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    Optical mode-size converter
    3.
    发明授权
    Optical mode-size converter 有权

    公开(公告)号：US12055757B2

    公开(公告)日：2024-08-06

    申请号：US17438843

    申请日：2020-03-13

    申请人： LiGenTec SA

    发明人： Michael Geiselmann ,  Michael Zervas ,  Davide Sacchetto ,  Anton Stroganov

    IPC分类号： G02B6/14 ,  G02B6/12 ,  G02B6/122

    CPC分类号： G02B6/14 ,  G02B6/1223 ,  G02B6/1228 ,  G02B2006/12061 ,  G02B2006/12152 ,  G02B2006/12176 ,  G02B2006/12195

    摘要： An optical mode-size converter is presented, which includes a guiding portion, a first strip with a first refractive index, and a second strip with a second refractive index. The first refractive index and the second refractive index are higher than a refractive index of the guiding portion, and a section of the first strip and a section of the second strip overlap to form an evanescent coupling region. The optical mode-size converter further comprises a coupling layer disposed between the first strip and the second strip within the evanescent coupling region, wherein the refractive index of the coupling layer is larger than the refractive index of the guiding portion and smaller than the first refractive index and the second refractive index.

    Optical spectrometer with high-efficiency optical coupling
    5.
    发明授权
    Optical spectrometer with high-efficiency optical coupling 有权

    公开(公告)号：US12019272B2

    公开(公告)日：2024-06-25

    申请号：US17713770

    申请日：2022-04-05

    申请人： Oak Analytics Inc.

    发明人： Ruibo Wang ,  James F. Gass

    IPC分类号： G02B6/14 ,  G01J3/04 ,  G01J3/44

    CPC分类号： G02B6/14 ,  G01J3/04 ,  G01J3/4412

    摘要： One embodiment provides an optical spectrometer. The optical spectrometer can include a lens-and-filter system configured to collect light scattered from a sample, a spot converter configured to convert a substantially circular beam outputted from the lens-and-filter system into a substantially rectangular beam, and a slit comprising a rectangular aperture to allow a predetermined portion of the substantially rectangular beam to enter the rectangular aperture while blocking noise. The slit can further include at least one microelectromechanical systems (MEMS)-based movable structure configured to adjust a width of the rectangular aperture.

    Integrated photonics vertical coupler based on subwavelength grating
    6.
    发明授权
    Integrated photonics vertical coupler based on subwavelength grating 有权

    公开(公告)号：US11815718B2

    公开(公告)日：2023-11-14

    申请号：US17531441

    申请日：2021-11-19

    申请人： Honeywell International Inc.

    发明人： Matthew Wade Puckett ,  Chad Fertig ,  Steven Tin

    IPC分类号： G02B6/124 ,  G02B6/14 ,  G02B6/34 ,  G02B6/12

    CPC分类号： G02B6/124 ,  G02B6/12002 ,  G02B6/14 ,  G02B6/34

    摘要： Techniques relating to an improved optical waveguide are described. The optical waveguide includes an upper and lower waveguide that each comprise a first and second layer, in which photons are transferred from the lower waveguide to the upper waveguide. A structured subwavelength coupling region is included, for example, in the first upper waveguide layer. The fill factor of the subwavelength grating coupling region is increased in the direction of light propagation to increase the index of refraction of the structured subwavelength coupling region and therefore improve photon transfer from the lower waveguide. Additionally, the width of the optical waveguide (at least along the structured subwavelength coupling region) remains constant as the fill factor increases.

    OPTICAL WAVEGUIDE COUPLING USING FABRICATED WAVEGUIDE COUPLING STRUCTURES
    7.
    发明公开
    OPTICAL WAVEGUIDE COUPLING USING FABRICATED WAVEGUIDE COUPLING STRUCTURES 审中-公开

    公开(公告)号：US20230266536A1

    公开(公告)日：2023-08-24

    申请号：US18308192

    申请日：2023-04-27

    申请人： Ciena Corporation

    发明人： Kelvin Prosyk ,  Ronald Richard Millett

    IPC分类号： G02B6/26 ,  G02B6/14 ,  G02B6/136 ,  G02B6/02

    CPC分类号： G02B6/26 ,  G02B6/02 ,  G02B6/136 ,  G02B6/14

    摘要： First and second waveguide structures are coupled to a waveguide coupling structure, the first waveguide structure comprising a first guiding core structure formed on a first cladding structure, and a second cladding structure formed on the first guiding core structure. The first and second waveguide structures have respective guiding ridges. The second waveguide structure comprises a second guiding core structure formed on a third cladding structure, and a fourth cladding structure formed on the second guiding core structure. The waveguide coupling structure comprises a transition structure, a multimode interference structure between the transition structure and the second waveguide structure, and an electrode over at least a portion of the guiding ridge within the second cladding structure and over at least a portion of the transition structure.

    ACTIVE-PASSIVE PHOTONIC INTEGRATED CIRCUIT PLATFORM
    9.
    发明公开
    ACTIVE-PASSIVE PHOTONIC INTEGRATED CIRCUIT PLATFORM 审中-公开

    公开(公告)号：US20230244034A1

    公开(公告)日：2023-08-03

    申请号：US17573916

    申请日：2022-01-12

    申请人： Aditya Malik ,  Tin Komljenovic ,  Hyun Dai Park

    发明人： Aditya Malik ,  Tin Komljenovic ,  Hyun Dai Park

    IPC分类号： G02B6/14 ,  G02B6/122 ,  G02B6/13

    CPC分类号： G02B6/14 ,  G02B6/13 ,  G02B6/1228 ,  G02B2006/12142

    摘要： A device has a plurality of waveguide structures including two active (one of which comprises two sub-layers), two passive, and three intermediate waveguide structures on a common substrate. At least partial butt coupling between active and intermediate waveguide structures, and tapering in the intermediate and/or passive waveguide structures at each junction therebetween facilitates efficient optical mode transformations as optical signals travel through the device, either from a first sub-layer of the first active waveguide structure through the other sub-layer, then sequentially though a first intermediate waveguide structure, a passive waveguide structure, a second intermediate waveguide structure, a second active waveguide structure, a third intermediate structure, and a second passive waveguide structure; or in reverse from the second passive waveguide structure back through to the first sub-layer of the first active waveguide structure. Lithographic alignment marks facilitate precise mutual alignments between layers defining each of the waveguide structures.

    Mode converter for optical fiber-to-thin film lithium niobate coupling
    10.
    发明授权
    Mode converter for optical fiber-to-thin film lithium niobate coupling 有权

    公开(公告)号：US11709320B2

    公开(公告)日：2023-07-25

    申请号：US17590196

    申请日：2022-02-01

    申请人： Photonic Systems, Inc.

    发明人： Edward Wooten

    IPC分类号： G02B6/30 ,  G02B6/122 ,  G02B6/14 ,  G02B6/12

    CPC分类号： G02B6/305 ,  G02B6/12004 ,  G02B6/1228 ,  G02B6/14

    摘要： An optical mode converter includes a silicon substrate and a silicon dioxide film deposited on a top surface of the silicon substrate. A lithium niobate waveguide positioned on the silicon dioxide film having a slab and a rib that both taper in a direction of beam propagation through the optical mode converter. A doped silicon dioxide waveguide is positioned on top of the lithium niobate waveguide and has a slab that tapers in the direction of the optical beam propagation through the optical mode converter. The optical mode converter expands an optical mode of the optical beam propagating through the optical mode converter from a first optical mode size to a second optical mode size.