Tapered Coupler Patents (Class 385/43)
  • Patent number: 10288806
    Abstract: A photonic integrated device includes a first waveguide and a second waveguide. The first and second waveguides are mutually coupled at a junction region the includes a bulge region.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: May 14, 2019
    Assignee: STMicroelectronics (Crolles 2) SAS
    Inventor: Charles Baudot
  • Patent number: 10261257
    Abstract: A waveguide includes a segment with a substantially uniform cure profile and related methods and systems for making and using the same. The waveguide is formed by modifying a laser beam used to write the waveguide to provide a substantially uniform cure profile in the waveguide. A marker characteristic of laser writing may be present in the waveguide. A method or system modifies an intensity profile or a shape profile of a laser beam to proactively compensate for exposure convolution based on the characteristics of the laser beam spot profile. A convolution compensator is positioned in the path of the laser beam to modify the beam spot profile during writing to form the one or more segments of the waveguide in a photo-curable layer.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: April 16, 2019
    Assignee: Seagate Technology LLC
    Inventor: Richard C. A. Pitwon
  • Patent number: 10228513
    Abstract: A spectrometer includes a one or more Arrayed Waveguide Gratings (AWGs), which have output waveguides which are non-uniformly spaced at the output slab and/or with different passband widths. AWGs can be cascaded, each receiving a different portion of the spectrum passing through an upstream AWG, for further processing and/or detection.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: March 12, 2019
    Assignee: SB MICROSYSTEMS
    Inventor: Michael Dickerson
  • Patent number: 10229898
    Abstract: Package structures and methods are provided to integrate optoelectronic and CMOS devices using SOI semiconductor substrates for photonics applications. For example, a package structure includes an integrated circuit (IC) chip, and an optoelectronics device and interposer mounted to the IC chip. The IC chip includes a SOI substrate having a buried oxide layer, an active silicon layer disposed adjacent to the buried oxide layer, and a BEOL structure formed over the active silicon layer. An optical waveguide structure is patterned from the active silicon layer of the IC chip. The optoelectronics device is mounted on the buried oxide layer in alignment with a portion of the optical waveguide structure to enable direct or adiabatic coupling between the optoelectronics device and the optical waveguide structure. The interposer is bonded to the BEOL structure, and includes at least one substrate having conductive vias and wiring to provide electrical connections to the BEOL structure.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: March 12, 2019
    Assignee: International Business Machines Corporation
    Inventors: Russell A. Budd, Mounir Meghelli, Jason Scott Orcutt, Jean-Olivier Plouchart
  • Patent number: 10180546
    Abstract: An optical receptacle includes: a fiber stub including an optical fiber, a ferrule, and an elastic member; and a holder holding the fiber stub, the optical fiber including a cladding and a core for conducting light, the ferrule having a through-hole fixing the optical fiber, the elastic member fixing the optical fiber in the through-hole, the fiber stub having one end surface on the ferrule side, and another on an opposite side, the optical fiber including first and third portions on the opposite end surface sides and a second portion therebetween, a core diameter of the first portion being smaller than the third portion, and a core diameter of the second portion increasing from the first portion side toward the third portion side.
    Type: Grant
    Filed: June 26, 2017
    Date of Patent: January 15, 2019
    Assignee: Toto LTD.
    Inventors: Sho Kondo, Hirotsugu Agatsuma, Satoshi Hakozaki, Satoshi Kaneyuki, Kohei Tominaga, Hiroki Sato
  • Patent number: 10120135
    Abstract: An apparatus comprises a substrate comprising a silicon dioxide (SiO2) material disposed on top of the substrate, a silicon waveguide comprising a first adiabatic tapering and enclosed in the silicon dioxide material, and a low-index waveguide disposed on top of the substrate and adjacent to the first adiabatic tapering. A mode converter fabrication method comprises obtaining a mode converter comprising a substrate, a silicon waveguide disposed on the substrate and comprising a sidewall and a first adiabatic tapering, and a hard mask disposed on the silicon waveguide and comprising a silicon dioxide layer, wherein the hard mask does not cover the sidewall, and oxidizing the silicon waveguide and the hard mask, wherein oxidizing the silicon waveguide and the hard mask encloses the silicon waveguide within the silicon dioxide layer.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: November 6, 2018
    Assignee: Futurewei Technologies, Inc.
