Particular Coupling Structure Patents (Class 385/39)
  • Patent number: 8358892
    Abstract: Optical elements (light sources 16 or photodetectors 18) are arranged in a two-dimensional array, and the relative positional relationship between the optical elements and optical waveguides 12 is defined such that optical waveguides 12 extend between the optical elements in the two-dimensional array substantially parallel to substrate 19 for increased parallelism. Micromirrors 15 are disposed in respective optical waveguides 12 to bend light beams through 90 degrees to realize a highly efficient optical coupling between the optical elements and optical waveguides 12. The optical waveguides are stacked in multiple stages, and light beams are lead to the optical waveguides in the multiple stacks through micromirrors 15 across the stacked plane of the optical waveguides, thereby realizing parallel connection between the two-dimensional array of optical elements and a two-dimensional array of optical waveguides.
    Type: Grant
    Filed: February 28, 2006
    Date of Patent: January 22, 2013
    Assignees: NEC Corporation, Tokyo Institute of Technology
    Inventors: Mikio Oda, Hikaru Kouta, Kaichirou Nakano, Hisaya Takahashi, Kohroh Kobayashi
  • Patent number: 8355604
    Abstract: A silicon-on-insulator device has a waveguide having a carrier wafer layer, a buffer layer, a guiding layer, and a cladding layer. The silicon-on-insulator is additionally provided with a polarizing arrangement deposited on a predetermined portion of the waveguide, the polarizing arrangement being provided with a bottom metal layer, a dielectric gap, and a top metal layer, the bottom metal layer being deposited on the cladding layer. A protection layer formed of SiO2 overlies the top metal layer. The polarizing arrangement attenuates preferentially the electromagnetic energy that is propagated in the waveguide in the TM transmission mode. There is formed a gap plasmon-polariton (GPP) confined to the dielectric gap, the dielectric gap having a high optical loss characteristic. In accordance with a method aspect, there are provided the steps of forming a silicon-on-insulator waveguide arrangement and depositing a polarizer structure that absorbs the electromagnetic energy in the TM transmission mode.
    Type: Grant
    Filed: November 3, 2009
    Date of Patent: January 15, 2013
    Assignee: Wayne State University
    Inventor: Ivan Avrutsky
  • Patent number: 8355608
    Abstract: Apparatus and method for in-line cladding-light dissipation including forming a light-scattering surface on the optical fiber such that the light-scattering surface scatters cladding light away from the optical fiber. In some embodiments, the apparatus includes an optical fiber having a core and a first cladding layer that surrounds the core, wherein a first portion of the optical fiber has a light-scattering exterior surface. Some embodiments further include a transparent enclosure, wherein the transparent enclosure includes an opening that extends from a first end of the transparent enclosure to a second end of the transparent enclosure, and wherein at least the first portion of the optical fiber is located within the opening of the transparent enclosure. Some embodiments include a light-absorbing housing that surrounds the optical fiber and the transparent enclosure and is configured to absorb the light scattered away from the optical fiber by the light-scattering exterior surface.
    Type: Grant
    Filed: June 3, 2010
    Date of Patent: January 15, 2013
    Assignee: Lockheed Martin Corporation
    Inventor: Yongdan Hu
  • Patent number: 8351743
    Abstract: A suspension board with circuit includes a metal supporting board; an insulating base layer formed on the metal supporting board; a conductive pattern formed on the insulating base layer; an insulating cover layer formed on the insulating base layer so as to cover the conductive pattern; and an optical waveguide. The optical waveguide is provided on the metal supporting board separately from the insulating base layer, the conductive pattern, and the insulating cover layer.
