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公开(公告)号：US20170222391A1
公开(公告)日：2017-08-03
申请号：US15486323
申请日：2017-04-13
Applicant: Gigaphoton Inc.
Inventor： Masato MORIYA , Takeshi OHTA , Keisuke ISHIDA , Takashi KUSAMA
CPC classification number: H01S3/13 , G01J1/0425 , G01J1/0474 , G01J3/28 , G01J9/0246 , G01J2009/0257 , H01S3/08004 , H01S3/08009 , H01S3/08036 , H01S3/0811 , H01S3/0823 , H01S3/1305 , H01S3/134 , H01S3/137 , H01S3/2251 , H01S3/2256
Abstract: A narrow band laser apparatus may include: a laser resonator; a pair of discharge electrodes; a power supply; a first wavelength measurement device configured to output a first measurement result; a second wavelength measurement device configured to output a second measurement result; and a control unit. The control unit calibrates the first measurement result, based on a difference between the second measurement result derived when the control unit controls the power supply to apply a pulsed voltage to the pair of discharge electrodes with a first repetition frequency and the second measurement result derived when the control unit controls the power supply to apply the pulsed voltage to the pair of discharge electrodes with a second repetition frequency, the second repetition frequency being higher than the first repetition frequency.
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公开(公告)号：US20170167916A1
公开(公告)日：2017-06-15
申请号：US15373782
申请日：2016-12-09
Applicant: ARAGON PHOTONICS LABS S.L.U. , FIBERCOM, S.L.
IPC: G01J3/02
CPC classification number: G01J3/027 , G01J3/0245 , G01J3/0264 , G01J3/0275 , G01J3/0297 , G01J3/2803 , G01J3/32 , G01J3/4412 , G01J9/0246 , G01J9/04
Abstract: A system and method of optical spectrum analysis that circumvents the trade-off between resolution and sensitivity by combining two spectral measurements: a first spectrum (102) from first spectral measurement means (240), having high resolution and low sensitivity; and a second spectrum (103) from second spectral measurement means (220), having lower resolution but higher resolution. The input of the of the first spectral measurement means (240) is amplified by an optical amplifier (230), being the effects induced by said amplifier (230) on the first spectrum (102) corrected at processing means (270) by comparison with the second spectrum (103).
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公开(公告)号：US20160258817A1
公开(公告)日：2016-09-08
申请号：US15032563
申请日：2014-10-29
Inventor： Kishan DHOLAKIA , Michael MAZILU , Klaus METZGER
CPC classification number: G01J9/0246 , G01J1/4257 , G01J3/0205 , G01J4/00 , G01J2001/0481 , G01J2009/0257
Abstract: An optical system comprising a randomizer that has a plurality of randomly positioned scatterers for scattering and thereby randomizing light to generate a speckle pattern and a detector for detecting the speckle pattern to determine at least one property of the light and/or change in at least one property of the light.
Abstract translation: 一种光学系统，包括随机化器，其具有多个随机设置的用于散射的散射体，从而使光随机化以产生散斑图案;以及检测器，用于检测斑点图案，以确定至少一个光的至少一个性质和/或变化 光的属性。
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公开(公告)号：US20160084715A1
公开(公告)日：2016-03-24
申请号：US14786008
申请日：2014-04-18
Applicant: CANON KABUSHIKI KAISHA
Inventor： Yuichiro Hori
IPC: G01J9/02
CPC classification number: G01J9/0246 , G01B9/02004 , G01B9/02069 , G01B9/02091 , G01J2009/0253 , G01N21/4795 , H01S5/0014 , H01S5/18366
Abstract: A method of calibrating an optical frequency of light emitted from a wavelength-swept light source thereby allowing it to compensate for an error of a wavelength includes performing a first process of measuring an optical frequency range of the emitted light while changing a control parameter associated with an optical frequency sweeping mechanism and determining a correspondence between the control parameter and the optical frequency range, performing a second process of measuring a maximum of a gain of an active medium included in the wavelength-swept light source and determining a correspondence between the maximum of the gain and the control parameter, performing a third process of determining a relationship between the optical frequency range of the emitted light and the control parameter corresponding to the maximum gain of the active medium, and performing a fourth process of adjusting the control parameter based on the determined relationship.