    Inventors: Li Yang, Huapu Pan, Qianfan Xu, Dawei Zheng, Xiao Shen
  • Patent number: 10090286
    Abstract: Package structures and methods are provided to integrate optoelectronic and CMOS devices using SOI semiconductor substrates for photonics applications. For example, a package structure includes an integrated circuit (IC) chip, and an optoelectronics device and interposer mounted to the IC chip. The IC chip includes a SOI substrate having a buried oxide layer, an active silicon layer disposed adjacent to the buried oxide layer, and a BEOL structure formed over the active silicon layer. An optical waveguide structure is patterned from the active silicon layer of the IC chip. The optoelectronics device is mounted on the buried oxide layer in alignment with a portion of the optical waveguide structure to enable direct or adiabatic coupling between the optoelectronics device and the optical waveguide structure. The interposer is bonded to the BEOL structure, and includes at least one substrate having conductive vias and wiring to provide electrical connections to the BEOL structure.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: October 2, 2018
    Assignee: International Business Machines Corporation
    Inventors: Russell A. Budd, Mounir Meghelli, Jason Scott Orcutt, Jean-Olivier Plouchart
  • Patent number: 10018789
    Abstract: A method and an apparatus for coupling an optical waveguide to a single-mode fiber are disclosed. The apparatus includes a substrate, a first optical waveguide, a single-mode fiber and a second optical waveguide. The first optical waveguide, the single-mode fiber and the second optical waveguide dispose on the substrate. One end of the single-mode fiber has an optical fiber taper structure. One end of the second optical waveguide is optically coupled to the first optical waveguide. Another end of the second optical waveguide is optically coupled to the single-mode fiber using the optical fiber taper structure of the single-mode fiber.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: July 10, 2018
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Pan Wang, Can Zhang, Qinfen Hao
  • Patent number: 10014648
    Abstract: A bridge fiber includes a core layer and an outer layer which has an index of refraction higher than that of the core layer and covers the outer peripheral surface of the core layer. The outer layer is surrounded by a substance such as the atmosphere having an index of refraction lower than an index of refraction n2 of the outer layer. An area AR1 of the outer layer at one end face of the bridge fiber is an area that is to be optically coupled to an end face of a core of each of a plurality of pumping light inputting optical fibers, while an area AR2 of the core layer at another end face of the bridge fiber is an area that is to be optically coupled to an end face of a core of an amplification optical fiber.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: July 3, 2018
    Assignee: FUJIKURA LTD.
    Inventor: Masahiro Kashiwagi
  • Patent number: 9972961
    Abstract: Exemplary embodiments of the disclosure include a fiber optic amplifier system and a fiber optic oscillator system having a first stage, comprising a first core fiber having a first core diameter and a first cladding size; a second stage, comprising a second core fiber having a second core diameter and a second cladding size; and a double mode adapter connecting the first stage to the second stage, wherein the double mode adapter is configured to provide transitions for the cores and the claddings of the first and second core fibers.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: May 15, 2018
    Assignee: OPTICAL ENGINES, INC.
    Inventors: Donald L. Sipes, Jr., Jason D. Tafoya, Daniel Scott Schulz
  • Patent number: 9964706
    Abstract: The present invention discloses a structure of an input end of an optical fiber, comprising a first optical fiber and a second optical fiber; wherein the first optical fiber and the second optical fiber are coaxial, one end of the first optical fiber is used to receive light beam, and the other end of the first optical fiber is engaged with the second optical fiber; wherein the first optical fiber comprises a fiber core and a first cladding; the second optical fiber comprises a fiber core and a first cladding; wherein a diameter of the first cladding of the first optical fiber is larger than a diameter of the first cladding of the second optical fiber and a difference between them is larger than a first preset threshold; wherein a diameter of the fiber core of the first optical fiber is smaller than or equal to a diameter of the fiber core of the second optical fiber and a difference between them is smaller than a second preset threshold.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: May 8, 2018
    Assignee: BWT Beijing Ltd.