    Type: Grant
    Filed: July 6, 2009
    Date of Patent: January 8, 2013
    Assignee: Nitto Denko Corporation
    Inventors: Toshiki Naito, Jun Ishii
  • Patent number: 8351745
    Abstract: A 2-to-1 POF optical coupler, a bi-directional link that employs the coupler, and methods for performing 2-to-1 optical coupling are provided, wherein the 2-to-1 POF optical coupler is configured to provide a carefully-selected amount of cross-sectional overlap at the interface between the end face of a main POF or POF pigtail and the end face of the coupler. The amount of overlap is selected to ensure that optical coupling losses are reduced and optical efficiency is increased in both directions in a bi-directional optical communications links. Consequently, signal integrity is improved, limitations on link length are relaxed, and overall link performance is improved while, at the same time, overall link costs are reduced.
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: January 8, 2013
    Assignee: Avago Technologies Fiber IP (Singapore) Pte. Ltd.
    Inventor: Nikolaus W. Schunk
  • Patent number: 8351741
    Abstract: A method of detecting fluorescence/absorbance/luminescence from 24-well, 48-well, 96-well, 384-well and 1536-well microplates and other sample containers. The sample is pumped into a waveguide. The waveguide efficiently gathers and guides the emission light to the end of the waveguide. The emission light exits the ends of the waveguide and is focused into a detector. To minimize background caused by the excitation light used for fluorescence, the excitation illuminates the waveguides at 90 degrees. To facilitate reuse, the waveguide assembly can be configured to be washed by an appropriate wash solution.
    Type: Grant
    Filed: June 29, 2009
    Date of Patent: January 8, 2013
    Assignee: Creatv MicroTech, Inc.
    Inventors: Cha-Mei Tang, Platte T. Amstutz, III
  • Publication number: 20130004124
    Abstract: An optical fiber connector includes a body and a photoelectric conversion module received in the body. The photoelectric conversion module includes a base, a light emitting unit, a light receiving unit, and a light coupling block. The light emitting unit and the light receiving unit are fixed on the base. The light coupling blocks are formed on the base and are arranged over the light emitting unit and the light receiving unit. The light emitting unit is configured for emitting light to the light coupling block in a first direction. The light coupling block is configured for reflecting the light from the light emitting unit to a second direction perpendicular to the first direction. The light receiving unit is configured for receiving light emitting from the light coupling block in a direction opposite to the first direction.
    Type: Application
    Filed: August 30, 2011
    Publication date: January 3, 2013
    Inventor: I-THUN LIN
  • Patent number: 8346037
    Abstract: 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: Grant
    Filed: February 1, 2010
    Date of Patent: January 1, 2013
    Assignee: KAIAM Corp.
    Inventors: Bardia Pezeshki, John Heanue
  • Patent number: 8346033
    Abstract: A method for producing the optical coupler includes mounting a first conversion element on an upper surface of a first terminal plate, mounting a second conversion element on an upper surface of a second terminal plate, supplying a translucent primary mold resin in a fluidized state to the upper surfaces of the first terminal plate and the second terminal plate such that the first conversion element and the second conversion element are covered with the primary mold resin, curing the primary mold resin while inverting vertically the first terminal plate and the second terminal plate to retain the primary mold resin in a state in which the primary mold resin hangs from the first terminal plate and the second terminal plate, and covering a surface of the primary mold resin with a secondary mold resin having a refractive index lower than that of the primary mold resin.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: January 1, 2013
    Assignee: OMRON Corporation
    Inventor: Tetsuro Kubota
  • Patent number: 8346036
    Abstract: A confocal optical system comprising a scanning fiber is provided. The scanning fiber is a single-mode fiber of which a first end is shaped as a curved surface. The scanning fiber transmits illumination light to the first end. The illumination light is emitted toward an observation area. The illumination light emanates from the first end. The illumination light emanates from the first end striking a target area within the observation area. The first end receives at least one of reflected light and fluorescence from the target area. The reflected light is the illumination light reflected from the target area. The fluorescence is induced at the target area by illumination from the illumination light.
    Type: Grant
    Filed: May 10, 2010
    Date of Patent: January 1, 2013
    Assignee: Hoya Corporation
    Inventor: Satoshi Karasawa
  • Patent number: 8340515
    Abstract: A method is provided for dispersion compensation of an optical signal communicated in an optical network. The method may include receiving an optical signal comprising a plurality of channels. The method may further include filtering at least one channel from the plurality of channels. The method may also include analyzing the at least one channel of the plurality of channels to measure optical dispersion in the at least one channel. The method may additionally include compensating for optical dispersion based on the measured dispersion.
