-
61.发明授权公开(公告)号：US10168246B2
公开(公告)日：2019-01-01
申请号：US15298385
申请日：2016-10-20
Applicant: Corning Incorporated
Inventor： Scott Robertson Bickham , Dana Craig Bookbinder , Xin Chen , Steven Craig Garner, Jr. , Ming-Jun Li , Dale Robert Powers
Abstract: Methods of selecting, from a set of like optical fibers, a subset of optical fibers that can meet both short-wavelength and target-wavelength bandwidth requirements are disclosed. The method includes obtaining short-wavelength bandwidth data from DMD measurements, and determining a peak wavelength for each optical fiber. A target-wavelength bandwidth is then calculated using the determined peak wavelengths. The calculated target bandwidth is then compared to the short-wavelength and target-wavelength bandwidth requirements to identify which of the optical fibers satisfy these requirements.
-
公开(公告)号：US09885613B1
公开(公告)日：2018-02-06
申请号：US14216987
申请日：2014-03-17
Applicant: National Security Technologies, LLC
Inventor： Daniel K. Frayer
IPC: G01J7/00
CPC classification number: G01J7/00 , G01P3/36 , G01S7/4812 , G01S7/4813 , G01S7/4818 , G01S7/4917 , G01S17/58 , G01S17/89 , G02B6/322 , G02B6/34
Abstract: A probe including reflector is disclosed to measure the velocity distribution of a moving surface along many lines of sight. Laser light, directed to the surface by the probe and then reflected back from the surface, is Doppler shifted by the moving surface, collected into probe, and then directed to detection equipment through optic fibers. The received light is mixed with reference laser light and using photonic Doppler velocimetry, a continuous time record of the surface movement is obtained. An array of single-mode optical fibers provides an optic signal to one or more lens groups and a reflector, such as a parabolic reflector having a mirrored interior surface.
-
63.发明授权
公开(公告)号：US5995228A
公开(公告)日：1999-11-30
申请号：US250089
申请日：1999-02-16
Applicant: Akihito Otani , Toshinobu Otsubo , Hidehiko Takara , Satoki Kawanishi , Yoshiaki Yamabayashi
Inventor： Akihito Otani , Toshinobu Otsubo , Hidehiko Takara , Satoki Kawanishi , Yoshiaki Yamabayashi
CPC classification number: G01M11/336 , G01J4/00 , G01J7/00 , G01M11/332 , G01M11/335 , G01J2009/0261
Abstract: A first tunable wavelength pulse light source is driven by a reference signal to emit a first optical pulse. An optical demultiplexer demultiplexes a first optical pulse emitted from the first pulse light source into a reference optical pulse and an incident optical pulse to be sent into an object to be measured. An optical multiplexer multiplexes the reference optical pulse and an outgoing optical pulse passing through the object to output multiplexed light. A second pulse light source generates a second optical pulse which is synchronous with the first optical pulse and delays a predetermined time for each period of the first optical pulse. A sampling unit receives the multiplexed light and the second optical pulse to obtain an optical pulse train signal proportional to the intensity of the multiplexed light obtained in synchronism with the second optical pulse. From the optical pulse train signal from the sampling unit, a signal processor obtains an envelope formed by peaks of individual optical pulses forming the optical pulse train. The wavelength dispersion of the object is obtained by measuring the delay time of the outgoing optical pulse passing through the object on the basis of intervals between the peaks of the envelope.