    Inventors: Xiaoguang He, Kuiyan Song, Lei Xu
  • Patent number: 9935089
    Abstract: Package structures and methods are provided to integrate optoelectronic and CMOS devices using SOI semiconductor substrates for photonics applications. For example, a package structure includes an integrated circuit (IC) chip, and an optoelectronics device and interposer mounted to the IC chip. The IC chip includes a SOI substrate having a buried oxide layer, an active silicon layer disposed adjacent to the buried oxide layer, and a BEOL structure formed over the active silicon layer. An optical waveguide structure is patterned from the active silicon layer of the IC chip. The optoelectronics device is mounted on the buried oxide layer in alignment with a portion of the optical waveguide structure to enable direct or adiabatic coupling between the optoelectronics device and the optical waveguide structure. The interposer is bonded to the BEOL structure, and includes at least one substrate having conductive vias and wiring to provide electrical connections to the BEOL structure.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: April 3, 2018
    Assignee: International Business Machines Corporation
    Inventors: Russell A. Budd, Mounir Meghelli, Jason Scott Orcutt, Jean-Olivier Plouchart
  • Patent number: 9935088
    Abstract: Package structures and methods are provided to integrate optoelectronic and CMOS devices using SOI semiconductor substrates for photonics applications. For example, a package structure includes an integrated circuit (IC) chip, and an optoelectronics device and interposer mounted to the IC chip. The IC chip includes a SOI substrate having a buried oxide layer, an active silicon layer disposed adjacent to the buried oxide layer, and a BEOL structure formed over the active silicon layer. An optical waveguide structure is patterned from the active silicon layer of the IC chip. The optoelectronics device is mounted on the buried oxide layer in alignment with a portion of the optical waveguide structure to enable direct or adiabatic coupling between the optoelectronics device and the optical waveguide structure. The interposer is bonded to the BEOL structure, and includes at least one substrate having conductive vias and wiring to provide electrical connections to the BEOL structure.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: April 3, 2018
    Assignee: International Business Machines Corporation
    Inventors: Russell A. Budd, Mounir Meghelli, Jason Scott Orcutt, Jean-Olivier Plouchart
  • Patent number: 9897760
    Abstract: To provide an optical device which enables both (i) suppression of an increase in production cost and (ii) suppression of an increase in optical loss which increase is caused in accordance with a change in temperature of an external environment. In the optical device, a holding member and an optical fiber are bonded and fixed to each other via a first resin layer which is provided between a holding surface of the holding member and a surface of the optical fiber, and the substrate waveguide and the holding member are bonded and fixed to each other via a second resin layer which is provided between an upper surface of the substrate waveguide and a region (bonding surface 31) of a lower surface of the holding member which region is outside the holding surface.
    Type: Grant
    Filed: March 6, 2017
    Date of Patent: February 20, 2018
    Assignee: FUJIKURA LTD.
    Inventor: Shinichi Sakamoto
  • Patent number: 9846278
    Abstract: A fiber coupler is provided, which includes a tubular enveloping structure and several optical fibers arranged in the enveloping structure, each of which has a fiber core and a fiber cladding surrounding same, in order to conduct laser radiation, and each of which extends from the first as far as the second end of the enveloping structure. The enveloping structure includes a tapering section which is tapered in a first direction from the first as far as the second end. In the tapering section, both a first ratio of the diameter of the fiber core to the diameter of the fiber cladding and also a second ratio of the diameter of the mode field of the laser radiation conducted in the optical fiber to the diameter of the fiber core, increases in the first direction for each optical fiber.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: December 19, 2017
    Assignee: TRUMPF Laser GmbH
    Inventors: Marcin Kozak, Malte Kumkar, Peter Riedel, Hagen Zimer
  • Patent number: 9841557
    Abstract: The invention relates to a microstructured optical fiber for generating incoherent supercontinuum light upon feeding of pump light. The microstructured optical fiber has a first section and a second section. A cross-section through the second section perpendicularly to a longitudinal axis of the fiber has a second relative size of microstructure elements and preferably a second pitch that is smaller than a blue edge pitch for the second relative size of microstructure elements. The invention also relates to an incoherent supercontinuum source comprising a microstructured optical fiber according to the invention.
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: December 12, 2017
    Assignee: NKT PHOTONICS A/S
    Inventors: Jeppe Johansen, Ole Bang, Casper Larsen, Thomas Feuchter, Carsten L. Thomsen, Thomas Vestergaard Andersen
  • Patent number: 9829629
    Abstract: Photonic integrated circuits required connection to germanium doped silica cored optical fibers or silica cored and fluorine doped silica cladding optical fibers which have low index contrast and large mode field diameters. However, the optical waveguide within a photonic integrated circuit such as formed using silicon-on-insulator or compound semiconductors tends to be high index contrast and small mode field diameter. Accordingly, it is necessary to implement adiabatic waveguide tapers with a high coupling efficiency and small footprint in order to couple into the photonic integrated circuits to/from the optical fiber. Prior art tapers have been generally high loss and absorb valuable die footprint. In contrast the inventors demonstrate a small low loss waveguide taper designed using a methodology they refer to a “constant loss”.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: November 28, 2017
    Assignee: THE ROYAL INSTITUTION FOR THE ADVANCEMENT OF LEARNING/MCGILL UNIVERSITY
    Inventors: Alexandre Horth, Nathaniel Quitoriano
  • Patent number: 9812597
    Abstract: Some embodiments of the present disclosure provide an optical sensor. The optical sensor includes a semiconductive substrate. A light sensing region is on the semiconductive substrate. A waveguide region is configured to guide light from a wave insert portion through a waveguide portion and to a sample holding portion. The waveguide portion includes a first dielectric layer including a first refractive index. A second dielectric layer includes a second refractive index. The second refractive index is smaller than the first refractive index. A first interconnect portion is positioned in the waveguide portion, configured to transmit electrical signal from the light sensing region to an external circuit. The sample holding portion is over the light sensing region.
