-
公开(公告)号:US20240361516A1
公开(公告)日:2024-10-31
申请号:US18770283
申请日:2024-07-11
发明人: Lin Zhang , Yuping Wu , Bofang Zheng , Yang Wang , Zhiqun Yang
CPC分类号: G02B6/02042 , G02B6/02038 , H04B10/616 , G02B2006/12061
摘要: A light receiving module is provided, including a beam contraction module, a multi-core multi-mode waveguide, and a detector. The beam contraction module is configured to receive a first optical signal, and contract a mode spot of the first optical signal, to obtain a second optical signal. The multi-core multi-mode waveguide includes a cladding layer and N waveguides. The multi-core multi-mode waveguide is configured to: receive the second optical signal, and concentrate energy of the second optical signal in a plurality of waveguides of the N waveguides, to obtain a plurality of third optical signals. A plurality of sub-detectors are in one-to-one correspondence with the plurality of third optical signals. The plurality of sub-detectors are configured to receive the plurality of third optical signals, to obtain a plurality of electrical signals based on the plurality of third optical signals.
-
公开(公告)号:US20240353221A1
公开(公告)日:2024-10-24
申请号:US18762326
申请日:2024-07-02
CPC分类号: G01B11/24 , G01D5/35316 , G02B6/02042 , G02B6/02128 , G09B23/32
摘要: A shape sensing system for an anthropomorphic test device is disclosed that includes a plurality of body parts and at least one optical fiber that has a plurality of cores in a spaced and parallel relationship with one another that extend between ends of the optical fiber for sensing positions of the body parts. Each of the cores have a plurality of grating sensors disposed along a length thereof capable of determining a position and orientation of the body parts.
-
公开(公告)号:US12105321B2
公开(公告)日:2024-10-01
申请号:US17698796
申请日:2022-03-18
发明人: Anand Pandey , Ranjith Balakrishnan
CPC分类号: G02B6/02042 , G02B6/02338 , G02B6/4482
摘要: The present disclosure provides a multi-core fiber (MCF) and manufacturing method thereof and an MCF marker (or marker). The MCF (100) comprises a plurality of cores (102) and a marker (108). Each core is associated with a core diameter (104) and a core-placement-radius (106) and the marker (108) is associated with a marker diameter (110) and a marker-placement-radius (112). The marker has a marker core (116) and a marker clad (118) with a D/d ratio between 5 to 20. During manufacturing, the MCF is drawn from a preform assembly (200) having a top hollow handle (202) with a handle thickness (114) attached on a top end of a glass preform (204) that has a plurality of core holes (206) and a marker hole (210), wherein the marker hole (210) is at least partially covered by the top hollow handle of the handle thickness (114).
-
公开(公告)号:US20240288627A1
公开(公告)日:2024-08-29
申请号:US18652219
申请日:2024-05-01
发明人: Tetsuya HAYASHI
CPC分类号: G02B6/02042 , G02B6/0288
摘要: An MCF or the like according to the present disclosure ensures sufficient manufacturing tolerance, is excellent in mass productivity, and is also capable of suppressing degradation of splice loss. The MCF includes four cores that extend along a central axis, and a common cladding. On a cross-section, the common cladding has a circular outer periphery, the four cores are arranged at positions to be line symmetric with respect to a straight line that intersects with a central axis and that intersects with none of the four cores, and a core arrangement defined by the four cores has rotational symmetry once with central axis being a center of rotation.
-
公开(公告)号:US12061356B2
公开(公告)日:2024-08-13
申请号:US18199483
申请日:2023-05-19
IPC分类号: F21V8/00 , G02B3/00 , G02B6/02 , G02B6/04 , G02B6/08 , G02B6/293 , G02B25/00 , G02B27/00 , G02B27/01 , G02B27/09 , G02B27/10 , G02B30/00 , G02B30/33 , G02B30/56 , G03H1/22 , G10K11/26 , G21K1/00 , H04N5/89 , H04N13/388 , H04N23/957 , G02B3/08 , G02B5/32 , G03H1/00 , G03H1/02 , G06F3/01 , H04N13/344
CPC分类号: G02B6/0096 , G02B6/02042 , G02B6/023 , G02B6/04 , G02B6/08 , G02B6/29325 , G02B27/0172 , G02B27/0955 , G02B27/0994 , G02B27/1066 , G02B30/00 , G02B30/33 , H04N13/388 , G02B3/0056 , G02B3/08 , G02B5/32 , G02B6/0229 , G02B6/02295 , G02B25/00 , G02B25/002 , G02B27/0093 , G02B27/0103 , G02B2027/0105 , G02B2027/0134 , G02B2027/0174 , G02B27/1073 , G02B30/56 , G03H1/0005 , G03H2001/0088 , G03H1/0248 , G03H1/2202 , G03H1/2294 , G03H2223/19 , G06F3/01 , G06F3/013 , G10K11/26 , G21K1/00 , H04N5/89 , H04N13/344 , H04N23/957 , Y02E10/52
摘要: Disclosed embodiments include an energy directing device having one or more energy relay elements configured to direct energy from one or more energy locations through the device. In an embodiment, surfaces of the one or more energy relay elements may form a singular seamless energy surface where a separation between adjacent energy relay element surfaces is less than a minimum perceptible contour. In disclosed embodiments, energy is produced at energy locations having an active energy surface and a mechanical envelope. In an embodiment, the energy directing device is configured to relay energy from the energy locations through the singular seamless energy surface while minimizing separation between energy locations due to their mechanical envelope. In embodiments, the energy relay elements may comprise energy relays utilizing transverse Anderson localization phenomena.
