be attached. An additional region of pores without anchors can be provided, so that optical detection occurs differentially. A stack of photonic membranes is also provided. The diameter of the pores of one photonic membrane is larger than the diameter of the pores of another photonic membrane, thus allowing also determination of the size of a target organism flown through the stack of membranes.Type: GrantFiled: September 8, 2008Date of Patent: November 15, 2011Assignee: Lawrence Livermore National Security, LLCInventors: Sonia E. Letant, Tiziana C. Bond
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Patent number: 8053166Abstract: Embodiments in accordance with the present invention provide waveguide structures and methods of forming such structures where core and laterally adjacent cladding regions are defined. Some embodiments of the present invention provide waveguide structures where core regions are collectively surrounded by laterally adjacent cladding regions and cladding layers and methods of forming such structures.Type: GrantFiled: September 3, 2009Date of Patent: November 8, 2011Assignees: Sumitomo Bakelite Co. Ltd., Promerus, LLC.Inventors: Koji Choki, Tetsuya Mori, Ramakrishna Ravikiran, Makoto Fujiwara, Keizo Takahama, Kei Watanabe, Hirotaka Nonaka, Yumiko Otake, Andrew Bell, Larry Rhodes, Dino Amoroso, Mutsuhiro Matsuyama
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Patent number: 8050524Abstract: An optical device includes an electrooptic crystal substrate, a polarization-inverted region formed in a part of the electrooptic crystal substrate, an optical waveguide formed in the electrooptic crystal substrate, and a groove for relaxing stress disposed between a domain wall of the polarization-inverted region and the optical waveguide.Type: GrantFiled: September 25, 2009Date of Patent: November 1, 2011Assignee: Fujitsu LimitedInventor: Takashi Shiraishi
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Publication number: 20110249938Abstract: An apparatus includes a crystalline inorganic semiconductor substrate. A planar optical waveguide core is located over the substrate such that a first length of the planar optical waveguide core is directly on the substrate. A regular array of optical scattering structures is located within a second length of the planar optical waveguide core. A cavity is located in the substrate between the regular array and the substrate.Type: ApplicationFiled: April 7, 2010Publication date: October 13, 2011Applicant: Alcatel-Lucent USA, IncorporatedInventors: Long Chen, Liming Zhang, Christopher Doerr, Nicolas Dupuis
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Patent number: 8019186Abstract: The invention relates to a photonic crystal circuit comprising a guide produced in a photonic crystal membrane on the surface of a substrate and a mode adapter coupled to said guide, wherein the membrane includes a central point constituting the mode adapter having a section gradient as termination of said guide, said point being suspended so as to allow the propagation of modes in a symmetrical manner. It also relates to an optical system incorporating said circuit coupled to an optical fiber.Type: GrantFiled: July 8, 2009Date of Patent: September 13, 2011Assignee: ThalesInventors: Sylvain Combrie, Nguyen Vy Quynh Tran, Alfredo De Rossi
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Patent number: 8014638Abstract: A signal transmission device includes a base plate and a photoelectric converter-sealed member. The base plate is structured to have an optical waveguide formed internally, an opening formed to expose the optical waveguide, and a mounting surface provided to allow an electronic part to be mounted thereon. The photoelectric converter-sealed member is placed in the opening of the base plate to include a photoelectric conversion module for making conversion between an electric signal and a light signal and provided by sealing at least the photoelectric conversion module with a predetermined material to expose at least part of a wiring from the photoelectric conversion module on a substantially identical plane with an opening end face of the opening of the base plate. The opening is either a recess or a through hole. This arrangement desirably ensures the higher-speed transmission of electric signals between the photoelectric conversion module and the LSI package.Type: GrantFiled: March 30, 2007Date of Patent: September 6, 2011Assignee: The University of TokyoInventors: Yoshiaki Nakano, Xueliang Song, Shurong Wang