    Type: Grant
    Filed: August 11, 2015
    Date of Patent: November 7, 2017
    Assignee: PERSONAL GENOMICS, INC.
    Inventors: Teng-Chien Yu, Sheng-Fu Lin, Ming-Sheng Yang
  • Patent number: 9784918
    Abstract: An effective refractive index of a TM0 polarized wave guided through the first core when existing alone and an effective refractive index of a TE0 polarized wave guided through the second core when existing alone are continuous as a function of a distance from a starting point of a side-by-side arrangement section. A magnitude relationship between an effective refractive index of an odd mode of a TE0 polarized wave guided through the side-by-side arrangement section and an effective refractive index of an even mode of a TM0 polarized wave guided through the side-by-side arrangement section is reversed between the starting point and an ending point of the side-by-side arrangement section. A refractive index distribution is vertically asymmetrical in an interaction section. An emission edge surface and an emission edge surface cover an entrance edge surface without excess or deficiency.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: October 10, 2017
    Assignee: FUJIKURA LTD.
    Inventor: Akira Oka
  • Patent number: 9726821
    Abstract: An adiabatic elliptical optical coupler device is provided comprising: a substrate having an edge; a first waveguide on the substrate, the first waveguide comprising a constant-width region and a tapered region terminating at the edge of the substrate, the tapered region having a smaller width at the edge than at the constant-width region; and, a pair of second waveguides on the substrate, and located on either side of the tapered region, each of the pair of the second waveguides terminating at the edge at a first end and extending to a second end adjacent the constant-width region, and distal the first end; at least a portion of each of the pair of second waveguides being tapered, and optically coupled to the first waveguide to transition a mode of an optical signal in the first waveguide from an elliptical mode at the edge towards a confined mode.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: August 8, 2017
    Assignee: RANOVUS INC.
    Inventors: Kyle Murray, Dylan Logan, Christopher James Brooks, Ryan Murray Hickey
  • Patent number: 9722389
    Abstract: A laser system for generating optical pulses at an operating wavelength of the laser system. The system has an optical resonator comprising first and second reflectors, and a tapered optical fiber disposed between the first and second reflectors. The tapered optical fiber has a core which has a tapered input section which tapers from single mode to multimode at the laser operating wavelength, an inner section of substantially constant diameter capable of supporting multiple modes at the laser operating wavelength and a tapered output section which tapers from a first diameter to a second diameter that is smaller than the first diameter.
    Type: Grant
    Filed: February 11, 2015
    Date of Patent: August 1, 2017
    Assignee: NKT Photonics A/S
    Inventors: John Redvers Clowes, Jonathan William Gill, Stephen Green, Mridu Kalita, Adam Lee Devine, Anatoly Borisovich Grudinin
  • Patent number: 9717630
    Abstract: A steerable laser probe may include a handle, an actuation lever, an optic fiber, and a housing tube. The housing tube may have a first housing tube portion having a first stiffness and a second housing tube portion having a second stiffness. The second stiffness may be greater than the first stiffness. The optic fiber may be disposed within the housing tube and within an inner bore of the handle. An actuation of the actuation lever about a pivot pin of the handle may gradually curve the optic fiber. An actuation of the actuation lever about the pivot pin of the handle may gradually straighten the optic fiber.
    Type: Grant
    Filed: November 27, 2016
    Date of Patent: August 1, 2017
    Assignee: Katalyst Surgical, LLC
    Inventors: Gregg D Scheller, Matthew N Zeid, Craig Moore
  • Patent number: 9709736
    Abstract: A right angle waveguide having a square rod-type square lattice photonic crystal and a single compensation scattering rod having a high refractive index. The right angle waveguide is a photonic crystal formed from first dielectric rods having a high refractive index arranged in a background dielectric having a low refractive index according to a square lattice. In the photonic crystal, one row and one column of the first dielectric rods having the high refractive index are removed to form the right angle waveguide. A second dielectric rod having a high refractive index is arranged at a corner of the right angle waveguide, the second dielectric rod being the compensation scattering rod. The first dielectric rods are square rods having the high refractive index. The right angle waveguide has extremely low reflectance and a very high transmission rate, and facilitates large-scale optical path integration.
