Monolithic Integrated Patents (Class 372/50.1)
  • Publication number: 20130343419
    Abstract: A laser diode assembly includes a housing having a housing part and a mounting part, which is connected to the housing part and which extends away from the housing part along an extension direction. A laser diode chip is disposed on the mounting part. The laser diode chip has, on a substrate, semiconductor layers with an active layer for emitting light. The housing part and the mounting part have a main body composed of copper and at least the housing part is steel-sheathed. A first solder layer having a thickness of greater than or equal to 2 ?m is arranged between the laser diode chip and the mounting part. The laser diode chip has a radiation coupling-out area, on which a crystalline protective layer is applied.
    Type: Application
    Filed: April 4, 2013
    Publication date: December 26, 2013
    Applicant: OSRAM Opto Semiconductors GmbH
    Inventor: OSRAM Opto Semiconductors GmbH
  • Patent number: 8615025
    Abstract: A tunable laser includes a substrate comprising a silicon material and a gain medium coupled to the substrate. The gain medium includes a compound semiconductor material. The tunable laser also includes a waveguide disposed in the substrate and optically coupled to the gain medium, a first wavelength selective element characterized by a first reflectance spectrum and disposed in the substrate, and a second wavelength selective element characterized by a second reflectance spectrum and disposed in the substrate. The tunable laser further includes an optical coupler disposed in the substrate and joining the first wavelength selective element, the second wavelength selective element, and the waveguide and an output mirror.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: December 24, 2013
    Assignee: Skorpios Technologies, Inc.
    Inventors: John Dallesasse, Stephen B. Krasulick, William Kozlovsky
  • Patent number: 8615028
    Abstract: A vertically integrated optical phased array has an array of a plurality of vertical cavity surface emitting lasers disposed in an aperiodic arrangement thereof, the plurality of vertical cavity surface emitting lasers having light emitting ports disposed parallel to one another. An array of a plurality of vertical cavity phase modulators disposed in the same aperiodic arrangement as the array of the plurality of vertical cavity surface emitting lasers, with individual modulators of said array of a plurality of vertical cavity phase modulators each being disposed in optical alignment with an injection port of a corresponding one of said plurality of vertical cavity surface emitting lasers.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: December 24, 2013
    Assignee: HRL Laboratories, LLC
    Inventors: Keyvan Sayyah, James H. Scaffner, Carson R. White
  • Patent number: 8611388
    Abstract: A composite integrated optical device includes a substrate including a silicon layer and a waveguide disposed in the silicon layer. The composite integrated optical device also includes an optical detector bonded to the silicon layer and a bonding region disposed between the silicon layer and the optical detector. The bonding region includes a metal-assisted bond at a first portion of the bonding region. The metal-assisted bond includes an interface layer positioned between the silicon layer and the optical detector. The bonding region also includes a direct semiconductor-semiconductor bond at a second portion of the bonding region.
    Type: Grant
    Filed: March 3, 2011
    Date of Patent: December 17, 2013
    Assignee: Skorpios Technologies, Inc.
    Inventors: Stephen B. Krasulick, John Dallesasse
  • Patent number: 8599893
    Abstract: Disclosed is a terahertz wave generator which includes a dual mode semiconductor laser device configured to generate at least two laser lights having different wavelengths and to beat the generated laser lights; and a photo mixer formed on the same chip as the dual mode semiconductor laser device and to generate a continuous terahertz wave when excited by the beat laser light.
    Type: Grant
    Filed: September 6, 2011
    Date of Patent: December 3, 2013
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Namje Kim, Kyung Hyun Park, Young Ahn Leem, Hyunsung Ko, Sang-Pil Han, Chul-Wook Lee, Dong-Hun Lee
  • Publication number: 20130314693
    Abstract: An array of laser diode emitters is used as an illumination source for a range imaging system. The laser diode emitters are disposed on a common substrate. When one of the emitters fails, the remaining emitters emit enough light to meet the output optical power specification. The emitters can be disposed with a tight spacing. The tight spacing facilitates packaging of the entire array into a compact single package on a common heat sink.
    Type: Application
    Filed: May 23, 2012
    Publication date: November 28, 2013
    Applicant: JDS Uniphase Corporation
    Inventors: Jay A. Skidmore, Victor Rossin, Pierre Doussiere
  • Publication number: 20130301668
    Abstract: Use of semiconductor materials having a lattice constant of within +/?1.6% of 6.1 angstroms facilitates improved semiconductor device performance and new semiconductor structures, for example integration of field-effect devices and optoelectronic devices on a single wafer. High-mobility channels are enabled, improving device performance.
