公开(公告)号：US09869815B2

公开(公告)日：2018-01-16

申请号：US15093833

申请日：2016-04-08

Applicant: Oki Electric Industry Co., Ltd. ,  National Institute Of Advanced Industrial Science And Technology ,  Photonics Electronics Technology Research Association

Inventor： Hideki Ono ,  Tsuyoshi Horikawa ,  Naoki Hirayama

IPC: G02B6/12 ,  G02B6/122 ,  G02B6/136 ,  G02B6/30 ,  G02B6/34 ,  G02B6/124 ,  G02B6/126

CPC classification number: G02B6/1228 ,  G02B6/12002 ,  G02B6/124 ,  G02B6/126 ,  G02B6/136 ,  G02B6/305 ,  G02B6/34 ,  G02B2006/12061 ,  G02B2006/12147

Abstract: An optical device includes an optical waveguide provided on a principal surface of a substrate. The optical waveguide includes a core and a cladding provided around the core. The cladding is configured by a substance having a refractive index smaller than 71.4% of the refractive index of the core. The core has constituent atoms substantially forming a diamond lattice structure. The optical waveguide has a light input/output part through which a light beam is input and/or output. The light input/output part decreases stepwise in thickness towards an output end while tapering down in its width. The core is provided in the light input/output part to have a (111) plane or an equivalent plane to the (111) plane exposed on a face of a riser of the stepwise thickness of the light input/output part.

公开(公告)号：US09851504B2

公开(公告)日：2017-12-26

申请号：US15281366

申请日：2016-09-30

Applicant: FUJIKURA LTD.

Inventor： Akira Oka

IPC: G02B6/126 ,  G02B6/122 ,  G02B6/14 ,  G02B6/125 ,  G02B6/12

CPC classification number: G02B6/126 ,  G02B6/122 ,  G02B6/1228 ,  G02B6/125 ,  G02B6/14 ,  G02B2006/12097

Abstract: A planar optical waveguide device includes: a substrate; a core that forms a first waveguide and a second waveguide that are arranged in parallel on the substrate; and a cladding that covers the core and has a refractive index smaller than that of the core. The core includes a first rib portion that forms the first waveguide, a second rib portion that forms the second waveguide, and a slab portion that is provided only on one side of the first rib portion and the second rib portion in a width direction to have a thickness smaller than the thicknesses of the first rib portion and the second rib portion and is shared between the first rib portion and the second rib portion.

公开(公告)号：US09823417B2

公开(公告)日：2017-11-21

申请号：US15324781

申请日：2015-07-06

Applicant: IXBLUE

Inventor： Pascal Simonpietri ,  Stephane Chouvin ,  Cedric Molucon

IPC: G02B6/27 ,  G02B6/126 ,  G02B5/30 ,  G02B6/024 ,  G02B6/30

CPC classification number: G02B6/2706 ,  G01D5/35322 ,  G02B5/3033 ,  G02B6/024 ,  G02B6/126 ,  G02B6/2726 ,  G02B6/2766 ,  G02B6/30

Abstract: Disclosed is a waveguide polarizing optical device, including a first waveguide polarizer (6), a section of a second optical waveguide (31) and a second thin-plate polarizer (52) having a physical thickness T and a refractive index n, the second thin-plate polarizer (52) being disposed on the optical path between a waveguide end (8) of the first polarizer (6) and one end (32) of the second optical waveguide (31), the physical distance d between the waveguide end (8) of the first polarizer (6) and the end (32) of the second optical waveguide (31) being less than or equal to twice the Rayleigh length and the physical thickness T of the second polarizer (52) being less than or equal to the physical distance d.

公开(公告)号：US20170329080A1

公开(公告)日：2017-11-16

申请号：US15592774

申请日：2017-05-11

Applicant: Luxtera, Inc.

