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51. 发明授权

US10969571B2 Few-mode fiber endoscope 有权
公开(公告)号：US10969571B2
公开(公告)日：2021-04-06
申请号：US15168189
申请日：2016-05-30
申请人： Eric Swanson
发明人： Eric Swanson
IPC分类号： G02B23/24 , G02B23/26 , G01B9/02 , A61B5/00 , G02B6/028 , A61B1/00 , G02B6/28 , A61B1/07 , G01N21/47 , G01N21/65 , G01N21/64
摘要： Disclosed herein are configurations for few-mode fiber optical endoscope systems employing distal optics and few-mode, double-clad or other optical fiber wherein the systems directing an optical beam to a sample via the optical fiber; collecting light backscattered from the sample; direct the backscattered light to a detector via the optical fiber; and detect the backscattered light; wherein the directed optical beam is single mode and the collected light is one or more higher order modes.

52. 发明授权

US10951321B2 Phase modulation device, receiver, transmitter and a phase modulating method 有权
公开(公告)号：US10951321B2
公开(公告)日：2021-03-16
申请号：US16092158
申请日：2017-05-02
申请人： Xieon Networks S.a.r.l.
发明人： Ulrich Gaubatz
IPC分类号： H04B10/548 , H04B10/50 , G02F1/01 , G02B6/27 , G02B6/28 , H04B10/60 , H04B10/40
摘要： A phase modulation device is provided that comprises a retardation device and a control device. The retardation device is characterized by first and second polarization eigenstates SOPf and SOPs. Light polarized according to the second polarization eigenstate SOPs acquires, upon passing through said retardation device, a delay with regard to light polarized according to the first polarization eigenstate SOPf, which delay corresponds to λ/2±30%, preferably λ/2±20% and most preferably λ/2±10%. The retardation device is arranged to receive input light having a polarization state SOPf; that defines an angle with respect to one of the first and second polarization eigenstates SOPf, SOPs within a predetermined angle range and to emit output light. The control device is configured to control at least one of a change of the angle between the polarization state SOPi; of
the input light and the respective polarization eigenstate SOPf, SOPs by less than 0.1*π, preferably less than 0.05*π and most preferably less than 0.02*π; and a change of the amount of said delay upon passing through said retardation device by less than 0.3*λ, preferably less than 0.2*λ and most preferably less than 0.1*λ, such that a phase shift of π±30%, preferably π±20% and most preferably π±10% on the output light is obtained.

53. 发明授权

US10914891B2 Multichannel optical coupler 有权
公开(公告)号：US10914891B2
公开(公告)日：2021-02-09
申请号：US16141314
申请日：2018-09-25
申请人： Chiral Photonics, Inc.
发明人： Victor Il'ich Kopp
IPC分类号： G02B6/28 , G02B6/02 , G02B6/024 , G02B6/028 , G02B6/30
摘要： A multichannel optical coupler can include an output optical coupler array and a plurality of optical fibers. At least two of the plurality of optical fibers can be connected together at an end opposite the output optical coupler array.

54. 发明授权

US10908359B2 Adjustable wide-spectrum wavelength-insensitive directional coupler 有权
公开(公告)号：US10908359B2
公开(公告)日：2021-02-02
申请号：US16629920
申请日：2018-08-13
申请人： Henan Shijia Photons Technology Co., Ltd.
发明人： Liangliang Wang , Jiashun Zhang , Junming An , Xiaojie Yin , Jianguang Li , Hongjie Wang , Yuanda Wu , Yue Wang , Xiongwei Hu
IPC分类号： G02B6/28 , G02B6/38 , G02F1/01 , C01B33/12
摘要： An adjustable wide-spectrum wavelength-insensitive directional coupler, comprising a substrate (100). A first-stage directional coupling structure (1), a phase-shifting structure (2), and a second-stage directional coupling structure (3) are sequentially connected and disposed on the substrate (100). The phase-shifting structure (2) comprises a phase-shifting curved waveguide, a phase-shifting straight waveguide (22), and a third modulation component (26), wherein the third modulation component (26) is disposed on the phase-shifting curved waveguide. One end of the phase-shifting curved waveguide is connected to an output end of a directional coupled waveguide I (16) of the first-stage directional coupling structure (1), and the other end of the phase-shifting curved waveguide is connected to an input end of a directional coupled waveguide III (30) of the second-stage directional coupling structure (3). One end of the phase-shifting straight waveguide (22) is connected to an output end of a directional coupled waveguide II (17) of the first-stage directional coupling structure (1), and the other end of the phase-shifting straight waveguide (22) is connected to an input end of a directional coupled waveguide IV (31) of the second-stage directional coupling structure (3). The adjustable wide-spectrum wavelength-insensitive directional coupler achieves wide-spectrum wavelength-insensitivity, a wide spectrum of splitting-ratio adjustment and low loss, and is of a compact size for easy integration with other devices.

55. 发明申请

US20210011217A1 LOW-LOSS WAVEGUIDING STRUCTURES, IN PARTICULAR MODULATORS 有权
公开(公告)号：US20210011217A1
公开(公告)日：2021-01-14
申请号：US16924767
申请日：2020-07-09
申请人： HyperLight Corporation
发明人： Mian Zhang , Christian Reimer , Kevin Luke
IPC分类号： G02B6/122 , G02B6/28 , G02F1/01
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.