    Type: Application
    Filed: May 13, 2013
    Publication date: November 14, 2013
    Inventor: Yong-Hang Zhang
  • Patent number: 8582618
    Abstract: A surface-emitting semiconductor laser device that includes an edge-emitting laser formed in layers of semiconductor material disposed on a semiconductor substrate, a polymer material disposed on the substrate laterally adjacent the layers in which the edge-emitting laser is formed, a diffractive or refractive lens formed on an upper surface of the polymer material, a side reflector formed on an angled side reflector facet of the polymer material generally facing an exit end facet of the laser, and a lower reflector disposed on the substrate beneath the polymer material. Laser light passes out of the exit end facet and propagates through the polymer material before being reflected by the side reflector toward the lower reflector. The laser light is then re-reflected by the lower reflector towards the lens, which directs the laser light out the device in a direction that is generally normal to the upper surface of the substrate.
    Type: Grant
    Filed: January 18, 2011
    Date of Patent: November 12, 2013
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Guido Alberto Roggero, Rui Yu Fang, Alessandro Stano, Giuliana Morello
  • Patent number: 8582617
    Abstract: An 830 nm broad area semiconductor laser having a distributed Bragg reflector (DBR) structure. The semiconductor laser supports multiple horizontal transverse modes of oscillation extending within a plane perpendicular to a crystal growth direction of the laser, in a direction perpendicular to the length of the resonator of the laser. The resonator includes a diffraction grating in the vicinity of the emitting facet of the laser. The width of the diffraction grating in a plane perpendicular to the growth direction and perpendicular to the length of the resonator is different at first and second locations along the length of the resonator. The width of the diffraction grating along a direction which is perpendicular to the length of the resonator increases with increasing distance from the front facet of the semiconductor laser.
    Type: Grant
    Filed: March 20, 2012
    Date of Patent: November 12, 2013
    Assignee: Mitsubishi Electric Corporation
    Inventor: Kimio Shigihara
  • Publication number: 20130287057
    Abstract: A laser diode has a first n-conducting cladding layer, a first n-conducting waveguide layer arranged therein, an active layer is suitable for generating radiation arranged on the first waveguide layer, a second p-conducting waveguide layer, arranged on the active layer, and a second p-conducting cladding layer, arranged on the second waveguide layer the sum of the layer thickness of the first waveguide layer, the layer thickness of the active layer and the layer thickness of the second waveguide layer is greater than 1 ?m and the layer thickness of the second waveguide layer is less than 150 nm. The maximum mode intensity of the fundamental mode is in a region outside the active layer, and the difference between the refractive index of the first waveguide layer and the refractive index of the first cladding layer is between 0.04 and 0.01.
    Type: Application
    Filed: December 28, 2011
    Publication date: October 31, 2013
    Inventors: Erbert Götz, Hans Wenzel, Paul Crump
  • Publication number: 20130287056
    Abstract: A laser device for emitting THz waves includes a heterostructure with a substantially cylindrical shape including a first layer in an optically nonlinear semiconductor material including emitters to emit in two whispering gallery modes that are confined in the first layer and enabling the generation within the first layer of radiation in an electromagnetic THz whispering gallery mode, a second and a third layer in a semiconductor material each presenting an optical index that is smaller than the index of the material used for the first layer and a metal layer situated at one end of the heterostructure. The heterostructure includes in its center a hole with a substantially cylindrical shape extending over the entire height of the heterostructure.
    Type: Application
    Filed: April 30, 2013
    Publication date: October 31, 2013
    Inventors: Jean-Michel Gerard, Julien Claudon, Giuseppe Leo, Alessio Andronico, Mathieu Munsch
  • Patent number: 8571082
    Abstract: The present invention provides a QCL device with an electrically controlled refractive index through the Stark effect. By changing the electric field in the active area, the energy spacing between the lasing energy levels may be changed and, hence, the effective refractive index in the spectral region near the laser wavelength may be controlled.
    Type: Grant
    Filed: January 24, 2011
    Date of Patent: October 29, 2013
    Assignees: Maxion Technologies, Inc., The Research Foundation of State University of New York, Board of Regents, The University of Texas System
    Inventors: Gregory Belenky, John D. Bruno, Mikhail V. Kisin, Serge Luryi, Leon Shterengas, Sergey Suchalkin, Richard L. Tober, Mikhail Belkin
  • Patent number: 8565280
    Abstract: This semiconductor laser element includes a semiconductor element layer including an active layer and having an emitting side cavity facet and a reflecting side cavity facet, and a facet coating film on a surface of the emitting side cavity facet. The facet coating film includes a photocatalytic layer arranged on an outermost surface of the facet coating film and a dielectric layer arranged between the photocatalytic layer and the emitting side cavity facet. A thickness of the dielectric layer is set to a thickness defined by m×?/(2×n) (m is an integer), where a wavelength of a laser beam emitted from the active layer is ? and a refractive index of the dielectric layer is n, and at least 1 ?m.