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: July 18, 2017
    Inventor: Zhengbiao Ouyang
  • Patent number: 9696498
    Abstract: A method of fabricating an optical coupling device, comprising forming a waveguide mask layer on a substrate platform, wherein the waveguide mask layer comprises an array of openings comprising a first end and a second end opposite to the first end, immersing the substrate platform into a salt melt comprising ions to form an array of waveguides in the substrate platform through an ion diffusion process, and controlling a rate of immersion such that a diffusion depth of the ions varies as a function of a distance in a direction from the first end to the second end, wherein the array of waveguides extends in the direction from the first end to the second end.
    Type: Grant
    Filed: May 4, 2015
    Date of Patent: July 4, 2017
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Jia Jiang
  • Patent number: 9690044
    Abstract: Provided is a waveguide mode converter (30) that converts a waveguide mode and that is placed in a transition area (connection section) (43) of a rib-type waveguide (50) and a channel-type waveguide (51). The rib-type waveguide (50) has a tapered section (23b). The tapered section (23b) constitutes a core layer (23) that extends on both sides of a rib (23a) and has a width (Wt) that changes gradually in a direction that is vertical to the waveguide direction.
    Type: Grant
    Filed: January 29, 2014
    Date of Patent: June 27, 2017
    Assignee: NEC Corporation
    Inventor: Takashi Matsumoto
  • Patent number: 9690043
    Abstract: An optical waveguide includes a waveguide core including a first region, a second region having a step at which a thickness varies, and a third region having a thickness smaller than that of the first region. The second region has thick film regions continuing with the first region and positioned at both sides in a widthwise direction. The thick film regions have a thickness that is equal to that of the first region and have a gradually reducing width from the first region side to the third region side. The second region further has a thin film region sandwiched by the thick film regions and continuing with the third region. The thin film region has a thickness equal to that of the third region.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: June 27, 2017
    Assignee: FUJITSU LIMITED
    Inventor: Takeshi Matsumoto
  • Patent number: 9671560
    Abstract: A spot size converter may include a tapered periodic segmented waveguide (PSW). The tapered PSW may include a plurality of waveguide segments defined by a plurality of gaps between the plurality of waveguide segments. The plurality of gaps may be at one or more angles that are not substantially parallel to a direction of a width of the tapered PSW. The direction of the width of the tapered PSW may be substantially perpendicular to a direction in which light passes through the tapered PSW.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: June 6, 2017
    Assignee: Lumentum Operations LLC
    Inventors: Barthelemy Fondeur, Hiroaki Yamada
  • Patent number: 9671285
    Abstract: A spectrometer comprises a substrate and a waveguide on the substrate, the waveguide including an elongate part and a tapered input for guiding electromagnetic radiation to the elongate part. The tapered input includes an input end for receiving the electromagnetic radiation and an output end coupled to the elongate part, the input end being wider than the output end. The spectrometer may further comprise a plurality of resonators coupled to the elongate part of the waveguide.
    Type: Grant
    Filed: October 9, 2012
    Date of Patent: June 6, 2017
    Assignee: ASTRIUM LIMITED
    Inventors: Stephen Sweeney, Yaping Zhang
  • Patent number: 9664850
    Abstract: An apparatus includes an optical fiber bundle that includes a plurality of input optical fibers and a tapered segment. One end of each of the input optical fibers physically connects to a wide end of the tapered segment. The optical fiber bundle is an integral unit. The input optical fibers are multimode optical fibers. Fundamental optical propagating modes of at least two of the multimode optical fibers have different velocities.
    Type: Grant
    Filed: December 29, 2014
    Date of Patent: May 30, 2017
    Assignee: Alcatel-Lucent USA Inc.
    Inventors: Nicolas K. Fontaine, Roland Ryf
  • Patent number: 9606415
    Abstract: A super-oscillatory lens (10) having a pre-defined pattern to spatially modulate the light beam in amplitude and/or phase which has a blocking element (6) formed integrally with the lens, or as a separate component adjacent to the lens, which is opaque to the light beam to cause diffraction of the light beam around the blocking element and formation of a shadow region (20). The lens and blocking element focus the light beam to form an elongate needle-shaped focus (15) in the shadow region (20). In any application in which it is necessary to scan a small spot over a surface, compared with a conventional objective lens focus the elongate shape of the focus relaxes the requirement on a feedback loop to maintain a constant separation between a scan head and a surface being scanned. The elongate shape is also ideal shape for materials processing applications.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: March 28, 2017
    Assignee: University of Southampton
    Inventors: Nikolay Ivanovich Zheludev, Salatore Savo, Tapashree Roy, Vassili Savinov, Mark Richard Dennis, Edward Thomas Foss Rogers, Jari Juhani Lindberg
  • Patent number: 9574911
    Abstract: A two-core optical fiber is provided for use in Brillouin distributed fiber sensor applications and systems. The two-core fiber includes a first and second core. Each core is configured to exhibit a Brillouin frequency shift greater than 30 Mhz relative to the other core. Further, each core possesses temperature and strain coefficients that differ from the other core. The cores can be configured to produce Brillouin frequency shift levels of at least 30 Mhz relative to one another. These differences in shift levels may be effected by adjustment of the material compositions, doping concentrations and/or refractive index profiles of each of the cores. These optical fibers may also be used in BOTDR- and BOTDA-based sensor systems and arrangements.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: February 21, 2017
    Assignee: Corning Incorporated
    Inventors: Brett Jason Hoover, Ming-Jun Li, Shenping Li
  • Patent number: 9557483
    Abstract: A fiber coupler is provided, which includes a tubular enveloping structure and several optical fibers arranged in the enveloping structure, each of which has a fiber core and a fiber cladding surrounding same, in order to conduct laser radiation, and each of which extends from the first as far as the second end of the enveloping structure. The enveloping structure includes a tapering section which is tapered in a first direction from the first as far as the second end. In the tapering section, both a first ratio of the diameter of the fiber core to the diameter of the fiber cladding and also a second ratio of the diameter of the mode field of the laser radiation conducted in the optical fiber to the diameter of the fiber core, increases in the first direction for each optical fiber.