Abstract translation: 第一可调波长脉冲光源由参考信号驱动以发射第一光脉冲。 光解复用器将从第一脉冲光源发射的第一光脉冲解复用为参考光脉冲和入射光脉冲，以发送到待测物体中。 光复用器复用参考光脉冲和通过物体的输出光脉冲以输出多路复用光。 第二脉冲光源产生与第一光脉冲同步的第二光脉冲，并延迟第一光脉冲的每个周期的预定时间。 采样单元接收复用光和第二光脉冲，以获得与与第二光脉冲同步获得的多路复用光的强度成比例的光脉冲串信号。 从采样单元的光脉冲信号中，信号处理器获得由形成光脉冲串的各个光脉冲的峰值形成的包络。 通过基于信封的峰值之间的间隔测量通过物体的输出光脉冲的延迟时间来获得物体的波长色散。
-
公开(公告)号：WO9636858A2
公开(公告)日：1996-11-21
申请号：PCT/US9606712
申请日：1996-05-09
Applicant: TRACOR
Inventor： NICHOLSON JAMES E
CPC classification number: G01J9/0246 , G01J2009/0226
Abstract: An incident optical signal is captured by an array of apertures and directed to pairs of fibers, each pair having a delay fiber with a unique length and a no-delay fiber. Each pair of fibers further has a unique transmission characteristic. Time interpolation is then performed using the transmission characteristic curve for each delay fiber and the duration from the time the optical signal arrives over the no-delay fibers and the time the signal arrives over the delay fibers to determine the wavelength. In a second embodiment, each pair of delay and no-delay fibers is replaced by a fiber splitter which directs light into a no-delay fiber and a delay fiber that have been split from the input of the splitter. In a third embodiment, two fiber splitters are used in place of the pairs of fibers. Each splitter has a number of branches for receiving light and an output end for guiding light onto the photodetectors. The propagation time of the delay optical signal, as compared against the no-delay signal, and other factors such as the length of the individual fiber and the transmission characteristics, are used to determine the wavelength.
Abstract translation: 入射光信号由一组孔径捕获并被引导到一对光纤，每对光纤具有一个具有唯一长度的延迟光纤和一个无延迟光纤。 每对纤维还具有独特的传输特性。 然后使用每个延迟光纤的传输特性曲线和从光信号到达无延迟光纤时的持续时间和信号到达延迟光纤的时间来确定波长来执行时间插值。 在第二实施例中，每对延迟和无延迟光纤由光纤分离器代替，光纤分离器将光引导到已经从分离器的输入分离的无延迟光纤和延迟光纤。 在第三实施例中，使用两根光纤分离器代替成对的光纤。 每个分离器具有用于接收光的多个分支和用于将光引导到光电检测器上的输出端。 使用与无延迟信号相比的延迟光信号的传播时间以及诸如单个光纤的长度和传输特性的其它因素来确定波长。
-
公开(公告)号：WO2011059387A1
公开(公告)日：2011-05-19
申请号：PCT/SE2010/051242
申请日：2010-11-11
Inventor： HEDEKVIST, Per Olof
CPC classification number: H04L7/0075 , H04B10/6161 , H04B10/63
Abstract: A method of controlling a timing state of a local oscillator (17) being synchronized by a timing signal (S T1 ) provided through one-way transmission from a remote master oscillator (6) through a dielectric waveguide (4). The method comprises the steps of: receiving (101) a first timing signal (S T 1 ) modulated on a first electromagnetic carrier having a first carrier wavelength (λ 1 ) and transmitted through the dielectric waveguide (4); receiving(101) a second timing signal (S T2 ) modulated on a second electromagnetic carrier having a second carrier wavelength (λ 2 ) different from the first carrier wavelength (λ 1 ) and transmitted through the dielectric waveguide (4) together with the first timing signal (S T1 ); providing(102) a signal (S diff ) indicative of a difference between a transmission time (T 1 ) of the first timing signal (S T1 ) and a transmission time (T 2 ) of the second timing signal (S T2 ) through the dielectric waveguide; and controlling (103) the timing state of the local oscillator (17) based on the first timing signal (S T1 )and the signal (S diff ) indicative of the difference between the transmission time (T 1 ) of the first timing signal (S T1 ) and the transmission time (T 2 ) of the second timing signal (S T2 ).
