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公开(公告)号：US10310159B2
公开(公告)日：2019-06-04
申请号：US15737386
申请日：2016-06-01
Inventor： Shigeo Nagashima , Yoshiteru Jinnouchi , Takashi Nakayama , Hiroki Kawashiri , Ikuo Ogawa , Yusuke Nasu , Shunichi Soma
Abstract: In the case of implementing a polarization separation circuit, a polarization rotator, and the like by inserting a thin-film element into a substrate in one optical interference circuit, one common large-sized groove shared among a plurality of thin-film elements for their insertion has been formed. The optical waveguide type device of the present invention is configured such that at least one groove intersects only one corresponding optical waveguide for inserting the thin-film element and does not intersect other optical waveguides adjacent to the one corresponding optical waveguide. This groove substantially has a rectangular shape, and has a minimum size adapted to the thin-film element to be inserted so as to stably hold and fix the thin-film element in the groove. Adjacent grooves are formed so as to be arranged such that their portions in a direction substantially vertical to the optical waveguide are facing each other.
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公开(公告)号：US20190154920A1
公开(公告)日：2019-05-23
申请号：US16092110
申请日：2016-04-08
Applicant: Hewlett packand Enterprise Development LP
Inventor： Joaquin Matres , Wayne Victor Sorin , Stanley Cheung , Sagi Varghese Mathai , Michael Renne Ty Tan
Abstract: In the examples provided herein, a polarization diversity receiver system includes a loop waveguide, and a two-dimensional grating coupler formed on the loop waveguide to couple light impinging on the grating coupler having a first polarization into the loop waveguide in a first direction, and to couple light having a second polarization orthogonal to the first polarization into the loop waveguide in a second direction. The system also includes a first output waveguide positioned near the loop waveguide in a first coupling region, a first distributed perturbation having a first resonant wavelength in the first coupling region to cause coupling of light at the first resonant wavelength between the loop waveguide and the first output waveguide, and a first photodetector to detect light propagating out of a first end and a second end of the first output waveguide.
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公开(公告)号：US10267995B2
公开(公告)日：2019-04-23
申请号：US15689121
申请日：2017-08-29
Applicant: FUJIKURA LTD.
Inventor： Shinichi Sakamoto , Kazuhiro Goi , Norihiro Ishikura
Abstract: In order to reduce a high frequency loss of a substrate-type optical waveguide without facilitating, in a low frequency domain, a reflection by an entrance end of a traveling-wave electrode, the substrate-type optical waveguide includes a coplanar line, provided on an upper surface of an upper cladding, which includes (i) a traveling-wave electrode connected to a P-type semiconductor region and (ii) an earth conductor connected to an N-type semiconductor region. The traveling-wave electrode and the earth conductor are provided so that a distance D therebetween decreases as a distance from an entrance end of the traveling-wave electrode increases.
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公开(公告)号：US20190094463A1
公开(公告)日：2019-03-28
申请号：US16184333
申请日：2018-11-08
Applicant: FURUKAWA ELECTRIC CO., LTD.
Inventor： Junichi Hasegawa
Abstract: A disclosed optical waveguide element includes a cladding portion formed on a substrate; an optical waveguide which is formed inside the cladding portion and has a refractive index higher than that of the cladding portion; an optical filter which is inserted into a slit formed in the cladding portion to divide the optical waveguide into a first optical waveguide and a second optical waveguide; and a first thin film element which is inserted into the slit along with the optical filter and is provided with a first thin film lens, wherein the first thin film lens provided in the first thin film element converges light that has propagated through the first optical waveguide and outputs into the slit into the second optical waveguide.
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公开(公告)号：US20190049664A1
公开(公告)日：2019-02-14
申请号：US16156601
申请日：2018-10-10
Applicant: STMicroelectronics (Crolles 2) SAS
Inventor： Frederic Boeuf , Charles Baudot
Abstract: A three-dimensional photonic integrated structure includes a first semiconductor substrate and a second semiconductor substrate. The first substrate incorporates a first waveguide and the second semiconductor substrate incorporates a second waveguide. An intermediate region located between the two substrates is formed by a one dielectric layer. The second substrate further includes an optical coupler configured for receiving a light signal. The first substrate and dielectric layer form a reflective element located below and opposite the grating coupler in order to reflect at least one part of the light signal.