    Type: Grant
    Filed: November 3, 2009
    Date of Patent: December 25, 2012
    Assignee: Fujitsu Limited
    Inventors: Alexander Umnov, Takao Naito, Niranjan Hanumanna
  • Patent number: 8340485
    Abstract: Disclosed are optical assemblies such as field-installable connectors having a laser-shaped optical fiber along with methods for laser-shaping the optical fiber. The field-installable connector includes a ferrule having front and rear opposed faces and at least one fiber bore defined longitudinally therethrough, a stub optical fiber having a distal end with a laser-shaped end face is disposed within the at least one fiber bore of the ferrule and extends a predetermined distance beyond the rear face of the ferrule, and an alignment feature operable for aligning the stub optical fiber with the field optical fiber. One method of laser-shaping the optical fiber includes rotating the optical fiber and sweeping a beam of a laser across the optical fiber and then essentially stopping the rotation of the optical fiber and sweeping the beam through the optical fiber to cut the same with a tapered and angled end face.
    Type: Grant
    Filed: May 29, 2009
    Date of Patent: December 25, 2012
    Assignee: Corning Cable Systems LLC
    Inventors: Jeffrey D. Danley, Joel C. Rosson
  • Patent number: 8340484
    Abstract: 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: Grant
    Filed: January 5, 2010
    Date of Patent: December 25, 2012
    Assignee: Board of Regents, The University of Texas System
    Inventors: Michael Vasilyev, Nikolai M. Stelmakh
  • Patent number: 8335408
    Abstract: In the sending and receiving of a signal through an optical waveguide, an unknown substrate connected to the optical waveguide can be recognized.
    Type: Grant
    Filed: October 7, 2008
    Date of Patent: December 18, 2012
    Assignee: Sony Corporation
    Inventors: Toshiyuki Sekiya, Ken Hayakawa, Kazuo Haraoka, Masaaki Hattori, Naoki Kaneko, Tetsujiro Kondo
  • Patent number: 8331008
    Abstract: Whispering gallery mode resonator based devices as photonic RF or microwave receivers.
    Type: Grant
    Filed: October 14, 2009
    Date of Patent: December 11, 2012
    Assignee: OEwaves, Inc.
    Inventors: Andrey B. Matsko, Anatoliy Savchenkov, David Seidel, Lute Maleki, Vladimir Ilchenko
  • Patent number: 8326101
    Abstract: An optimized planar optical router consisting of two stages performing stationary imaging between an input waveguide and a set of output waveguides has advantages of reduced size, larger number of channels and minimal loss variation in each passband. The new router is an optimized M×N imaging arrangement including two waveguide gratings and n waveguide lenses connected between the principal zones of the two gratings. The largest values of N are realized by using a combination of two techniques that increase N without increasing the size of the two gratings. One technique increases N for a given number n of lenses and, the other, increases n. In one embodiment, each lens produces a periodic sequence of passbands, all transmitted from a particular input waveguide to the same output waveguide, whereas, in a second embodiment, the above passbands are transmitted to different output waveguides. In both cases, the loss caused by secondary images is substantially reduced by including secondary lenses.
    Type: Grant
    Filed: July 13, 2010
    Date of Patent: December 4, 2012
    Inventor: Corrado Pietro Dragone
  • Patent number: 8326098
    Abstract: The invention concerns a gallery mode microdisc system for an electrically pumped optical source, the microdisc (1) being formed on one face of a substrate (2), the lower part of the microdisc being provided with an electrical contact referred to as the lower contact (4), the upper part of the microdisc being provided with an electrical contact referred to as the upper contact (6), the upper part of the microdisc being covered with a protective layer (3) of electrically insulating material, the central part (5) of the microdisc being electrically neutralized in order to prevent the passage of an electric current in said central part.