    Type: Grant
    Filed: June 3, 2013
    Date of Patent: January 31, 2017
    Assignee: TRUMPF Laser GmbH
    Inventors: Marcin Kozak, Malte Kumkar, Peter Riedel, Hagen Zimer
  • Patent number: 9529154
    Abstract: The present disclosure generally relates to a method of optically coupling a photonic integrated circuit and an external optical component.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: December 27, 2016
    Assignees: IMEC VZW, Universiteit Gent
    Inventors: Geert Van Steenberge, Dries Van Thourhout, Günther Roelkens
  • Patent number: 9494738
    Abstract: Single mode fiber beam combiners are formed by extending single mode fibers through a glass ferrule, and tapering and fusing the fibers and the ferrule. Tapers can be selected so that optical power input to each of the single mode fibers remains partially guided by the single mode fiber cladding, or is guided by the multimode fiber formed by the glass ferrule and the fused fiber claddings. Such combiners can include double clad fibers or actively doped fibers for use in lasers or amplifiers.
    Type: Grant
    Filed: May 28, 2009
    Date of Patent: November 15, 2016
    Assignee: nLIGHT, Inc.
    Inventors: Jason N. Farmer, Robert G. Waarts, John Edgecumbe
  • Patent number: 9477043
    Abstract: An optical coupler includes a plurality of tapers, each of the taper-bases arranged substantially in a first plane to form a base of the optical coupler for connecting to a first optical waveguide, and the taper-tips arranged substantially non-overlapping in a second plane corresponding to a coupling facet for coupling with a second optical waveguide. This multi-taper coupler overcomes the energy loss of conventional techniques, allowing optical coupling between a variety of optical devices including optical fibers, waveguides, diodes, and switches. The multi-taper has increased information transmission efficiency, reduced loss of signal strength between coupled products, and is more robust to damage of the coupler, and the coupling area is larger than conventional couplers thereby reducing coupling complexity and increasing coupling probability.
    Type: Grant
    Filed: April 4, 2012
    Date of Patent: October 25, 2016
    Inventors: Ted Frumkin, Zeev Zalevsky
  • Patent number: 9465175
    Abstract: An integrated optical coupling device may include a substrate, a coating layer disposed on the substrate, and a prism disposed on the coating layer. The prism may include a first surface and a second surface. The integrated optical coupling device may also include a first lens disposed on the first surface of the prism, a second lens disposed on the second surface of the prism, and an anti-reflection coating layer disposed on the first lens and the second lens.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: October 11, 2016
    Assignee: SIFOTONICS TECHNOLOGIES CO., LTD.
    Inventors: Tuo Shi, Shipeng Yan, Nai Zhang, Dong Pan
  • Patent number: 9459407
    Abstract: A waveguide comprises an annular cross-section and a first numerical aperture (NA) at one end. The waveguide further comprises either an annular or circular cross-section at the other end, which has a second NA. The waveguide has a progressively-varying NA, which varies from the first NA (at one end) to the second NA (at the other end).
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: October 4, 2016
    Assignee: OFS FITEL, LLC
    Inventor: William R Holland
  • Patent number: 9453962
    Abstract: A beam combiner is disclosed that comprises a planar lightwave circuit that is based on undoped silicon nitride-based surface waveguides, wherein the planar lightwave circuit comprises a plurality of input ports, a mixing region, and an output port, and wherein the mixing region comprises a plurality of directional couplers that are arranged in a tree structure. Embodiments of the present invention are capable of combining a plurality of light signals characterized by disparate wavelengths on irregular spacings with low loss. Further, the present invention enables high-volume, low cost production of beam combiners capable of combining three or more light signals into a single composite output beam.