56. 发明授权

US10890717B2 Optical delay method and system 有权
公开(公告)号：US10890717B2
公开(公告)日：2021-01-12
申请号：US16614260
申请日：2018-05-15
申请人： POLITECNICO DI MILANO
发明人： Andrea Melloni , Daniele Melati
IPC分类号： G02B6/28 , H04B10/508
摘要： An optical delay method, and related system, includes propagating an optical signal along an optical delay device (10) with a first stage (11) having a variable input coupler (20) and a delay element. An intermediate stage (12) has a variable intermediate coupler (30) and a delay element. An output stage (13) includes a variable output coupler (40). The method sets a coupling ratio of the input (20) and output couplers (40) equal to a value K1 selected among a plurality of at least three values. A coupling ratio of the intermediate coupler (30) is set equal to a value K2, wherein K1=sin2(θ) & K2=sin2(A*θ) with θ greater than or equal to zero and less than or equal to π/2 and A greater than or equal to 1.5 and less than or equal to 2.5.

57. 发明授权

US10852494B2 Avionics pluggable active optical connector 有权
公开(公告)号：US10852494B2
公开(公告)日：2020-12-01
申请号：US16216834
申请日：2018-12-11
申请人： The Boeing Company
发明人： Tuong K. Truong , Eric Y. Chan , Dennis G. Koshinz , Kim Quan Anh Nguyen , Henry B. Pang
IPC分类号： G02B6/42 , G02B6/28 , G02B6/38 , G02B6/43
摘要： An apparatus configured to function as a pluggable active optical connector that is modular with one or more channels and that converts electrical signals to optical signals and vice versa. On one side, the apparatus has a pluggable electrical interface to a line replaceable unit (LRU); on the other side the apparatus has a pluggable optical interface side to an aircraft fiber optic wiring bundle. The apparatus is pluggable to different types of LRUs including rack-mounted and bolted-down LRUs. The apparatus includes electronic and photonic components sufficient to enable electrical/optical conversion totally within a standard-sized aircraft connector. The apparatus is adaptable to various data communication protocols and has the flexibility to be used in either a single-fiber or a dual-fiber bidirectional data link.

58. 发明授权

US10826264B2 Supercontinuum source 有权
公开(公告)号：US10826264B2
公开(公告)日：2020-11-03
申请号：US15431730
申请日：2017-02-13
申请人： NKT Photonics A/S
发明人： John Redvers Clowes , Anatoly Borisovich Grudinin , Adam Devine
IPC分类号： G02B6/02 , G02B6/26 , H01S3/00 , H01S3/23 , H01S3/067 , G02B27/10 , G02F1/365 , G02B6/28 , G02F1/35 , H01S3/16 , G02B6/028
摘要： A supercontinuum optical pulse source provides a combined supercontinuum, and can comprise one or more seed pulse sources; first and second optical amplifiers arranged along first and second respective optical paths, wherein the first and second optical amplifiers are configured to amplify one or more optical signals generated by the one or more seed pulse sources; a first microstructured light-guiding member arranged along the first optical path and configured to generate supercontinuum light responsive to an optical signal propagating along the first optical path; a second microstructured light-guiding member arranged along the second optical path and configured to generate supercontinuum light responsive to an optical signal propagating along the second optical path; a supercontinuum-combining member to combine supercontinuum generated in at least the first and second microstructured light-guiding members to form a combined supercontinuum; wherein the supercontinuum-combining member comprises an output fibre, wherein the output fibre comprises a silica-based multimode optical fibre supporting a plurality of spatial modes at one or more wavelengths of the combined supercontinuum; wherein the supercontinuum-combining member has one or more input fibres which support no more than four spatial modes at any wavelength within the combined supercontinuum; and wherein the output fibre of the supercontinuum-combining member supports no more than four spatial modes at any wavelength within the combined supercontinuum.

59. 发明授权

US10809460B2 Depolarizers 有权
公开(公告)号：US10809460B2
公开(公告)日：2020-10-20
申请号：US16123172
申请日：2018-09-06
申请人： EXALOS AG
发明人： Marcus Dülk , Philipp Vorreau
IPC分类号： G02B27/28 , G02B6/27 , G02F1/01 , F21V8/00 , G02B6/122 , G02B27/10 , G02B6/126 , G02B6/28 , G02B6/26 , G02B6/42
摘要： A depolarizer for a broadband optical source to split the source beam by power, not by polarization state, and route the components into respective light paths. A polarization rotator arranged in one of the light paths rotates the polarization state of that beam component to make it orthogonal to that of the other. The components are then recombined by a combiner and output. A variable optical attenuator is arranged in one of the light paths, which during operation is adjusted by a controller to maintain power equalization between the light paths and hence depolarization performance. The controller receives power measurements from the light paths and from after the combiner via respective sensors. With this feedforward design reminiscent of a Mach-Zehnder interferometer the light from a light source which generates highly polarized light can be depolarized in theory with zero insertion loss and in practice with losses of about 1 dB.

60. 发明申请

US20200326479A1 Augmented Multimodal Spatial Optical-Fibre Modes 审中-公开
公开(公告)号：US20200326479A1
公开(公告)日：2020-10-15
申请号：US16956139
申请日：2018-12-05
申请人： ORANGE
发明人： Philippe CHANCLOU
IPC分类号： G02B6/28
摘要： A device for inserting a plurality of optical beams into a single-mode optical fibre, a guiding structure of which is composed of a core with a first refractive index, a cladding with a second refractive index, and a coating with a third refractive index. The device includes an optical mixer configured to insert, into the single-mode optical fibre, the plurality of optical beams, at least one of which has a distribution of its radial and angular electromagnetic amplitude with a maximum amplitude peak in the cladding.

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