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Publication number: 20110205617Abstract: A photonic crystal structure that is composed of a host media having periodic dielectric holes disposed in the media at a period of ah. Each dielectric hole has a radius rh. The host media has an absolute refractive index expressed as |nh| that is less than 0.2. The photonic crystal structure has at least one reflection minimization layer disposed at an air/photonic crystal interface. The reflection minimization layer has periodic dielectric holes disposed therein at a period am with each dielectric hole having a radius rm such that ah=am and rm>rn and a beam steerable device including the photonic crystal structure. The device having a scanning rate of larger than 1 KHz and a scanning angle up to ±25 degrees.Type: ApplicationFiled: February 19, 2010Publication date: August 25, 2011Applicants: Toyota Motor Engineering and Manufacturing North America, Inc., The Trustees Of The University Of PennsylvaniaInventors: Hideo IIZUKA, Nader ENGHETA
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Patent number: 7998413Abstract: Aspects of the invention can be an inexpensive biosensor capable of measuring a number of samples in a short time, and suitable for only one-time use (expendable). The biosensor according to the invention can include a light transmissive substrate, a probe fixing region provided on one face of the light transmissive substrate, a light emitting element provided on the other face of the substrate that irradiates the probe fixing region from the back side thereof, and a light receiving element provided on the other face of the substrate that detects the light intensity of the reflected light from the back side of the probe fixing region. Thereby, a biosensor formed in one substrate can be obtained.Type: GrantFiled: July 1, 2008Date of Patent: August 16, 2011Assignee: Seiko Epson CorporationInventors: Hitoshi Fukushima, Takayuki Kondo
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Publication number: 20110194171Abstract: An optical wavelength conversion element includes: a wavelength conversion waveguide that has a periodic polarization reversal structure having alternately and cyclically formed domains of which polarization directions are inverted, that guides light as a fundamental wave corresponding to the periodic polarization reversal structure, and performs a wavelength conversion of the guided fundamental wave; a first clad that is made of a dielectric having a refractive index lower than that of the wavelength conversion waveguide and is provided in contact with the domains; a second clad that is made of a dielectric having a refractive index lower than that of the wavelength conversion waveguide and is provided in contact with the domains such that the second clad is opposed to the first clad film; a first conducting unit that electrically connects the domains in parallel via the first clad; and a second conducting unit that electrically connects the domains in parallel via the second clad.Type: ApplicationFiled: September 17, 2009Publication date: August 11, 2011Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Yosuke Akino, Yoshihito Hirano, Takayuki Yanagisawa, Shuhei Yamamoto, Tsutomu Nagatsuka, Toshiyuki Ando
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Publication number: 20110194572Abstract: A composite optical waveguide 1 includes a first optical waveguide 9 comprising a silica-based core and a second optical waveguide 11 comprising an Si-based core. The second optical waveguide 11 is joined to the first optical waveguide 9. The length of the first optical waveguide 9 corresponds to a permissible propagation loss of the second optical waveguide 11. The second optical waveguide 11 includes a sharply curved portion 13 having a radius smaller than the minimum bend radius of the first optical waveguide 9.Type: ApplicationFiled: January 28, 2011Publication date: August 11, 2011Inventors: HIROYUKI YAMAZAKI, HIROHITO YAMADA
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Patent number: 7995891Abstract: An arrangement includes a photonic band-gap assembly comprising at least one input wave guide and at least one output wave guides, and at least one routing element responsive to signals to selectively route a signal from the input wave guide to one or more of the output wave guides.Type: GrantFiled: October 30, 2009Date of Patent: August 9, 2011Inventors: Muriel Y. Ishikawa, Edward K. Y. Jung, Clarence T. Tegreene
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Patent number: 7991249Abstract: New circuit architecture for electro-optic modulator based on free-carrier dispersion effect is invented, in which the waveguide capacitor of the modulator is embed in the circuits and physically layout together with transistors, the switching of the modulator occurs in transistors, and as the result, the electro-optical modulation occurs in the waveguide capacitor. The invented modulator is not one physical device, it is actually a circuit. Several circuit design techniques are imported, leading to several new modulator circuits that have very high operation speed and very small power consumption. Several new waveguide capacitor structures are also invented that allow high efficient modulator circuits to be built.Type: GrantFiled: October 18, 2010Date of Patent: August 2, 2011Inventor: Bing Li