    Type: Grant
    Filed: March 9, 2009
    Date of Patent: December 4, 2012
    Assignees: Commissariat a l'Energie Atomique, Centre National de la Recherche Scientifique, Ecole Centrale de Lyon
    Inventors: Fabien Mandorlo, Jean-Marc Fedeli, Pedro Rojo-Romeo
  • Publication number: 20120301079
    Abstract: An optical assembly comprising (10) an optical coupler (12) defining a coupler first end section (18), a substantially opposed coupler second end section (20) and a coupler intermediate section (22) therebetween; a coupler passageway (24) extending in the coupler intermediate section (22) and also through at least a portion of the coupler second end section (20) and defining a passageway second end aperture (30) leading into the coupler passageway (24); a coupler peripheral surface (26) extending peripherally to the coupler passageway (24) in the coupler intermediate section (22); and a coupler lateral aperture (28) extending between the coupler passageway (24) and the coupler peripheral surface (26) in the coupler intermediate section (22). A first end optical fibre (14) is optically coupled to the optical coupler (12) in the coupler first end section (18) for allowing propagation of light between the optical coupler (12) and the first end optical fibre (14).
    Type: Application
    Filed: January 24, 2011
    Publication date: November 29, 2012
    Inventor: Francois Gonthier
  • Patent number: 8320723
    Abstract: This document discusses, among other things, a connector for an optical imaging probe that includes one or more optical fibers communicating light along the catheter. The device may use multiple sections for simpler manufacturing and ease of assembly during a medical procedure. Light energy to and from a distal minimally-invasive portion of the probe is coupled by the connector to external diagnostic or analytical instrumentation through an external instrumentation lead. Certain examples provide a self-aligning two-section optical catheter with beveled ends, which is formed by separating an optical cable assembly. Techniques for improving light coupling include using a lens between instrumentation lead and probe portions. Techniques for improving the mechanical alignment of a multi-optical fiber catheter include using a stop or a guide.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: November 27, 2012
    Assignee: Vascular Imaging Corporation
    Inventors: Michael J. Eberle, Kenneth N. Bates, William W. Morey
  • Publication number: 20120294567
    Abstract: Disclosed is a near field light generator, which makes it possible to generate the near field light in a preferable way. The generator includes: an optical waveguide having a clad, and a core, which is enclosed by the clad, and a refractive index of which is higher than that of the clad; a metal structural body that is shaped in substantially a plain plate, disposed at a position between the clad and the core; and a low refractive layer that is sandwiched between a partial surface of the core and the metal structural body. The electric field component of the light oscillates within an oscillation surface being substantially perpendicular to the partial surface. The width of the metal structural body in a direction substantially perpendicular to the oscillation surface tapers from the light coupling section of the optical waveguide towards the light emitting section of the optical waveguide.
    Type: Application
    Filed: August 30, 2010
    Publication date: November 22, 2012
    Inventor: Kou Osawa
  • Publication number: 20120287429
    Abstract: A resonator structure is disclosed. In some embodiments, the resonator structure may include a metal-insulator-metal waveguide comprising a first metal layer, a second metal layer, and an insulating layer between the first metal layer and the second metal layer, wherein the insulating layer comprises a resonating cavity. The resonator structure may further include a mirror formed in the resonating cavity, wherein the mirror comprises at least one nanoscale metallic reflector positioned at least partly in the insulating layer.
    Type: Application
    Filed: May 14, 2012
    Publication date: November 15, 2012
    Inventors: Pol Van Dorpe, Pieter Neutens
  • Publication number: 20120288232
    Abstract: Disclosed is a method of coupling light into a power semiconductor device having a semiconductor structure with two or more layers. The power semiconductor device has multiple cells of functionally identical units linked by multiple interconnects. In each device unit, a patterned electrode layer is disposed on the surface of the semiconductor structure. The method includes illuminating the power semiconductor device by directing a light from a light source through the patterned electrode layer to form an enhanced light coupling with the semiconductor structure. The patterned electrode layer is configured to have a micron scaled grid pattern having multiple metal grids and aperture openings that is based on a distributed resistance model having two characteristic current decay lengths.