Inventor： Subal Sahni ,  Gianlorenzo Masini ,  Attila Mekis

IPC: G02B6/122 ,  G02B6/27 ,  G02B6/124 ,  G02B6/126 ,  G02B6/125 ,  H04B10/69 ,  G02B6/42 ,  H04B10/25 ,  G02B6/12

CPC classification number: G02B6/122 ,  G02B6/12004 ,  G02B6/1228 ,  G02B6/124 ,  G02B6/125 ,  G02B6/126 ,  G02B6/2773 ,  G02B6/4215 ,  G02B6/4286 ,  G02B2006/12123 ,  H04B10/25 ,  H04B10/40 ,  H04B10/691 ,  H04B10/801

Abstract: Methods and systems for integrated multi-port waveguide photodetectors are disclosed and may include an optical receiver on a chip, where the optical receiver comprises a multi-port waveguide photodetector having three or more input ports. The optical receiver may be operable to receive optical signals via one or more grating couplers, couple optical signals to the photodetector via optical waveguides in the chip, and generate an output electrical signal based on the coupled optical signals using the photodetector. The photodetector may include four ports coupled to two PSGCs. The optical signals may be coupled to the photodetector via S-bends and/or tapers at ends of the optical waveguides. A width of the photodetector on sides that are coupled to the optical waveguides may be wider than a width of the optical waveguides coupled to the sides. Optical signals may be mixed with local oscillator signals using the multi-port waveguide photodetector.

公开(公告)号：US20170315294A1

公开(公告)日：2017-11-02

申请号：US15524005

申请日：2015-11-03

Applicant: CONSORZIO NAZIONALE INTERUNIVERSITARIO PER LE TELECOMUNICAZIONI (CNIT)

Inventor： Luciano SOCCI ,  Marco ROMAGNOLI

IPC: G02B6/126 ,  G02B6/122 ,  G02B6/12

CPC classification number: G02B6/126 ,  G02B6/1228 ,  G02B6/14 ,  G02B2006/12116

Abstract: In an integrated polarization splitting and rotating photonic device comprising at least one first waveguide; a second waveguide, both said waveguides extending from an input section to an output section; a top cladding; a bottom cladding and a symmetry-breaking layer so as to form an optical guiding structure in a wafer chip, said top and bottom claddings extending throughout the whole optical guiding structure sandwiching said waveguides therebetween, said symmetry-breaking layer extends in the optical guiding structure at least over the whole guiding structure length, and, at the input section, the at least one first waveguide core has a predetermined width through the optical guiding structure to the output section, receiving an input light signal, and further, the second waveguide core, both at the input and the output section, has a width narrower than said predetermined width of the first waveguide core; so that the optical guiding structure guides a first mode substantially confined within said at least one first waveguide core and a second mode substantially confined within said second semiconductor waveguide core said first and said second modes having the same polarization at the output section.

公开(公告)号：US09791623B2

公开(公告)日：2017-10-17

申请号：US12957319

申请日：2010-11-30

Applicant: Robert Magnusson ,  Mehrdad Shokooh-Saremi

Inventor： Robert Magnusson ,  Mehrdad Shokooh-Saremi

IPC: G02B6/126 ,  G02B5/08 ,  G02B5/20 ,  G02B5/28 ,  G02B5/18 ,  G02B6/124 ,  G02B5/30 ,  G02B6/14 ,  G02B6/12

CPC classification number: G02B6/126 ,  G02B5/0833 ,  G02B5/1823 ,  G02B5/203 ,  G02B5/285 ,  G02B5/288 ,  G02B5/3041 ,  G02B6/124 ,  G02B6/14 ,  G02B2006/12038 ,  G02B2006/12061

Abstract: Multilevel leaky-mode optical elements, including reflectors, polarizers, and beamsplitters. Some of the elements have a plurality of spatially modulated periodic layers coupled to a substrate. For infrared applications, the optical elements may have a bandwidth larger than 600 nanometers.

公开(公告)号：US20170293077A1

公开(公告)日：2017-10-12

申请号：US15515594

申请日：2015-09-28

Applicant: SHENZHEN UNIVERSITY

Inventor： Zhengbiao OUYANG ,  Hao HUANG

IPC: G02B6/122 ,  G02B6/126 ,  G02B6/125

CPC classification number: G02B6/1225 ,  G02B6/125 ,  G02B6/126

Abstract: A right-angle bending waveguide includes a circular-hole-type square-lattice photonic crystal (PhC) and a single compensation scattering rod having a low refractive index. The right-angle bending waveguide is a PhC formed from first dielectric rods having a low refractive index arranged in a background dielectric having a low refractive index according to a square lattice. In the PhC, one row and one column of the first dielectric rods having a high refractive index are removed to form the right-angle bending waveguide. A second dielectric rod having a high refractive index is arranged at a corner of the right-angle bending waveguide. The second dielectric rod is the compensation scattering rod or an air hole. The first dielectric rods are circular rods having the low refractive index or air holes. The right-angle bending waveguide having the circular-hole-type square-lattice PhC and the single compensation scattering rod having the low refractive index has extremely low reflectance and a very high transmission rate, facilitates large-scale optical path integration, and provides a broader space for PhC application.

