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公开(公告)号：WO2023026572A1
公开(公告)日：2023-03-02
申请号：PCT/JP2022/016584
申请日：2022-03-31
申请人： 株式会社村田製作所
摘要： 第１ブロックは、第１屈折率を有しており、第１反射面を有している。第１光吸収部材は、第１特定波長を有する光を吸収する第１金属イオンを含んでおり、第１屈折率と異なる第２屈折率を有している。第１緩衝層は、第１屈折率と第２屈折率との間の値を有する第３屈折率を有している。第１光吸収部材、第１緩衝層及び第１ブロックは、第１方向にこの順に並んでいる。第１緩衝層は、第１光吸収部材及び第１ブロックに接している。第１ブロックは、第１方向に進行する光を第１反射面において第１方向と異なる第２方向に反射する。
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公开(公告)号：WO2023017048A1
公开(公告)日：2023-02-16
申请号：PCT/EP2022/072376
申请日：2022-08-09
申请人： UNIVERSITEIT GENT , IMEC VZW
发明人： BOGAERTS, Wim , VAN ISEGHEM, Lukas
摘要： An optical antenna comprising a waveguide structure comprising a waveguide core and a waveguide fin intersecting substantially under a right angle, wherein: − a height of the waveguide fin (120) is larger than a height of the waveguide core (110); and − the width of the waveguide core (110) is equal to or larger than twice a height of the waveguide core (110); and − the height of the waveguide fin (120) is equal to or larger than twice a width of the waveguide fin (120); and wherein the waveguide fin is off-centered with respect to the waveguide core at an offset, thereby forming an optical antenna configured to leak radiation in a radiation direction. Further example embodiments relate to an optical phased antenna array comprising a plurality of such optical antennas arranged in an array configuration.
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公开(公告)号：WO2022269361A1
公开(公告)日：2022-12-29
申请号：PCT/IB2022/000373
申请日：2022-06-24
发明人： LEE, Brian, S. , SCOFIELD, Adam , DRISCOLL, Jeffrey , GROTE, Richard , GONDARENKO, Alexander , LEE, Yi Ho , TRITA, Andrea
IPC分类号： G02B6/12 , G02B6/125 , G02B6/28 , G02B27/48 , G02B6/12004 , G02B6/12007 , G02B6/2813
摘要： A transmitter photonic integrated circuit (PIC) for generating an optical signal for optical spectroscopy of a surface, the transmitter PIC comprising: One or more coherent light source(s); a homogenizer, the homogenizer comprising a planar waveguide device and/or an optical phased array (OP A) which receives light from the coherent light source(s) and generates interference to produce multiple statistically uncorrelated speckle patterns that are combined to provide the optical output.
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公开(公告)号：WO2022184869A1
公开(公告)日：2022-09-09
申请号：PCT/EP2022/055487
申请日：2022-03-03
发明人： THOMAS, Abu , TRITA, Andrea , DRISCOLL, Jeffrey
摘要： A waveguide mode filter. In some embodiments, the waveguide mode filter includes a first section of waveguide. The first section may have: a first end; a second end; a rate of change of curvature having a magnitude not exceeding 15/mm2 within the first section; a curvature having a magnitude of at most 0.03/mm at the first end; and a curvature having a magnitude of at least 0.1/mm at the second end.
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公开(公告)号：WO2022071283A1
公开(公告)日：2022-04-07
申请号：PCT/JP2021/035550
申请日：2021-09-28
申请人： 住友大阪セメント株式会社
摘要： 小型かつ低光損失で長期安定性を有する光導波路素子を提供すること。 第一の基板（２）に光導波路Ａ（２０）が形成され、前記第一の基板の端部には、該光導波路Ａへ光波を入射する入射部又は該光導波路Ａから光波を出射する出射部を有しており、第二の基板（１）に光導波路Ｂ（１０）が形成され、前記第二の基板には該光導波路Ｂを伝搬する光波を変調する光変調部を有しており、該光導波路Ａ（２０）の少なくとも一部には、光モードフィールド径を変換する変換部（２０）を有することを特徴とする光導波路素子である。
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公开(公告)号：WO2022018004A1
公开(公告)日：2022-01-27
申请号：PCT/EP2021/070081
申请日：2021-07-19
申请人： OMMATIDIA LIDAR S.L.
IPC分类号： G02B6/28 , G02B6/35 , G02B6/125 , H04J14/00 , G02B6/12 , G02B6/42 , G02B6/30 , G01S17/00 , G02F1/29
摘要： Multi-directional optical devices are disclosed. The optical device may employ a multiple input/multiple output optical coupling structure to determine propagation direction of received light (in receiver configuration), and/or control the propagation direction of transmitted light (in transmitter configuration). Propagation direction can be determined without the need for moving parts. In accordance with some embodiments, designs of solid-state photonic integrated circuits (PICs) are disclosed herein that utilize NxM star couplers to perform Fourier transformations to light traversing between the N ports and M ports such that light arriving at one or more of the N ports is distributed with a linear phase profile across the M ports. The slope of the linear phase profile is dependent on which of the N ports that light was received from. The light exits from waveguides coupled to the M ports at one or more propagation directions dependent on the linear phase profile.
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公开(公告)号：WO2021123505A1
公开(公告)日：2021-06-24
申请号：PCT/FI2020/050856
申请日：2020-12-18
发明人： AALTO, Timo
IPC分类号： G02B6/122 , G02B6/125 , G02B6/30 , G02B6/42 , G02B6/12 , G02B2006/12152 , G02B6/1228 , G02B6/305 , G02B6/422 , G02B6/423
摘要： An optical assembly for realizing horizontal and vertical spot-size conversion to couple light from a thin waveguide to a thick waveguide is disclosed. The assembly comprises at least one first thin waveguide with a first section having a first optical mode field and a horizontal spot-size expansion section providing spot-size conversion for a first horizontal dimension of said first optical mode field of a light beam propagating in said first waveguide, and at least one second thick waveguide with a second section having a second optical mode field and a horizontal spot-size reduction section providing spot-size conversion for a second horizontal dimension of said second optical mode field of a light beam propagating in said second waveguide. The expanded end of said first waveguide is aligned and rotated to interface with the reduced end of said second waveguide, so that the mode fields in said first and second waveguides are rotated 90 degrees with respect to each other, whereby the spot size of a light beam so coupled between the first and second waveguides is expanded or shrunk in both transverse dimensions, depending on the direction of the light beam.
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公开(公告)号：WO2021007595A1
公开(公告)日：2021-01-14
申请号：PCT/US2020/070252
申请日：2020-07-09
发明人： ZHANG, Mian , REIMER, Christian , LUKE, Kevin
摘要： An optical modulator that uses adiabatic tapers to change the width of the waveguides between multimode waveguides and single mode waveguides on a low-loss, e.g. thin-film lithium niobate, electro-optic platform. The architecture enables the utilization of the fundamental mode of multimode wide optical waveguides that have lower optical propagation loss without sacrificing the benefit of the signal integrity and ease of control of single mode operation.
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公开(公告)号：WO2021005726A1
公开(公告)日：2021-01-14
申请号：PCT/JP2019/027197
申请日：2019-07-09
申请人： 日本電信電話株式会社
IPC分类号： G02B6/125
摘要： 基板にかかる応力を緩和して、反りを抑制した平面光波回路を提供する。基板上にガラス膜が堆積された平面光波回路であって、入力導波路から出力導波路までの光軸方向を前記基板の長手方向としたとき、前記基板の短手方向に、複数の溝が直線状に形成されている。
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