    Type: Grant
    Filed: September 14, 2011
    Date of Patent: October 22, 2013
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Shingo Kameyama, Hiroyuki Yukawa
  • Patent number: 8565279
    Abstract: A semiconductor optical integrated device includes a first semiconductor optical device formed over a (001) plane of a substrate and a second semiconductor optical device which is formed over the (001) plane of the substrate in a (110) orientation from the first semiconductor optical device and which is optically connected to the first semiconductor optical device. The first semiconductor optical device includes a first core layer and a first clad layer which is formed over the first core layer and which has a crystal surface on a side on a second semiconductor optical device side that forms an angle ? greater than or equal to 55 degrees and less than or equal to 90 degrees with the (001) plane.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: October 22, 2013
    Assignee: Fujitsu Limited
    Inventors: Shigekazu Okumura, Mitsuru Ekawa, Shuichi Tomabechi, Ayahito Uetake
  • Patent number: 8558473
    Abstract: A light emitting device has: a dispersion light source wherein a plurality of semiconductor laser bars are arranged; and a drive circuit which makes the dispersion light source output at least one pulsed beam by supplying at least one drive pulse to the dispersion light source. In the dispersion light source, a plurality of semiconductor laser bars are arranged on a base, and furthermore, heat dissipating plates are arranged between the semiconductor laser bars. The pulse width of the pulsed beam outputted from the dispersion light source is longer than 1 femtosecond but shorter than 0.25 second, and the energy of the single pulsed beam is less than 66.8 ?[J].
    Type: Grant
    Filed: October 13, 2009
    Date of Patent: October 15, 2013
    Assignee: Honda Motor Co., Ltd.
    Inventor: Tomoyuki Kamiyama
  • Patent number: 8553741
    Abstract: The invention includes a single chip having multiple different devices integrated thereon for a common purpose. The chip includes a substrate having a peripheral area, a mid-chip area, and a central area. A plurality of FETs are formed in the peripheral area with each FET having a layer of single crystal rare earth material in at least one of a conductive channel, a gate insulator, or a gate stack. A plurality of photonic devices including light emitting diodes or vertical cavity surface emitting lasers are formed in the mid-chip area with each photonic device having an active layer of single crystal rare earth material. A plurality of photo detectors are formed in the central area.
    Type: Grant
    Filed: November 12, 2012
    Date of Patent: October 8, 2013
    Assignee: Translucent Inc.
    Inventor: Michael Lebby
  • Patent number: 8553733
    Abstract: A light source device 1 includes a laser light source 10 and an optical phase modulator 15 or the like. The optical phase modulator 15 inputs coherent light output from the laser light source 10 and transmitted through a beam splitter 14, phase-modulates the light according to the position on a beam cross section of the light, and outputs the phase-modulated light to the beam splitter 14. When (p+1) areas sectioned by p circumferences centered on a predetermined position are set on a beam cross section of light input to the optical phase modulator 15, the more outside each of the (p+1) areas is, the wider the radial width of the area, the amount of phase modulation is constant in each of the (p+1) areas, and the amounts of phase modulation differ by ? between two adjacent areas out of the (p+1) areas.
    Type: Grant
    Filed: February 21, 2008
    Date of Patent: October 8, 2013
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Taro Ando, Yoshiyuki Ohtake, Naoya Matsumoto, Takashi Inoue, Haruyoshi Toyoda, Norihiro Fukuchi
  • Patent number: 8548024
    Abstract: A semiconductor laser module includes a semiconductor laser unit and a light selecting unit. The semiconductor laser unit includes a semiconductor laser substrate and a plurality of distributed reflector semiconductor laser devices formed on the semiconductor laser substrate in an array. Each of the distributed reflector semiconductor laser devices is configured to emit a laser light of a different wavelength from an output facet. The light selecting unit includes a light selecting device substrate and a light selecting device formed on the light selecting device substrate. The light selecting device is configured to selectively output a laser light emitted from a distributed reflector semiconductor laser device. The semiconductor laser unit and the light selecting unit are attached to each other in such a manner that the light selecting device is optically coupled to the distributed reflector semiconductor laser devices.
    Type: Grant
    Filed: October 25, 2011
    Date of Patent: October 1, 2013
    Assignee: Furukawa Electric Co., Ltd.
    Inventors: Hideaki Hasegawa, Tatsuya Kimoto, Go Kobayashi
  • Patent number: 8548019
    Abstract: In a GaN-based laser device having a GaN-based semiconductor stacked-layered structure including a light emitting layer, the semiconductor stacked-layered structure includes a ridge stripe structure causing a stripe-shaped waveguide, and has side surfaces opposite to each other to sandwich the stripe-shaped waveguide in its width direction therebetween. At least part of at least one of the side surfaces is processed to prevent the stripe-shaped waveguide from functioning as a Fabry-Perot resonator in the width direction.