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Patent Agency Ranking
公开(公告)号：US20190007157A1
公开(公告)日：2019-01-03
申请号：US15637905
申请日：2017-06-29
Applicant: Cisco Technology, Inc.
Inventor： Sean P. ANDERSON
Abstract: The present disclosure discloses a photonic chip. The photonic chip receives a first optical signal and a second optical signal with different wavelengths from two optical sources, respectively. The photonic chip includes a polarization multiplexing element (PME). The PME receives the first and the second optical signals from the first and the second optical sources respectively and combines the first and the second optical signals into a single optical path. The PME polarizes the first optical signal to have a different polarization than the second optical signal and transmits the combined first and the second optical signals in a common waveguide.
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公开(公告)号：US10133097B2
公开(公告)日：2018-11-20
申请号：US15718350
申请日：2017-09-28
Applicant: OHIO STATE INNOVATION FOUNDATION
Inventor： Ronald M. Reano , Peng Sun , Qiang Xu
Abstract: An example optical polarization controller can include a substantially planar substrate and a waveguide unit cell formed on the substantially planar substrate. The waveguide unit cell can include a first out-of-plane waveguide portion and a second out-of-plane waveguide portion coupled to the first out-of-plane waveguide portion. Each of the first and second out-of-plane waveguide portions can respectively include a core material layer arranged between a first optical cladding layer having a first stress-response property and a second optical cladding layer having a second stress-response property. The first and second stress-response properties can be different such that each of the first and second out-of-plane waveguide portions is deflected by a deflection angle.
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公开(公告)号：US10127938B2
公开(公告)日：2018-11-13
申请号：US15784429
申请日：2017-10-16
Applicant: Seagate Technology LLC
Inventor： Aidan Dominic Goggin , Kelly Elizabeth Hamilton , Paula Frances McElhinney , Fadi El Hallak
IPC: G11B11/00 , G11B5/48 , G02B6/136 , G02B6/132 , G02B6/122 , G02B6/126 , G02B6/27 , G11B11/105 , G11B5/60 , G11B7/1387 , G11B5/00
Abstract: An apparatus includes an input coupler configured to receive light excited by a light source. A near-field transducer (NFT) is positioned at a media-facing surface of a write head. A layered waveguide is positioned between the input coupler and the NFT and configured to receive the light output from the input coupler in a transverse electric (TE) mode and deliver the light to the NFT in a transverse magnetic (TM) mode. The layered waveguide comprises a first layer extending along a light-propagation direction. The first layer is configured to receive light from the input coupler. The first layer tapers from a first cross track width to a second cross track width where the second cross track width is narrower than the first cross track width. The layered waveguide includes a second layer that is disposed on the first layer. The second layer has a cross sectional area in a plane perpendicular to the light propagation direction that increases along the light propagation direction. The cross sectional area of the second layer is smaller proximate to the input coupler and larger proximate to the NFT.
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公开(公告)号：US20180299617A1
公开(公告)日：2018-10-18
申请号：US15490420
申请日：2017-04-18
Applicant: NeoPhotonics Corporation
Inventor： Anthony J. Ticknor , Brian R. West
CPC classification number: G02B6/125 , G02B6/1228 , G02B6/126 , G02B2006/1215
Abstract: Planar waveguide junctions are described with a waggled transition section connecting input waveguide sections with output waveguides sections, in which the waggled transitions have alternating segments matching the input waveguide and output waveguides to efficiently transition the optical signal. The planar waveguide junctions can be used to form efficient optical splitters, mixers, or taps.
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公开(公告)号：US20180284348A1
公开(公告)日：2018-10-04
申请号：US15881428
申请日：2018-01-26
Applicant: INPHI CORPORATION
Inventor： Jie LIN
Abstract: A waveguide-based polarization splitter-rotator (PSR) includes a converter with tapered rib-structure configured to convert TM0/TE0 polarization mode of an input light to a TE1/TE0 mode, a splitter coupled to the first plane for splitting the input light evenly to a first wave at a first port and a second wave at a second port. Furthermore, the PSR includes a phase shifter having a first arm coupled to first port and a second arm coupled to the second port. The first arm guides the first wave to a third port with no phase shift while the second arm adds 90 or 270 degrees to the second wave. The PSR also includes a 2×2 MMI coupler for coupling the first wave and the second wave to output a first output light in TE0 mode exclusively from TM0 mode and a second output light in TE0 mode exclusively from TE0 mode.
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