Abstract translation: 一种通过由远程主振荡器（6）通过介质波导（4）进行单向传输提供的定时信号（ST1）来同步控制本地振荡器（17）的定时状态的方法。 该方法包括以下步骤：接收（101）在具有第一载波波长（λ1）的第一电磁载波上调制并传输通过介质波导（4）的第一定时信号（ST1）; 接收（101）第二定时信号（ST2），该第二定时信号（ST2）与第一载波波长（λ1）不同的第二载波波长（λ2）调制在第二电磁载波上，并与第一定时 信号（ST1）; 通过介质波导提供（102）指示第一定时信号（ST1）的传输时间（T1）与第二定时信号（ST2）的传输时间（T2）之间的差的信号（Sdiff） 以及基于所述第一定时信号（ST1）和指示所述第一定时信号（ST1）的传输时间（T1）与所述第一定时信号（ST1）的传输时间（T1）之间的差异的信号（Sdiff）来控制（103）所述本地振荡器 第二定时信号（ST2）的传输时间（T2）。
-
Patent Agency Ranking
公开(公告)号：CN211234739U
公开(公告)日：2020-08-11
申请号：CN201922391669.9
申请日：2019-12-27
Applicant: 倪家琦
Inventor： 倪家琦
Abstract: 本实用新型公开了一种光速测量仪棱镜间距调节导轨，包括底板，其特征是：所述底板上侧一端中部固定连接U形亚克力板两竖板下端，所述U形亚克力板两竖板下部分别设有对称的滑槽，所述U形亚克力板上侧一端固定连接标尺下侧，所述底板上侧一端分别固定连接安装柱下端，两个所述安装柱分别位于所述U形亚克力板内两端，两个所述安装柱上端分别固定连接滑杆下侧一端，所述滑杆设于滑块内，所述滑块上侧中部固定连接直角折射镜下端，本实用新型涉及光速测量导轨领域，具体地讲，涉及一种光速测量仪棱镜间距调节导轨。本装置可以实现根据滑块调节直角折射镜与激光器之间的距离，可观察测量不同距离的光线发生的不同状态。
-
公开(公告)号：CN206740251U
公开(公告)日：2017-12-12
申请号：CN201720338483.5
申请日：2017-04-01
Applicant: 青海民族大学
Inventor： 毛多鹭
IPC: G01J7/00
Abstract: 本实用新型公开一种拍频法光速测定仪，包括依次设置的激光器、频移器、光阑、斩光器及光敏接收器，在所述光阑和斩光器之间设置Y形光导纤维，所述Y形光导纤维岔开部分的两股长短不同，所述斩光器为一薄板，薄板的一半透明另一半为反光镜，并且薄板绕其中心在薄板所在平面内转动，所述斩光器倾斜放置。本实用新型拍频法光速测定仪，其测量精度高、调节方便、体积小。
-
-
公开(公告)号：JP2016191717A
公开(公告)日：2016-11-10
申请号：JP2016141857
申请日：2016-06-30
Applicant: 鈴木 一高
Inventor： 鈴木 一高
IPC: G01J7/00
Abstract: 【課題】従来の光速の測定は、地球上の観測者により短期的に実験として行われたものに限られている。従来の方法では宇宙空間での光速の継続的な測定は困難である。 【解決手段】複数の静止衛星が継続的に多数回、それぞれお互いに電磁波を送受信し、その到達時間とお互いの距離から光速を算出する、という方法を提供し、宇宙空間での継続的な光速測定を可能とする。 【選択図】図1
Abstract translation: 要解决的问题为了解决由于通过在短时间内由地球上的观察者作为实验限制了光速的常规测量，由于在空间中的光速的连续测量难以在 常规方法。解决方案：提供一种多个静止卫星连续相互发送和接收电磁波多次并从其到达时间和相互距离计算光速的方法。 因此，可以对空间中的光速进行连续测量。图1：
-
-
-
-
-
-
-
-
-
Search Results
216
records
(took 0.018 seconds)