    Type: Grant
    Filed: April 3, 2012
    Date of Patent: October 1, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Toshiyuki Kawakami, Tomoki Ono, Shigetoshi Ito, Susumu Omi
  • Patent number: 8532155
    Abstract: There is provided an optical interconnection system including a plurality of semiconductor integrated devices each including a surface emitting laser array device including a plurality of surface emitting laser devices each emitting an output laser signal light of a different wavelength modulated based on an input modulated signal, a silicon optical waveguide that guides output laser signal lights emitted from the surface emitting laser devices of each of the semiconductor integrated devices to another semiconductor integrated device, a plurality of optical couplers respectively corresponding to the semiconductor integrated devices and guiding the output laser signal lights to the silicon optical waveguide, and a plurality of optical splitters respectively corresponding to the semiconductor integrated devices, receiving the output laser signal lights guided by the silicon optical waveguide, and inputting an input laser signal light to a corresponding one of the semiconductor integrated devices.
    Type: Grant
    Filed: January 3, 2013
    Date of Patent: September 10, 2013
    Assignee: Furukawa Electric Co., Ltd.
    Inventors: Keishi Takaki, Masaki Funabashi, Yasumasa Kawakita, Naoki Tsukiji
  • Patent number: 8526478
    Abstract: A semiconductor optical integrated element includes: a substrate; and a laser diode and a modulator which are integrated on the substrate. The laser diode includes an embedded waveguide having a core layer, both sides of which are embedded in a semiconductor material. The modulator includes a high-mesa ridge waveguide having a core layer, neither side of which is embedded in the semiconductor material. The core layers in the laser diode and the modulator are stripe-shaped.
    Type: Grant
    Filed: February 3, 2011
    Date of Patent: September 3, 2013
    Assignee: Mitsubishi Electric Corporation
    Inventors: Eitaro Ishimura, Kazuhisa Takagi, Keisuke Matsumoto, Takeshi Saito
  • Patent number: 8525148
    Abstract: Solid state lighting devices that can produce white light without a phosphor are disclosed herein. In one embodiment, a solid state lighting device includes a first semiconductor material, a second semiconductor material spaced apart from the first semiconductor material, and an active region between the first and second semiconductor materials. The active region includes a first sub-region having a first center wavelength and a second sub-region having a second center wavelength different from the first center wavelength.
    Type: Grant
    Filed: July 16, 2010
    Date of Patent: September 3, 2013
    Assignee: Micron Technology, Inc.
    Inventors: Zaiyuan Ren, Thomas Gehrke
  • Publication number: 20130223464
    Abstract: A light emitting semiconductor device according the invention includes an SOI substrate, a collector and an injector. The SOI substrate includes a carrier layer, a buried oxide layer on the carrier layer, and a doped silicon layer structure with a conductivity type. The doped silicon layer structure with the conductivity type includes at least two silicon- or silicon germanium layers arranged adjacent to one another, wherein a dislocation network is configured in their interface portions at which dislocation network a radiative charge carrier combination with a light energy is provided, which light energy is smaller than a band gap energy of the silicon- or silicon germanium layers. The collector is formed as a pn-junction in a portion between the dislocation network and a surface of the silicon layer structure that is oriented away from the carrier layer, and wherein the injector is configured as a metal insulator semiconductor diode.
    Type: Application
    Filed: November 29, 2012
    Publication date: August 29, 2013
    Applicant: IHP-GmbH- Innovations for High Performance Microelectronics
    Inventor: IHP-GmbH- Innovations for High Performance
  • Patent number: 8520713
    Abstract: An array of Surface Emitting Laser (SEL) elements can be used to efficiently pump a disk or rod of solid-state laser glass or crystal, or harmonic-generating crystal. Placing the laser array chip against or near the surface of this solid-state material provides very high and uniform optical power density without the need for lenses or fiber-optics to conduct the light from typical edge-emitting lasers, usually formed in a stack of bars. The lasers can operate in multi-mode output for highest output powers. Photolithography allows for an infinite variety of connection patterns of sub-groups of lasers within the array, allowing for spatial contouring of the optical pumping power across the face of the solid-state material. The solid-state material may be pumped either within (intra-cavity) or externally (extra-cavity) to the SEL laser array.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: August 27, 2013
    Assignee: TriLumina Corporation
    Inventor: John R Joseph
  • Patent number: 8520707
    Abstract: The aberration takes place according to the height of the image because the laser light tilts from the optical axis when it enters to the object lens in the optical pickup device which is equipped with a laser diode for BD and the monolithic laser diode capable of irradiating laser lights with two different wavelengths for DVD and CD as one package to read the signal by single object lens and single optical system. This is because the light sources of the three lights with different wavelengths are away from each other in the optical pickup device. The emission point of the laser diode for BD is formed at the location shifted from the center of the chip. The laser diode for BD is disposed adjacent to the monolithic laser diode capable of irradiating laser lights with two wavelengths for DVD and CD to make the emission point closer to the monolithic laser diode. The sizes of these two laser diodes is minimized by employing half dicing during the cleavage processing for separating the chips.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: August 27, 2013
    Assignees: SANYO Electric Co., Ltd., SANYO Optec Design Co., Ltd.