    Type: Application
    Filed: May 9, 2012
    Publication date: November 15, 2012
    Inventors: Oved S. F. Zucker, Yeuan-Ming Sheu, Yannick C. Morel
  • Patent number: 8306369
    Abstract: An optical hybrid circuit includes a multimode interference coupler; a first 2:2 optical coupler; a second 2:2 optical coupler; a third 2:2 optical coupler; and a phase controlling region. The first 2:2 optical coupler, the second 2:2 optical coupler, and the third 2:2 optical coupler are coupled to one of the pair of first output channels, the pair of second output channels, the pair of third output channels, and the pair of fourth output channels of the multimode interference coupler. The phase controlling region is provided in one or both of each pair of at least two pairs of output channels from among three pairs of output channels to which the first 2:2 optical coupler, the second 2:2 optical coupler, and the third 2:2 optical coupler are coupled, respectively.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: November 6, 2012
    Assignee: Fujitsu Limted
    Inventor: Seok Hwan Jeong
  • Patent number: 8306374
    Abstract: The invention provides an optical printed circuit board connector, comprising: a housing having a major plane; an optical interface for connection in use to another optical interface on a device to which in use the optical printed circuit board connector is arranged to be connected, in which the optical interface on the connector is mounted such that it is twistable about a vertical axis in the major plane to vary the launch angle of light from the interface with respect to the housing.
    Type: Grant
    Filed: March 12, 2010
    Date of Patent: November 6, 2012
    Assignee: Xyratex Technology Limited
    Inventors: Richard C. A. Pitwon, Kenneth M Hopkins, David A. Milward
  • Patent number: 8300997
    Abstract: 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: Grant
    Filed: January 6, 2010
    Date of Patent: October 30, 2012
    Assignee: National Tsing Hua University
    Inventors: Shiuh Chao, Chih-T'sung Shih
  • Patent number: 8300999
    Abstract: An optical device includes a light-transmitting medium on a base. The light-transmitting medium at least partially defines a free propagation region through which light signals travel. A reflective grating is positioned such that light signals can travel through the free propagation region and be received by the optical grating. The optical grating is configured to reflect the received light signal back into the free propagation region. The optical grating reflects the light signals such that light signals associated with different wavelengths separate as the light signals travel through the free propagation region. The portion of the light-transmitting medium that defines the free propagation region has a facet through with the light signals are transmitted. The grating includes a buffer layer between the facet and a reflecting layer that is configured to reflect the light signals received by the grating.
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: October 30, 2012
    Assignee: Kotura, Inc.
    Inventors: Wei Qian, Dazeng Feng, Cheng-Chih Kung, Joan Fong, Mehdi Asghari
  • Patent number: 8295712
    Abstract: An optical device comprising an optical device comprising a Mach-Zehnder interferometer having a first 2×2 optical coupler, a second 2×2 optical coupler, a first optical arm, and a second optical arm. The first and second arms connecting corresponding pairs of optical ports of the first and second 2×2 optical couplers. The second optical arm has a longer optical path than the first arm. The device also comprises one or more optical resonators optically coupled to the first optical arm and an optical splitter. The optical splitter is coupled to deliver a portion of an input optical signal to one port of the first 2×2 optical coupler and to deliver a remaining portion of the input optical signal to one port of the second optical coupler.
    Type: Grant
    Filed: November 10, 2009
    Date of Patent: October 23, 2012
    Assignee: Alcatel Lucent
    Inventors: Young Kai Chen, Mahmoud Rasras
  • Patent number: 8290319
    Abstract: A ramp-stack chip package is described. This chip package includes a vertical stack of semiconductor dies or chips that are offset from each other in a horizontal direction, thereby defining a stepped terrace. A high-bandwidth ramp component, which is positioned approximately parallel to the stepped terrace, is mechanically coupled to the semiconductor dies. Furthermore, the ramp component includes an optical waveguide that conveys the optical signal, and an optical coupling component that optically couples the optical signal to one of the semiconductor dies, thereby facilitating high-bandwidth communication of the optical signal between the semiconductor die and the ramp component.