    Type: Grant
    Filed: September 19, 2014
    Date of Patent: September 27, 2016
    Assignee: OctroliX BV
    Inventors: Edwin Jan Klein, Ronald Dekker, Hindrik F. Bulthuis
  • Patent number: 9435950
    Abstract: A semiconductor optical device including: a substrate including a first region and a second region; a first optical waveguide disposed on the first region, the first optical waveguide including a core layer and a cladding layer disposed on the core layer, the cladding layer including a first cladding region and a semiconductor layer disposed on the first cladding region, the first optical waveguide extending from an end facet of the semiconductor optical device to a boundary between the first region and the second region; a second optical waveguide disposed on the second region; and a region disposed on the cladding layer, the region having a lower refractive index than that of the first cladding region. The semiconductor layer has a higher refractive index than that of the first cladding region. The thickness of the core layer monotonically increases from the end facet toward the boundary.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: September 6, 2016
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Naoya Kono, Kazuhiko Horino
  • Patent number: 9423550
    Abstract: The present invention provides a backlight module and a display device. The present invention can solve the problem that a hot spot in a marginal portion of a light guide plate results in non-uniform brightness of emitted light from a backlight module. The backlight module comprises a light guide plate and a plurality of light sources, the light guide plate comprising a light incident surface, the plurality of light sources being arranged opposite to the light incident surface of the light guide plate. The backlight module further comprises a light scattering unit arranged between the plurality of light sources and the light incident surface of the light guide plate, and the light scattering unit is used for scattering and irradiating light rays from the plurality of light sources to the light guide plate. The display device of the present invention comprises the backlight module as described above.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: August 23, 2016
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Jianwei Pan
  • Patent number: 9417186
    Abstract: Some embodiments of the present disclosure relate to an infrared (IR) opto-electronic sensor having a silicon waveguide implemented on a single silicon integrated chip. The IR sensor has a semiconductor substrate having a silicon waveguide extends along a length between a radiation input conduit and a radiation output conduit. The radiation input conduit couples radiation into the silicon waveguide, while the radiation output conduit couples radiation out from the silicon waveguide. The silicon waveguide conveys the IR radiation from the radiation input conduit to the radiation output conduit at a single mode. As the radiation is conveyed by the silicon waveguide, an evanescent field is formed that extends outward from the silicon waveguide to interact with a sample positioned between the radiation input conduit and the radiation output conduit.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: August 16, 2016
    Assignee: Infineon Technologies AG
    Inventors: Bernhard Jakoby, Ventsislav Lachiev, Thomas Grille, Peter Irsigler, Ursula Hedenig, Sokratis Sgouridis, Thomas Krotscheck Ostermann
  • Patent number: 9417391
    Abstract: An optical combiner includes a plurality of input optical fibers, an output optical fiber, and a bridge fiber optically coupled to the plurality of input optical fibers and the output optical fiber. The bridge fiber includes a tapered portion whose outer diameter is reduced toward the emission end, and the outer diameter of the emission end face of the bridge fiber is smaller than the cladding outer diameter of the incident end face of the output optical fiber.
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: August 16, 2016
    Assignee: FUJIKURA LTD.
    Inventor: Hironori Tanaka
  • Patent number: 9389380
    Abstract: Provided is an optical fiber assembly with which flexibility in the vicinity of an alignment member can be maintained, as well as a method for manufacturing this optical fiber assembly, and an optical probe which uses this optical fiber assembly. This optical fiber assembly is equipped with: multiple optical fibers (11, 12); an alignment member (10) that aligns and holds these multiple optical fibers (11, 12); a first adhesion part (20) where the alignment member (10) and the multiple optical fibers (11, 12) are adhered by means of a first adhesive agent having curability; and a second adhesion part (21) where the multiple optical fibers (11, 12) are adhered to each other within a prescribed distance from the rear end of the alignment member (10) by means of a second adhesive agent that cures while having greater flexibility than the first adhesive agent.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: July 12, 2016
    Assignee: Konica Minolta, Inc.
    Inventor: Junichi Jono
  • Patent number: 9369209
    Abstract: An apparatus comprising a first optical input coupler, having first and second input ports and first and second output ports. The optical input coupler can be configured to receive an optical input signal to the first input port. An optical power level ratio of a second optical output to first optical output transmitted from the second and the first output ports, respectively, equals about 2:1.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: June 14, 2016
    Assignee: Alcatel Lucent
    Inventor: Pietro Bernasconi
  • Patent number: 9345542
    Abstract: A steerable laser probe may include a handle having a handle distal end and a handle proximal end, an auto-fixing actuation control, a housing tube having a housing tube distal end and a housing tube proximal end, a first housing tube portion having a first stiffness, a second housing tube portion having a second stiffness, and an optic fiber disposed within an inner bore of the handle and the housing tube. An actuation of the auto-fixing actuation control may gradually curve the housing tube. A gradual curving of the housing tube may gradually curve the optic fiber.