    Inventors: Masahito Ogata, Yoshio Noishiki
  • Publication number: 20130202005
    Abstract: The subject matter disclosed herein relates to formation of silicon germanium devices with tensile strain. Tensile strain applied to a silicon germanium device in fabrication may improve performance of a silicon germanium laser or light detector.
    Type: Application
    Filed: February 7, 2012
    Publication date: August 8, 2013
    Applicant: APIC Corporation
    Inventor: Birendra Dutt
  • Patent number: 8498318
    Abstract: A light (2) emitting system (1) includes an optical cavity (10) having at least one optical mode and including at least one transmissive reflector (12), a first set (20) of quantum wells (21, 22) and elements (31, 32, 33) of electrical injection of the quantum wells of the first set. The quantum wells of the first set are arranged so that at least one of their electronic resonances is a strong coupling regime with an optical mode of the optical cavity and emits a light according to a mixed exciton-polariton mode. The optical cavity further includes a second set (40) of quantum wells (41, 42, 43, 44, 45) arranged outside of the direct range of the elements of electrical injection and arranged in relation to the quantum wells of the first set so that at least one of their electronic resonances is in a strong coupling regime with the mixed exciton-polariton mode of the optical cavity.
    Type: Grant
    Filed: October 29, 2009
    Date of Patent: July 30, 2013
    Assignee: Centre National de la Recherche Scientifique - CNRS
    Inventors: Guillaume Malpuech, Dmitry Solnyshkov, Aldo Di Carlo, Eleonora Petrolati
  • Patent number: 8494019
    Abstract: Within a semiconductor laser device, mounting a semiconductor laser element array of multi-beam structure on a sub-mount, the semiconductor laser element array of multi-beam structure comprises one piece of a semiconductor substrate 11; a common electrode 1, which is formed on a first surface of the semiconductor substrate; a semiconductor layer 2, which is formed on the other surface of the semiconductor substrate, and has a plural number of light emitting portions 7 within an inside thereof; a plural number of anode electrodes 3 of a second conductivity type, which are formed above the plural number of light emitting portions, respectively; and a supporting portion 25, which is provided outside a region of forming the light emitting portions, wherein on one surface of the sub-mount is connected an electrode 3 of the semiconductor laser element array through a solder 4, and that solder 4 is formed to cover a supporting portion and an electrode neighboring thereto, and further on the electrode 3 is formed a g
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: July 23, 2013
    Assignee: Oclaro Japan, Inc.
    Inventors: Yoshihiko Iga, Hiroshi Moriya, Yutaka Inoue, Hideki Hara, Keiichi Miyauchi
  • Patent number: 8488646
    Abstract: Enhanced reflectivity High-Contrast Gratings are described which operate in different medium. An HCG is described with a deep/buried metallization layer separated at a distance of least three to four grating thicknesses from the grating. Reflective bandwidth of the HCG is substantially increased, such as by a factor or five, by inclusion of the deep/buried metallization layer. An HCG is described which provides high reflectivity, even when embedded into materials of a moderate to high index of refraction, such as semiconductor material. Vertical cavity surface emitting laser embodiments are described which utilize these reflectivity enhancements, and preferably utilize HCG reflectors for top and/or bottom mirrors.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: July 16, 2013
    Assignee: The Regents of the University of California
    Inventors: Connie Chang-Hasnain, Christopher Chase, Igor Karagodsy
  • Patent number: 8488636
    Abstract: Method for suppressing side modes during use of a tunable laser of MGY type, having an amplification section, a phase section and a reflector section having a Y-branched waveguide, with a first a second branch, where the laser operation point is defined by feeding a respective current through the phase section, the first and the second branch, where possible combinations of these currents span a three-dimensional space, in which elongated volumes define combinations of currents for which the laser is operated in the same mode and where two-dimensional sections, defined by holding the current through the phase section constant and varying the currents through the branches, through a certain of the volumes constitute modeflats.
    Type: Grant
    Filed: March 20, 2009
    Date of Patent: July 16, 2013
    Assignee: Syntune AB
    Inventor: Urban Eriksson
  • Patent number: 8488647
    Abstract: The present invention provides a semiconductor light emitting device realizing increased light detection precision by a simple manufacture process. One or more second oxidation layers are provided between an active layer and a semiconductor light detecting element in addition to a first oxidation layer for narrowing current. Since natural emission light includes many divergence components, the natural emission light is reflected and scattered by the second oxidation layer, and propagation of the natural emission light to the semiconductor light detecting element side is suppressed. The detection level of the natural emission light by the semiconductor light detecting element decreases, and light detection precision increases. The first and second oxidation layers are formed by a single oxidizing process so that the manufacturing process is simplified.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: July 16, 2013
    Assignee: Sony Corporation
    Inventors: Takahiro Arakida, Shiro Uchida, Masaki Shiozaki, Osamu Maeda
  • Publication number: 20130177037
    Abstract: A semiconductor integrated device includes a light-emitting portion including a first lower mesa, a first lower buried layer provided on a side surface of the first lower mesa, a first upper mesa provided above the first lower mesa, and a first upper buried layer provided on a side surface of the first upper mesa; and an optical modulator portion including a second lower mesa, a second lower buried layer provided on a side surface of the second lower mesa, a second upper mesa provided above the second lower mesa, and a second upper buried layer provided on a side surface of the second upper mesa. The first and second lower mesas include first and second core layers optically coupled to each other. The first and second lower buried layers are composed of a semi-insulating semiconductor. The first and second upper buried layers are composed of a resin material.