    Type: Grant
    Filed: August 25, 2010
    Date of Patent: October 16, 2012
    Assignee: Oracle America, Inc.
    Inventors: John A. Harada, David C. Douglas, Robert J. Drost
  • Patent number: 8285091
    Abstract: A system for efficient generation of THz radiation is provided that includes a triply-resonant nonlinear photonic resonator coupled to at least one near-infrared (NIR) or optical waveguide and to at least one THz waveguide. The energy traveling through the at least one near-infrared (NIR) or optical waveguide is converted to THz radiation inside the triply-resonant photonic resonator via a nonlinear difference frequency generation (DFG) process.
    Type: Grant
    Filed: July 12, 2010
    Date of Patent: October 9, 2012
    Assignees: Massachusetts Institute of Technology, President & Fellows of Harvard College
    Inventors: Jorge Bravo-Abad, Ian B. Burgess, John D. Joannopoulos, Steven G. Johnson, Marko Loncar, Murray W. McCutcheon, Alejandro W. Rodriguez, Marin Soljacic, Yinan Zhang
  • Patent number: 8285093
    Abstract: A microstructure optical adapter or tip according to the present disclosure may incorporate precision micro structure optical components engaging the input or output end of light energy delivery devices for customized light delivery of the light energy. The incorporation of precision micro structure optical components in injection molded plastic or glass parts will allow for inexpensive modification of the output light while also serving to protect the end of the illumination device. The micro structure optical components may also be incorporated in an adapter to tailor the light energy to the subsequent device.
    Type: Grant
    Filed: January 6, 2009
    Date of Patent: October 9, 2012
    Assignee: Invuity, Inc.
    Inventors: Alex Vayser, Kenneth C. Trauner
  • Publication number: 20120251030
    Abstract: The device for coupling an electromagnetic wave includes a waveguide and a slit metal guide. The slit metal guide is formed by two metal elements which are coplanar and spaced out from one another so as to form the slit. The slit metal guide is arranged in a plane offset from the plane of the waveguide and partially covers said waveguide, said waveguide and the slit guide being maintained at a distance from one another by a dielectric.
    Type: Application
    Filed: December 7, 2010
    Publication date: October 4, 2012
    Inventors: Cecile Delacour, Badhise Ben Bakir, Jean-Marc Fedeli, Alexei Tchelnokov
  • Patent number: 8280207
    Abstract: A method and system for coupling optical signals into silicon optoelectronic chips are disclosed and may include coupling one or more optical signals into a back surface of a CMOS photonic chip comprising photonic, electronic, and optoelectronic devices. The devices may be integrated in a front surface of the chip and one or more grating couplers may receive the optical signals in the front surface of the chip. The optical signals may be coupled into the back surface of the chip via one or more optical fibers and/or optical source assemblies. The optical signals may be coupled to the grating couplers via a light path etched in the chip, which may be refilled with silicon dioxide. The chip may be flip-chip bonded to a packaging substrate. Optical signals may be reflected back to the grating couplers via metal reflectors, which may be integrated in dielectric layers on the chip.
    Type: Grant
    Filed: November 6, 2009
    Date of Patent: October 2, 2012
    Assignee: Luxtera Inc.
