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公开(公告)号：US11493703B2
公开(公告)日：2022-11-08
申请号：US17259633
申请日：2019-07-12
IPC分类号： H04B10/11 , H04B10/50 , H04J14/06 , G02B6/42 , G02F1/35 , H01S3/23 , H04B10/25 , H04B10/112 , H04B10/293
摘要： A laser device for optical communication comprises a first laser unit connected to a first optical fiber for supplying a transmission laser beam thereto. wherein the laser device is configured for providing a reference laser beam in addition to the transmission laser beam. For providing the reference laser beam the laser device further includes a second laser unit connected to a second optical fiber for supplying the reference laser beam to the second optical fiber. The first laser unit is configured for providing the transmission laser beam as a linear polarized beam that is polarized in a first polarization direction, and the second laser unit is configured for providing the reference laser beam as a linear polarized beam that is polarized in a second polarization direction. The first optical fiber and the second optical fiber are formed of polarization maintaining optical fibers, and the laser device further includes a polarization combiner connected to a third polarization maintaining optical fiber for conveying the transmission laser beam and the reference laser beam to an optical output of the laser device.
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公开(公告)号：US09507081B2
公开(公告)日：2016-11-29
申请号：US14750898
申请日：2015-06-25
CPC分类号： G02B6/02 , G01D5/268 , G01N21/774 , G01N2021/7723 , G02B6/02104 , G02B6/0229
摘要： The invention relates to a sensor system comprising a waveguide, which waveguide comprises a grating in at least a part of the waveguide, which waveguide further comprises a coating, the coating comprising a polymer, which polymer comprises a chain, in which chain are present an aromatic group and a chemical group selected from the group of sulfonyl groups, carbonyl groups, carbonate groups, fluorocarbon groups, siloxane groups, pyridine groups and amide groups.
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公开(公告)号：US10753774B2
公开(公告)日：2020-08-25
申请号：US15778767
申请日：2016-11-25
摘要： A fiber optic sensor device comprising an optical fiber with a multilayer coating on the optical fiber at least in a fiber section of the optical fiber. The multilayer coating comprises a chrome layer on the optical fiber, a metal layer such as a copper layer on the chrome layer and an indium or lead layer on the metal layer. The indium or lead layer having a thickness larger than thicknesses of the chrome and metal layers, preferably with a thickness about equal to the radius of the optical fiber.
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公开(公告)号：US09677960B2
公开(公告)日：2017-06-13
申请号：US14424698
申请日：2013-08-29
发明人： Lun Kai Cheng , Peter Martijn Toet , Rik Jansen
CPC分类号： G01L7/041 , E21B47/06 , G01D5/35316 , G01D5/35387 , G01L1/246 , G01L9/0027 , G01L11/025
摘要： A pressure sensing assembly (1), comprising: an elongate, axially extending tube (100), having a flexible tube wall (102) that encloses an inner pressure chamber (106); and at least one sensor unit (200), including: two tube wall fixation devices (210), connected to the tube wall (102) at respective axially spaced apart positions, and configured to fix respective diameters (D, d) of the tube wall at said positions; and a first strain sensing element (220), connected to the tube wall (102) at a first position axially in between said two tube wall devices (210), and configured to provide a first signal indicative of an axial elongation of the tube wall resulting from a change in axial curvature of the tube wall when a pressure differential between the inner pressure chamber (106) and an outside environment (108) of the tube is applied across the tube wall at said first position.
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公开(公告)号：US11493325B2
公开(公告)日：2022-11-08
申请号：US17270376
申请日：2019-08-26
IPC分类号： G01B9/02015 , G01B11/00 , G01B9/02001 , G01B9/02
摘要： Translations of an object in a plurality of different spatial directions are measured using a plurality of interferometers to detect interference with light that has been reflected from a diffusively reflective surface, preferably using diffuse reflection from the same planar surface to measure in each of the different spatial directions. At least the interferometers that measure translation in directions that are not perpendicular to the surface each comprises a single mode fiber and a collimator configured to transmit the outgoing light to the object successively through the single mode fiber and the collimator, and to collect reflection into the single mode fiber with the collimator both along a same beam direction. It has been found that, when reflection of a beam with a beam direction at an oblique angle to a diffusively reflective surface is used, the interference resulting from translation of the object is due substantially only to translation in the beam direction.
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公开(公告)号：US20150330814A1
公开(公告)日：2015-11-19
申请号：US14750898
申请日：2015-06-25
CPC分类号： G02B6/02 , G01D5/268 , G01N21/774 , G01N2021/7723 , G02B6/02104 , G02B6/0229
摘要： The invention relates to a sensor system comprising a waveguide, which waveguide comprises a grating in at least a part of the waveguide, which waveguide further comprises a coating, the coating comprising a polymer, which polymer comprises a chain, in which chain are present an aromatic group and a chemical group selected from the group of sulfonyl groups, carbonyl groups, carbonate groups, fluorocarbon groups, siloxane groups, pyridine groups and amide groups.