    Type: Application
    Filed: January 3, 2013
    Publication date: July 11, 2013
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventor: Sumitomo Electric Industries, Ltd.
  • Patent number: 8483253
    Abstract: An optoelectronic (OE) package or system and method for fabrication is disclosed which includes a silicon layer with a wiring layer. The silicon layer has an optical via for allowing light to pass therethrough. An optical coupling layer is bonded to the silicon layer, and the optical coupling layer includes a plurality of microlenses for focusing and or collimating the light through the optical via. One or more first OE elements are coupled to the silicon layer and electrically communicating with the wiring. At least one of the first OE elements positioned in optical alignment with the optical via for receiving the light. A second OE element embedded within the wiring layer. A carrier may be interposed between electrical interconnect elements and positioned between the wiring layer and a circuit board.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: July 9, 2013
    Assignee: International Business Machines Corporation
    Inventors: Russell A. Budd, Paul Fortier, Frank R. Libsch
  • Patent number: 8477822
    Abstract: An apparatus comprising a header comprising a platform for attaching opto-electronic components, an optical element, a laser diode (LD) configured to emit an optical signal that passes through the optical element, and a cap affixed to the header such that the cap is coaxially aligned with the header, wherein the cap and header encase the optical element and the LD.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: July 2, 2013
    Assignee: Futurewei Technologies, Inc.
    Inventor: Rongshong Miao
  • Patent number: 8471289
    Abstract: A semiconductor laser device includes a Si(100) substrate in which a recess having an opening and a bottom face surrounded by inner wall surfaces is formed, a semiconductor laser element placed on the bottom face, and a translucent sealing glass, mounted on top of the Si(100) substrate, which seals the opening. The laser light emitted from the semiconductor laser element is reflected by a metallic reflective film formed on the inner wall surface and then transmits through the sealing glass so as to be emitted externally.
    Type: Grant
    Filed: December 28, 2010
    Date of Patent: June 25, 2013
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Yoshio Okayama, Yasunori Inoue, Takenori Goto, Kazushi Mori, Yuuki Ota, Naoteru Matsubara
  • Patent number: 8472494
    Abstract: A semiconductor laser includes: a first portion, made from a silicon-containing material, including an optical waveguide, a first diffraction grating including a phase shift, and a second diffraction grating; a second portion including a light-emitting layer made from a material different from that of the first portion; a laser region including the first diffraction grating, and the optical waveguide and the light-emitting layer provided in a position corresponding to the first diffraction grating; and a mirror region including the second diffraction grating, and the optical waveguide and the light-emitting layer provided in a position corresponding to the second diffraction grating.
    Type: Grant
    Filed: August 18, 2011
    Date of Patent: June 25, 2013
    Assignee: Fujitsu Limited
    Inventor: Suguru Akiyama
  • Patent number: 8457170
    Abstract: It is an object of the present invention to improve the confinement of the carriers within a VCSEL. As a general concept of the invention, it is proposed to integrate a phototransistor layer structure into the layer stack of the VCSEL.
    Type: Grant
    Filed: August 3, 2010
    Date of Patent: June 4, 2013
    Assignee: Koninklijke Philips Electronics N.V.
    Inventor: Philipp Henning Gerlach
  • Patent number: 8457168
    Abstract: A semiconductor optical waveguide-A having an optical amplification function and a semiconductor optical waveguide-B having a light control function are integrated together on the same substrate. A facet of the semiconductor optical waveguide-A facing an isolation trench and a facet of the semiconductor optical waveguide-B facing the isolation trench are configured as a composite optical reflector/optical connector using an optical interference. The facet of the semiconductor optical waveguide-A achieves an optical reflectivity not higher than the reflectivity corresponding to a cleaved facet and not smaller than several percent, and an optical coupling coefficient of not lower than 50% between the semiconductor optical waveguide-A and the semiconductor optical waveguide-B.