公开(公告)号：US20170279539A1

公开(公告)日：2017-09-28

申请号：US15444532

申请日：2017-02-28

Applicant: FUJITSU LIMITED ,  Photonics Electronics Technology Research Association

Inventor： Shinsuke Tanaka

IPC: H04B10/61 ,  G02B6/30 ,  G02B6/126 ,  G02B6/124 ,  H04J14/02 ,  H04B10/079

CPC classification number: H04B10/614 ,  G02B6/124 ,  G02B6/126 ,  G02B6/29301 ,  G02B6/2938 ,  G02B6/305 ,  H04B10/0795 ,  H04B10/616 ,  H04B10/673 ,  H04J14/02 ,  H04J14/0254

Abstract: The invention relates to a wavelength division multiplexing optical receiver that is provided with a polarization splitting grating coupler and a driving method for the same, where the power consumption is reduced, and at the same time, a degradation in the receiver sensitivity is suppressed. Two monitor photodetectors configured to monitor the light intensity of a first polarization component and a second polarization component separated by a polarization splitting optical coupler are provided, and a control circuit is provided in order to allow a semiconductor optical amplifier that amplifies the first polarization component and another semiconductor optical amplifier that amplifies the second polarization component in accordance with the signal intensity ratio of the two monitor photodetectors to amplify light with different light gains.

公开(公告)号：US09746609B2

公开(公告)日：2017-08-29

申请号：US14944562

申请日：2015-11-18

Applicant: Coriant Advanced Technology LLC

Inventor： Yangjin Ma ,  Michael J. Hochberg ,  Ruizhi Shi ,  Yang Liu

IPC: G02B6/00 ,  G02B6/126 ,  G02B6/122 ,  G02B6/14 ,  G02B6/125 ,  G02B6/12

CPC classification number: G02B6/126 ,  G02B6/122 ,  G02B6/1228 ,  G02B6/125 ,  G02B6/14 ,  G02B2006/12061 ,  G02B2006/12078 ,  G02B2006/12097 ,  G02B2006/12116

Abstract: A low loss high extinction ratio on-chip polarizer is disclosed. The polarizer is formed of a mode convertor followed by a mode squeezer and a dump waveguide, and may be configured to pass a desired waveguide mode and reject undesired modes. An embodiment is described that transmits a TE0 mode while blocking a TM0 mode by converting the TM0 mode into a higher-order TEn mode in a waveguide taper, squeezing out the TEn mode in a second waveguide taper to lessen its confinement, and then dumping the TEn mode in a waveguide bend that is configured to pass the TE0 mode.

公开(公告)号：US09726822B1

公开(公告)日：2017-08-08

申请号：US15441611

申请日：2017-02-24

Applicant: Fujikura Ltd.

Inventor： Kensuke Ogawa

IPC: G02F1/035 ,  G02B6/125 ,  G02B6/126 ,  G02F1/225 ,  G02F1/01 ,  G02B6/12 ,  G02F1/21

CPC classification number: G02B6/125 ,  G02B6/126 ,  G02B6/2766 ,  G02B2006/1215 ,  G02F1/0123 ,  G02F1/2257 ,  G02F2001/212 ,  G02F2201/06 ,  G02F2201/58 ,  G02F2203/07

Abstract: An optical integrated circuit includes: a mode conversion and branching section that launches light from a first optical waveguide to a second optical waveguide, converts light from the first optical waveguide into converted light, and launches the converted light to a third optical waveguide; an optical multiplexing and branching section that multiplexes lights from the second and third optical waveguides into one multiplexed light component, and branches the multiplexed light component into a light component to be input to a fourth optical waveguide and a light component to be input to a fifth optical waveguide; a phase modulation section that is provided in at least one of the fourth and fifth optical waveguides and modulates a phase of guided light; and an optical multiplexing section that multiplexes light components from the fourth and fifth optical waveguides into one light component.