    Inventors: Thierry Pinguet, Attila Mekis, Steffen Gloeckner
  • Patent number: 8280214
    Abstract: 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: Grant
    Filed: November 13, 2006
    Date of Patent: October 2, 2012
    Assignee: The Regents of the University of California
    Inventors: Peidong Yang, Matt Law, Donald J. Sirbuly, Justin C. Johnson, Richard Saykally, Rong Fan, Andrea Tao
  • Patent number: 8274732
    Abstract: 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: Grant
    Filed: January 22, 2010
    Date of Patent: September 25, 2012
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventor: Shinobu Tamaoki
  • Patent number: 8275224
    Abstract: 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: Grant
    Filed: August 14, 2009
    Date of Patent: September 25, 2012
    Assignee: Alcatel Lucent
    Inventor: Christopher R. Doerr
  • Publication number: 20120237165
    Abstract: 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: Application
    Filed: May 30, 2012
    Publication date: September 20, 2012
    Inventors: Gurtej Singh Sandhu, Guy T. Blalock, Howard E. Rhodes
  • Patent number: 8270778
    Abstract: A single-photon absorption all-optical signal-processing device, systems employing the same, and methods of making and using the same. Illustrative examples are provided based on silicon semiconductor technology that employs rectangular waveguides fabricated on SOI wafers. In some embodiments, it is observed that the waveguides have surface state density, ?, of not less than 1.5×1018 cm?1s?1mW?1 to provide a single-photon absorption operation mode. In some embodiments, some portion of the ridge waveguide structure has a surface to volume ratio of at least 18 ?m?1, computed using a unit length of 1 ?m of the waveguide, with the width and depth dimensions of the waveguide being measured in units of microns.
    Type: Grant
    Filed: August 6, 2010
    Date of Patent: September 18, 2012
    Assignee: University of Washington through its Center for Commercialization
    Inventors: Michael J. Hochberg, Thomas W. Baehr-Jones
  • Patent number: 8270785
    Abstract: A method for cross connecting optical signals includes using a common beam steerer to direct a set of optical signals from a set of input ports to a set of output ports. The method further includes adjusting a curvature of the common beam steerer so that paths of the optical signals have substantially the same effective path length.
    Type: Grant
    Filed: October 14, 2009
    Date of Patent: September 18, 2012
    Assignee: Tellabs Operations, Inc.
    Inventor: Jerry C. Chen
  • Patent number: 8270784
    Abstract: 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: Grant
    Filed: June 19, 2008
    Date of Patent: September 18, 2012
    Assignee: Heriot-Watt University
    Inventors: Robert Roderick Thomson, Henry Thomas Gibson Bookey, Nicholas David Psaila, Ajoy Kumar Kar
  • Patent number: 8265434
    Abstract: In a lens system, such as for use in optical rotary joints, obliquely tilted cavities are inserted in a light path between light-waveguides and lenses to be coupled thereto in order to compensate lateral displacements between the light waveguides and the lenses. The cavities are filled with an optical medium having a predetermined refractive index in order to achieve a parallel displacement of a light-ray path, so that the ray path passes centrally through the lenses.
    Type: Grant
    Filed: June 4, 2009
    Date of Patent: September 11, 2012
    Assignee: Schleifring und Apparatebau GmbH
    Inventors: Gregor Popp, Matthias Rank
  • Patent number: 8254746
    Abstract: An optical sight is provided and may include: a housing; at least one optic supported by the housing; an illumination device associated with the at least one optic and selectively supplying the at least one optic with light, the illumination device including a first fiber associated with a first light source; a coupler collecting light from the first fiber and supplying the at least one optic with light from the first light source; and an electroluminescent device associated with the at least one optic and selectively supplying the at least one optic with light separate from the coupler.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: August 28, 2012
    Assignee: Trijicon, Inc.
    Inventors: Darin W. Schick, Thomas K. Maciak, Kian Siong Lim
  • Patent number: 8254735
    Abstract: A coupling device includes a fiber collimator, a wedge window pair and a plane window for coupling a light beam provided by a beam source to optical fiber. The fiber collimator is mounted to a base plate and includes a collimator lens, an end of the optical fiber being positioned at a focal point of the collimator lens. The wedge window pair is mounted to the base plate, and is configured to adjust the light beam to be parallel to an optical axis of the fiber collimator. The plane window is mounted to the base plate between the wedge window pair and the fiber collimator. The plane window is configured to align the parallel direction of the light beam with the optical axis of the fiber collimator.