    Type: Grant
    Filed: January 10, 2007
    Date of Patent: June 4, 2013
    Assignee: NEC Corporation
    Inventors: Koji Kudo, Shinya Sudo, Kenji Sato, Kenji Mizutani
  • Patent number: 8457169
    Abstract: An integrated semiconductor laser element includes: semiconductor lasers that oscillate at different oscillation wavelengths from one another, each laser oscillating in a single mode; an optical coupler; and a semiconductor optical amplifier. At least one of active layers of the semiconductor lasers and an active layer of the semiconductor optical amplifier have a same thickness and a same composition that is set to have a gain peak wavelength near a center of a wavelength band formed by the oscillation wavelengths. The semiconductor optical amplifier includes: an equal width portion formed on a side of the optical coupler to guide light in a single mode; and an expanded width portion formed on a light output side. The width of the expanded width portion is set according to a total thickness of well layers of the active layer of the semiconductor optical amplifier.
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: June 4, 2013
    Assignee: Furukawa Electric Co., Ltd.
    Inventors: Tatsuya Kimoto, Toshikazu Mukaihara
  • Patent number: 8451874
    Abstract: A very large mode (VLM) slab-coupled optical waveguide laser (SCOWL) is provided that includes an upper waveguide region as part of the waveguide for guiding the laser mode. The upper waveguide region is positioned in the interior regions of the VLM SCOWL. A lower waveguide region also is part of the waveguide that guides the laser mode. The lower waveguide region is positioned in an area underneath the upper waveguide region. An active region is positioned between the upper waveguide region and the lower waveguide region. The active region is arranged so etching into the VLM SCOWL is permitted to define one or more ridge structures leaving the active region unetched. One or more mode control barrier layers are positioned between said upper waveguide region and said lower waveguide region. The one or more mode control barrier layers control the fundamental mode profile and prevent mode collapse of the laser mode. The mode control barrier layers also block carrier leakage from the active region.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: May 28, 2013
    Assignee: Massachusetts Institute of Technology
    Inventors: Robin K. Huang, Joseph P. Donnelly
  • Patent number: 8451872
    Abstract: A wavelength tunable filter and a wavelength tunable laser module are a codirectional coupler type whose characteristics do not vary significantly with a process error. They are structured so as to include a semiconductor substrate which has a first optical waveguide and a second optical waveguide. The first and the second optical waveguides are extended from a first side of the semiconductor substrate to an opposing second side thereof. The first optical waveguide includes a first core layer, which has a planar layout having periodic convexes and concaves, and a pair of electrodes, which vertically sandwich the first core layer. The second optical waveguide includes a second core layer, which has a lower refractive index than the first core layer. Further, a layer having the same composition and film thickness as the second core layer is placed under the first core layer.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: May 28, 2013
    Assignee: Oclaro Japan, Inc.
    Inventors: Hideo Arimoto, Masahiro Aoki
  • Patent number: 8442084
    Abstract: A semiconductor laser that has a reflective surface. The reflective surface redirects the light of an edge emitting laser diode to emit from the top or bottom surface of the diode. The laser may include a gain layer and a feedback layer located within a semiconductive die. The gain and feedback layers generate a laser beam that travels parallel to the surface of the die. The reflective surface reflects the laser beam 90 degrees so that the beam emits the die from the top or bottom surface. The reflective surface can be formed by etching a vicinally oriented III-V semiconductive die so that the reflective surface extends along a (111)A crystalline plane of the die.
    Type: Grant
    Filed: October 3, 2002
    Date of Patent: May 14, 2013
    Assignee: Laser Operations LLC
    Inventor: Jeffrey E. Ungar
  • Patent number: 8432599
    Abstract: An optical image modulator and a method of manufacturing the same. The optical image modulator includes a substrate, an N electrode contact layer formed on the substrate, a lower distributed Bragg reflection (DBR) layer, a quantum well layer, an upper DBR layer, and a P electrode contact layer sequentially stacked on the N electrode contact layer, a P electrode formed on the P electrode contact layer, and an N electrode formed on the N electrode contact layer. The N electrode is a frame that surrounds the lower DBR layer.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: April 30, 2013
    Assignees: Samsung Electronics Co., Ltd., Gwangju Institute of Science and Technology
    Inventors: Yong-Chul Cho, Yong-Tak Lee, Yong-Hwa Park, Byung-Hoon Na, Bong-Kyu Jeong
  • Patent number: 8422525
    Abstract: An optical device capable of emitting light having a wavelength ranging from about 490 to about 580 nanometers has a gallium nitride substrate with a semipolar crystalline surface region characterized by an orientation of greater than 3 degrees from (11-22) towards (0001) but less than about 50 degrees. A laser stripe formed on the substrate has a cavity orientation substantially parallel to the m-direction.
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: April 16, 2013
    Assignee: Soraa, Inc.