-
公开(公告)号:US12050098B2
公开(公告)日:2024-07-30
申请号:US17432241
申请日:2020-02-20
CPC分类号: G01B11/24 , G01D5/35316 , G02B6/02042 , G02B6/02128 , G09B23/32
摘要: A shape sensing system for an anthropomorphic test device is disclosed that includes a plurality of body parts and at least one optical fiber that has a plurality of cores in a spaced and parallel relationship with one another that extend between ends of the optical fiber for sensing positions of the body parts. Each of the cores have a plurality of grating sensors disposed along a length thereof capable of determining a position and orientation of the body parts.
-
公开(公告)号:US20240235684A1
公开(公告)日:2024-07-11
申请号:US18398461
申请日:2023-12-28
申请人: NEC Corporation
发明人: Yusuke SASAKI
IPC分类号: H04B10/291 , G02B6/02 , H04B10/25
CPC分类号: H04B10/2912 , G02B6/02042 , H04B10/25
摘要: In an optical amplification device using a multicore optical fiber, it is difficult to efficiently amplify signal light. In order to solve this problem, an optical amplification device according to the present disclosure includes an optical fiber amplification unit including a plurality of amplification cores, a first connection unit being connected to one end of the optical fiber amplification unit, and a second connection unit being connected to another end of the optical fiber amplification unit, wherein the first connection unit is configured in such a way as to connect a transmission fiber including a plurality of transmission cores to the optical fiber amplification unit, and the number of the plurality of amplification cores is larger than the number of the plurality of transmission cores.
-
公开(公告)号:US12032200B2
公开(公告)日:2024-07-09
申请号:US17698832
申请日:2022-03-18
发明人: Apeksha Malviya , Srinivas Reddy Munige , Janarthanan Balakrishnan , Shubham , Ranjith Balakrishnan , Anand Pandey
IPC分类号: G02B6/02
CPC分类号: G02B6/02009 , G02B6/02042
摘要: Disclosed is a multi-core optical fiber having a plurality of cores extending parallelly along a central axis of the multi-core optical fiber. Each core of the plurality of cores is up-doped with an up-dopant. The multi-core optical fiber further has a plurality of buffer layers such that each buffer layer of the plurality of buffer layers envelop a corresponding core of the plurality of cores. Each buffer layer of the plurality of buffer layers has a predefined buffer layer thickness. The multi-core optical fiber further has a plurality of trench layers such that each trench layer of the plurality of trench layers envelops a corresponding buffer layer of the plurality of buffer layers. Each trench layer of the plurality of trench layers is down-doped with a down-dopant. The multi-core optical fiber has an inter-core crosstalk of less than −30 decibel/kilometres (dB/km) at a wavelength of 1550 nanometres (nm).
-
公开(公告)号:US20240192437A1
公开(公告)日:2024-06-13
申请号:US18582996
申请日:2024-02-21
发明人: Yuki SATO
CPC分类号: G02B6/02042 , G02B6/02004 , G02B6/0285
摘要: An optical fiber includes a core portion, a side core layer, and a cladding portion, where Δ1>ΔClad>Δ2 and 0>Δ2 are satisfied, Δ1 is 0.35% or more and 0.45% or less, Δ2 is −0.2% or more and less than 0%, 2a is 8 μm or more and 10 μm or less, 2b is 35 μm or more and 45 μm or less, and a refractive index profile of the side core layer includes a bottom portion where a refractive index is lower than that of other regions of the side core layer, and a distance of a position of lowest refractive index in the bottom portion from a center of the core portion is a+(b−a)/1.55 μm or less.
-
10.
公开(公告)号:US12001050B2
公开(公告)日:2024-06-04
申请号:US17448077
申请日:2021-09-20
IPC分类号: G02B6/02
CPC分类号: G02B6/02042
摘要: A multicore fiber includes: n pieces of first core regions in a circular shape with a radius r1 that are arranged about points P11 to P1n, and that has a first core portion and a first cladding portion; a second core region in a circular shape with a radius R1 that is arranged about the point a1, and that has a second core portion and a second cladding portion; and a cladding region that is formed on an outer circumferences of the first core region and the second core region. Further, abutting surfaces that are flat surfaces abutting on each other are formed in portions on the outer circumferences of the first core region and the second core region.
-
-
-
-
-
-
-
-
-