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Patent number: 7990527Abstract: An exemplary refractive-index sensor includes a photonic crystal microcavity structure, a light source, and a detector. The photonic crystal microcavity structure includes a photonic crystal layer having first holes and a second hole defined therein. The first holes are arranged in a regular pattern of staggered parallel rows. The second hole is at an approximate center of the regular pattern, instead of a first hole. A diameter of the second hole is different from that of the first holes. The first holes at each of opposite ends of the row having the second hole are omitted, thereby defining an input waveguide and an output waveguide. The light source is adjacent to the input waveguide. The detector is adjacent to the output waveguide.Type: GrantFiled: June 20, 2008Date of Patent: August 2, 2011Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Xiao-Ling Wang, Guo-Fan Jin, Zhen-Feng Xu, Jun Zhu
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Patent number: 7991257Abstract: Embodiments of this invention include composite articles having specific optical properties. In one embodiment of this invention, a composite comprises high and low refractive index light transmitting material and surface relief features. In further embodiments, the composite comprises volumetric dispersed phase domains that may be asymmetric in shape. In one embodiment of this invention, the composite is an optical film providing light collimating features along two orthogonal planes perpendicular to the surface of the film. In another embodiment, the composite has improved optical, thermal, mechanical, or environmental properties. In further embodiments of this invention, the composite is manufactured by optically coupling or extruding two or more light transmitting materials, and forming inverted light collimating surface relief features or light collimating surface relief features.Type: GrantFiled: September 12, 2008Date of Patent: August 2, 2011Assignee: Fusion Optix, Inc.Inventor: Zane Coleman
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Patent number: 7983514Abstract: An arrangement includes a photonic band-gap assembly comprising at least one input wave guide and at least one output wave guides, and at least one routing element responsive to signals to selectively route a signal from the input wave guide to one or more of the output wave guides.Type: GrantFiled: April 12, 2010Date of Patent: July 19, 2011Inventors: Muriel Y. Ishikawa, Edward K. Y. Jung, Clarence T. Tegreene
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Patent number: 7978941Abstract: The new single mode circuit (SMC) architecture is invented for photonic integrated circuits (PIC). This architecture allows using multimode waveguides or structures to construct a single mode operated PIC. The multimode sections used in such SMC based PIC possess strong lateral confinement so that the PIC can have high circuit density and high optical performance at the same time. A parallel mode converter structure is also invented here. Based on this parallel mode converter, a low loss optical splitter can be constructed for high index contrast waveguide system.Type: GrantFiled: January 12, 2010Date of Patent: July 12, 2011Inventor: Bing Li
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Patent number: RE43226Abstract: An optical multiplexing device includes an optical element having at least one set of diffractive elements, and an optical reflector. The reflector routes, between first and second optical ports, that portion of an optical signal transmitted by the diffractive element set. The diffractive element set routes, between first and multiplexing optical ports, a portion of the optical signal that is diffracted by the diffractive element set. More complex optical multiplexing functionality(ies) may be achieved using additional sets of diffractive elements, in a common optical element (and possibly overlaid) or in separate optical elements with multiple reflectors. Separate multiplexing devices may be assembled with coupled ports for forming more complex devices. The respective portions of an optical signal transmitted by and reflected/diffracted from the diffractive element set typically differ spectrally.Type: GrantFiled: May 29, 2009Date of Patent: March 6, 2012Assignee: Steyphi Services DE LLCInventors: Dmitri Iazikov, Thomas W. Mossberg, Christoph M. Greiner