    Inventors: James W. Raring, Daniel F. Feezell, Nicholas J. Pfister
  • Patent number: 8416826
    Abstract: The present invention provides a photonic crystal surface emitting laser with which an arbitrary beam shape can be obtained and which enables design with a high degree of freedom. The surface emitting laser including a photonic crystal having a resonance mode in an in-plane direction parallel to a substrate includes a reflecting mirror for reflecting light emitted from the photonic crystal in a normal direction of the substrate and a spacer layer interposed between the reflecting mirror and the photonic crystal, wherein a nonuniform in-plane distribution is provided to the characteristics of one of the reflecting mirror and the spacer layer, so that a Q-value, which is a resonator characteristic in the normal direction of the substrate in the surface emitting laser, has a nonuniform in-plane distribution.
    Type: Grant
    Filed: April 8, 2010
    Date of Patent: April 9, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasuhiro Nagatomo, Takeshi Uchida
  • Patent number: 8411718
    Abstract: The present invention provides a nitride semiconductor light-emitting device capable of preventing shortening of the device lifetime due to increase in the driving voltage of the device and internal heat generation, and also providing uniform laser characteristics, even if the device has a ridge stripe structure. On a GaN substrate 1, an n-type GaN layer 2, an n-type AlGaN layer 3, an active layer 4, a p-type AlGan layer 5 and a p-type GaN layer 6 are laminated sequentially. On the p-type GaN layer 6, an insulating film 7 and a transparent electrode 8 are formed. A portion of the transparent electrode 8 is formed in contact with the p-type GaN layer 6. A ridge stripe portion D to form a waveguide is configured of a transparent film 9. A region, where the transparent electrode 8 and the p-type GaN layer 6 are in contact with each other, serves as a stripe-shaped current injection region.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: April 2, 2013
    Assignee: Rohm Co., Ltd.
    Inventor: Yukio Shakuda
  • Patent number: 8411711
    Abstract: A semiconductor laser comprises an electrically isolated active section and at least one noise reducing section and operates on a ground state transition of a quantum dot array having inhomogeneous broadening greater than 10 nm. The laser preferably emits more than 10 optical modes such that a total relative intensity noise of each optical mode is less than 0.2% in the 0.001 GHz to 10 GHz range. The spectral power density is preferably higher than 2 mW/nm. An optical transmission system and a method of operating a quantum dot laser with low relative intensity noise of each optical mode are also disclosed.
    Type: Grant
    Filed: December 3, 2009
    Date of Patent: April 2, 2013
    Assignee: Innolume GmbH
    Inventors: Alexey Gubenko, Alexey Kovsh, Greg Wojcik, Daniil Livshits, Igor Krestnikov, Sergey Mikhrin
  • Patent number: 8411715
    Abstract: The invention relates to a semiconductor laser device comprising a laser bar (2), a flexible conductor support (10), a supporting body (3) of a metal or a metal alloy and a heat sink (4), which is arranged between the supporting body (3) and the laser bar (2), the laser bar (2) being electrically contacted by the flexible conductor support (10) and the supporting body (3) having a thickness of at least 2 mm. The invention further relates to a method for producing the above-described semiconductor laser device, wherein a synchronous soldering process is used to solder the laser bar (2) to the heat sink (4) by means of a hard solder layer (30) and the heat sink (4) to the supporting body (3) by means of a further hard solder layer (31).
    Type: Grant
    Filed: November 19, 2008
    Date of Patent: April 2, 2013
    Assignee: OSRAM Opto Semiconductors GmbH
    Inventors: Frank Singer, Thomas Schwarz, Ulrich Steegmüller, Roland Schulz
  • Patent number: 8411719
    Abstract: An optoelectronic (OE) package or system and method for fabrication is disclosed which includes a silicon layer with a wiring layer. The silicon layer has an optical via for allowing light to pass therethrough. An optical coupling layer is bonded to the silicon layer, and the optical coupling layer includes a plurality of microlenses for focusing and or collimating the light through the optical via. One or more first OE elements are coupled to the silicon layer and electrically communicating with the wiring. At least one of the first OE elements positioned in optical alignment with the optical via for receiving the light. A second OE element embedded within the wiring layer. A carrier may be interposed between electrical interconnect elements and positioned between the wiring layer and a circuit board.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: April 2, 2013
    Assignee: International Business Machines Corporation
    Inventors: Russell A. Budd, Paul Fortier, Frank R. Libsch
  • Patent number: RE44482
    Abstract: A lock in pinned photodiode photodetector includes a plurality of output ports which are sequentially enabled. Each time when the output port is enabled is considered to be a different bin of time. A specified pattern is sent, and the output bins are investigated to look for that pattern. The time when the pattern is received indicates the time of flight A CMOS active pixel image sensor includes a plurality of pinned photodiode photodetectors that use a common output transistor. In one configuration, the charge from two or more pinned photodiodes may be binned together and applied to the gate of an output transistor.
    Type: Grant
    Filed: January 5, 2012
    Date of Patent: September 10, 2013
    Assignee: Round Rock Research, LLC
    Inventors: Vladimir Berezin, Alexander I. Krymski, Eric R. Fossum