    Type: Grant
    Filed: August 9, 2013
    Date of Patent: May 24, 2016
    Assignee: Katalyst Surgical, LLC
    Inventors: Gregg D Scheller, Matthew N Zeid
  • Patent number: 9348092
    Abstract: Mode size converter including an overlay waveguide having an input end configured to receive light from an optical element. The overlay waveguide has a first refractive index. The mode size converter also includes a signal waveguide that is embedded within the overlay waveguide and has a second refractive index that is greater than the first refractive index. The signal waveguide includes first and second arm segments and a stem segment that form a Y-junction. The first and second arm segments are configured to reduce a modal profile of the light propagating toward the stem segment from the input end of the overlay waveguide. Each of the first and second arm segments has a distal end and a pair of opposite side edges, wherein the pair of side edges extend parallel to each other between the corresponding distal end and the stem segment.
    Type: Grant
    Filed: November 10, 2014
    Date of Patent: May 24, 2016
    Assignee: Tyco Electronics Corporation
    Inventors: Tao Ling, Jonathan Lee
  • Patent number: 9311935
    Abstract: A method of forming a wave guide for a heat assisted magnetic recording slider of a disk drive includes depositing a layer of waveguide material onto a substrate, and depositing a layer of a hard mask material onto the waveguide material. The method then includes depositing a layer of photoresist onto the hard mask material, and exposing the photoresist to produce a hard mask pattern that includes a waveguide pattern. The method also includes stripping the photoresist material leaving the hard mask pattern having a first line edge roughness. The method also includes removing the waveguide material not covered by the hard mask, the waveguide having sidewalls which having a line edge roughness which is substantially equal to the first line edge roughness. Also disclosed is an apparatus for accomplishing the method.
    Type: Grant
    Filed: November 7, 2013
    Date of Patent: April 12, 2016
    Assignee: HGST Netherlands B.V.
    Inventors: Thomas William Clinton, Kanaiyalal Chaturdas Patel, Vijay Prakash Singh Rawat, Sue Siyang Zhang
  • Patent number: 9310563
    Abstract: A system for chromatic dispersion compensation is presented. The system includes an optical splitting element, a plurality of optical elements, and a plurality of waveguides. The optical splitting element is configured to generate at least a first beam of radiation and a second beam of radiation. The plurality of optical elements is configured to identify one or more optical paths amongst a plurality of optical paths for the first beam of radiation to travel. One of the plurality of waveguides disposed in one of the plurality of optical paths has group delay and dispersion coefficient properties per unit length that are different from group delay and dispersion coefficient properties per unit length of another one of the plurality of waveguides disposed in another one of the plurality of optical paths. The group delay and dispersion coefficient properties per unit length compensate for a chromatic dispersion associated with the second beam of radiation.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: April 12, 2016
    Assignee: Medlumics S.L.
    Inventors: José Luis Rubio Guivernau, Eduardo Margallo Balbás
  • Patent number: 9268095
    Abstract: A low mode beam combiner (10) including individual entry fibers (12) that maintain a low mode operation, an exit fiber (16), and a spliced section (14) including a bundle of spliced entry fibers (12), in which a bundle diameter is reduced to a LMA (large mode area) core of the exit fiber (16).
    Type: Grant
    Filed: January 4, 2011
    Date of Patent: February 23, 2016
    Assignee: Soreq Nuclear Research Center
    Inventors: Yariv Shamir, Yoav Sintov
  • Patent number: 9229293
    Abstract: A method for manufacturing a semiconductor optical device includes the steps of growing a stacked layer including lower and upper core layers, a first upper region including a non-doped layer, a second upper region including a p-type layer, and a cap layer; forming an upper mesa by etching the stacked layer; selectively etching the cap layer in the upper mesa on the first and second regions; forming a mask on the upper mesa in the second and third regions; and etching the upper mesa using the mask so as to form first to fourth mesa portions. The first and fourth mesa portions are formed by etching the first and second upper regions, and the second upper region and the cap layer, respectively. The second and third mesa portions are formed by etching the first and second upper regions, and the second upper region and the cap layer, respectively.
    Type: Grant
    Filed: August 8, 2014
    Date of Patent: January 5, 2016
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Naoya Kono, Hideki Yagi, Takamitsu Kitamura