摘要翻译： 本发明涉及一种包括波导的传感器系统，该波导在波导的至少一部分中包括光栅，该波导还包括涂层，该涂层包含聚合物，该聚合物包含链，链中存在链 芳基和选自磺酰基，羰基，碳酸酯基，碳氟基，硅氧烷基，吡啶基和酰胺基的化学基团。
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公开(公告)号：US20150226622A1
公开(公告)日：2015-08-13
申请号：US14424698
申请日：2013-08-29
发明人： Lun Kai Cheng , Peter Martijn Toet , Rik Jansen
CPC分类号： G01L7/041 , E21B47/06 , G01D5/35316 , G01D5/35387 , G01L1/246 , G01L9/0027 , G01L11/025
摘要： A pressure sensing assembly (1), comprising: an elongate, axially extending tube (100), having a flexible tube wall (102) that encloses an inner pressure chamber (106); and at least one sensor unit (200), including: two tube wall fixation devices (210), connected to the tube wall (102) at respective axially spaced apart positions, and configured to fix respective diameters (D, d) of the tube wall at said positions; and a first strain sensing element (220), connected to the tube wall (102) at a first position axially in between said two tube wall devices (210), and configured to provide a first signal indicative of an axial elongation of the tube wall resulting from a change in axial curvature of the tube wall when a pressure differential between the inner pressure chamber (106) and an outside environment (108) of the tube is applied across the tube wall at said first position.
摘要翻译： 一种压力感测组件（1），包括：细长的轴向延伸的管（100），其具有包围内压室（106）的柔性管壁（102）; 和至少一个传感器单元（200），包括：两个管壁固定装置（210），其在相应的轴向间隔开的位置处连接到管壁（102），并且构造成固定管的相应直径（D，d） 所在位置的墙; 以及第一应变传感元件（220），其在轴向位于所述两个管壁装置（210）之间的第一位置处连接到所述管壁（102），并且被配置为提供指示所述管壁的轴向伸长的第一信号 这是由于当在所述第一位置处跨越管壁而将管内壁压力室（106）和外部环境（108）之间的压力差施加在管壁的轴向曲率上时产生。
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公开(公告)号：US11965759B2
公开(公告)日：2024-04-23
申请号：US17413350
申请日：2019-12-16
发明人： Gert-Jan Adriaan Van Groenestijn , Paul Louis Maria Joseph Van Neer , Fokko Pieter Wieringa , Arno Willem Frederik Volker , Lun Kai Cheng
摘要： Ultrasonic measurements of fluid properties are performed with the aid of an optical fiber or a package of optical fibers by exciting ultrasound waves at a first location along the optical fiber in the fluid by means of light from the optical fiber and detecting an effect of the ultrasound waves on light reflection or propagation in the optical fiber and/or a further optical fiber in the package at a second location along the optical fiber or at the end of the optical fiber.
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公开(公告)号：US09791259B2
公开(公告)日：2017-10-17
申请号：US14785367
申请日：2014-04-17
IPC分类号： G01B9/02
CPC分类号： G01B9/0209 , G01B9/02014 , G01B9/02057 , G01B9/02064 , G01B9/02065 , G01B9/02081 , G01B2290/45
摘要： Distance to a target is sensed using a common path interferometer, wherein a first fraction of light from a light source is collected after reflection by a partially reflective element together with reflection from a target of a second fraction of light from the light source that has been transmitted by the partially reflective element. The collected light is split in two parts, both containing a part of the first fraction and part of the reflection from the target. The parts are fed through a first and second optical branch path to an input side of a three-way optical coupler respectively. Light from at three terminals on a second side of the N way coupler is fed to respective light intensity detectors. Information representing an excess distance traveled by the first fraction from detection signals determined by the least three light intensity detectors.
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10.发明授权Transversal load insensitive optical waveguide, and optical sensor comprising a wave guide 有权横向负载不敏感光波导，以及包括波导的光学传感器公开(公告)号：US09494732B2
公开(公告)日：2016-11-15
申请号：US14374764
申请日：2013-01-25
发明人： Lun Kai Cheng , Peter Martijn Toet
CPC分类号： G02B6/036 , G01L1/246 , G02B6/021 , G02B6/02171 , G02B6/02357 , G02B6/02361 , G02B6/02366 , G02B6/02371 , G02B6/03694 , G02B6/34
摘要： A transversal load insensitive optical waveguide includes a primary section having a core. The waveguide may further include an outer cladding. The primary section includes a primary section surface and the outer cladding includes an exterior surface mechanically attached to the primary section surface by an interior cladding structure forming a mechanical connection. The cladding structure is such that for at least part of a distance between each two radial corresponding points on the exterior surface and the primary section surface respectively, the mechanical connection deviates from being radial, so that a radially-directed load on an exterior surface of the outer cladding is deflected by the cladding structure.
摘要翻译： 横向负载不敏感光波导包括具有芯的初级部分。 波导还可以包括外包层。 主要部分包括主要部分表面，并且外部包层包括通过形成机械连接的内部包层结构机械地附接到主要部分表面的外部表面。 包层结构使得对于外表面上的每个两个径向对应点和主要部分表面之间的至少一部分距离，机械连接偏离径向，使得在外表面上的径向载荷 外包层被包层结构偏转。
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