    Type: Grant
    Filed: September 23, 2009
    Date of Patent: August 28, 2012
    Assignee: Agilent Technologies, Inc.
    Inventor: George Tsai
  • Patent number: 8249400
    Abstract: An optical structure on an optical fiber and a method of fabrication is provided. The optical structure includes an end of an optical fiber and a layer formed on the end of the optical fiber. The layer comprises one or more first portions having a first optical pathlength in a direction perpendicular to the layer and one or more second portions having a second optical pathlength in the direction perpendicular to the layer, the second optical pathlength different from the first optical pathlength.
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: August 21, 2012
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Onur Kilic, Michel J. F. Digonnet, Gordon S. Kino, Olav Solgaard, Shrestha Basu Mallick, Onur Can Akkaya
  • Publication number: 20120207435
    Abstract: A method for performing a multi-stage dilation of optical fibres is described, the method comprising performing successive dilation steps such that the adiabatic condition is maintained throughout the fibre. There is also described various optical devices employing such multi-stage dilated optical fibres, as well as methods of manufacture of the optical devices.
    Type: Application
    Filed: September 8, 2010
    Publication date: August 16, 2012
    Inventors: Dominic Finnian Murphy, Noel Valentine Healy, Conleth Dennis Hussey, Ronan O'Byrne, Sergey Sergeyev
  • Patent number: 8244077
    Abstract: This invention provides a versatile unit cell as well as programmable and reconfigurable optical signal processors (such as optical-domain RF filters) that are constructed from arrays of those unit cells interconnected by optical waveguides. Each unit cell comprises an optical microdisk, an optical phase shifter, and at least one input/output optical waveguide, wherein the microdisk and the phase shifter are both optically connected to a common waveguide.
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: August 14, 2012
    Assignee: HRL Laboratories, LLC
    Inventor: Daniel Yap
  • Patent number: 8238703
    Abstract: In one aspect, an illumination structure includes a substantially non-fiber waveguide, which itself includes a discrete in-coupling region for receiving light, a discrete propagation region for propagating light, and a discrete out-coupling region for emitting light.
    Type: Grant
    Filed: March 7, 2011
    Date of Patent: August 7, 2012
    Assignee: Oree Inc.
    Inventors: Noam Meir, Eran Fine
  • Patent number: 8235602
    Abstract: An adapter couples a length of optical fiber to a hollow probe and to an optical coherence tomography instrument. The length of optical fiber may be greater than the length of the adapter itself. The optical fiber is fixed to an optical coupler at a proximal end of the adapter and may be maintained in a curved configuration by features located in an internal cavity of the adapter. An optical fiber advance mechanism be used to advance and/or retract the length of optical fiber to align it within the hollow probe.
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: August 7, 2012
    Inventor: Brooks H. Rohlen
  • Patent number: 8229262
    Abstract: 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: Grant
    Filed: March 17, 2010
    Date of Patent: July 24, 2012
    Assignees: V-Gen Ltd., State of Israel-SOREQ Nuclear Research Center
    Inventors: Eran Inbar, Yoav Sintov
  • Publication number: 20120183256
    Abstract: A connection system and method in which, when a plug portion is mated with a receptacle portion, a reflector in the plug portion can redirect optical signals between an end of an optical fiber in the plug portion and an opto-electronic device, such as a light source or light receiver, in the receptacle portion
    Type: Application
    Filed: January 18, 2011
    Publication date: July 19, 2012
    Inventors: Bing Shao, Seng-Kum Chan, Ye Chen
  • Patent number: 8218920
    Abstract: The application of optical microstructures improve the quality of light available to the viewer of an optical display system, or any display which works on the concept of moving one surface into direct contact or close proximity of a light guide to extract light through frustrated total internal reflection. Certain ones of the microstructures can act to assist in overcoming stiction between the surface and the light guide.
    Type: Grant
    Filed: December 30, 2008
    Date of Patent: July 10, 2012
    Assignee: Rambus Inc.
    Inventors: Daniel K. Van Ostrand, Carey King, Garth Gobeli