Abstract translation: 校准从波长扫描光源发射的光的光频率从而允许其补偿波长误差的方法包括执行测量发射光的光频率范围的第一过程，同时改变与 光频扫描机构，确定控制参数与光频范围之间的对应关系，执行测量包括在波长扫描光源中的有源介质的增益的最大值的第二过程，并确定最大值 增益和控制参数，执行确定发射光的光频率范围与对应于活动介质的最大增益的控制参数之间的关系的第三处理，并且基于以下步骤执行调整控制参数的第四处理： 确定的关系。
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5.发明申请
公开(公告)号：US20150109620A1
公开(公告)日：2015-04-23
申请号：US14396978
申请日：2013-04-23
Inventor： Takao Fuji , Yutaka Nomura
CPC classification number: G01J11/00 , G01J3/2823 , G01J3/45 , G01J9/00 , G01J9/02 , G01J9/0246
Abstract: Provided are a method and an apparatus for measuring the spectral intensity and phase of a light pulse having an arbitrary time duration. The apparatus includes: a nonlinear mixing means for generating a signal light pulse expressed by the following Formula (★ denotes an operator representing general nonlinear mixing, and α denotes a coefficient which is proportional to a nonlinear susceptibility in the nonlinear mixing) by nonlinearly mixing a reference light pulse having an electric field Er(t−τ) delayed by an optical delay means and a measurement target light pulse having an electric field E0(t); and Er(t−τ)+αEr(t−τ)★E0(t) an imaging spectrum device for spectrally splitting the signal light pulse and outputting a Fourier transform signal expressed by the following Formula (F denotes a symbol indicating Fourier transform, * denotes a complex conjugate, and R denotes a symbol indicating a real part), |F[Er(t−τ)]|2+|αF[Er(t−τ)★E0(t)]|2+2R{αF[Er(t−τ)]*·F[Er(t−τ)★E0(t)]}.
Abstract translation: 提供了一种用于测量具有任意持续时间的光脉冲的光谱强度和相位的方法和装置。 该装置包括：非线性混合装置，用于产生由以下公式表示的信号光脉冲（★表示通用非线性混合的运算符，并且α表示与非线性混合中的非线性磁化率成比例的系数），通过非线性混合 具有由光延迟装置延迟的电场Er（t-τ）的参考光脉冲和具有电场E0（t）的测量目标光脉冲; 以及Er（t-τ）+αEr（t-τ）★E0（t）用于频谱分割信号光脉冲并输出由下式表示的傅里叶变换信号的成像光谱装置（F表示表示傅立叶变换的符号， | F [Er（t-τ）] | 2+ |αF[Er（t-τ）★E0（t）] | 2 + 2R { αF[Er（t-τ）] *·F [Er（t-τ）★E0（t）]}。
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公开(公告)号：US20140300898A1
公开(公告)日：2014-10-09
申请号：US13993189
申请日：2011-12-21
Applicant: Peter Johan Harmsma , Mirvais Yousefi
Inventor： Peter Johan Harmsma , Mirvais Yousefi
IPC: G01J9/02
CPC classification number: G01J9/0246 , G01J3/1895 , G01J9/00
Abstract: An optical measuring device measures a wavelength of a response from a sensing device. The optical measuring device contains a light path coupled to an interface for coupling the light path to the sensing device. A periodic optical filter has an input coupled to the light path, to sample light that is supplied to or received from the sensing device. A continuous output optical filter has an input coupled the light path to sample light that is supplied to or received from the sensing device. A computation circuit is coupled to detectors at the periodic optical filter and the continuous output optical filter. The computation circuit is programmed to process output signals from the detectors obtained during a wavelength scan. The processing involves quantization of data derived from the continuous filter wavelengths associated with respective time points at which the wavelength scan reaches corresponding positions in respective periods of the periodic optical filter. The processing computes a wavelength associated with the response of the sensing device from the identified wavelengths on the basis of a temporal relation between said respective time points and a time point of the response of the sensing device.
Abstract translation: 光学测量装置测量来自感测装置的响应的波长。 光学测量装置包含耦合到用于将光路耦合到感测装置的接口的光路。 周期性光学滤波器具有耦合到光路的输入，以对供应到或从感测装置接收的光进行采样。 连续输出滤光器具有将光路耦合到输入或从感测装置接收的采样光的输入。 计算电路耦合到周期性滤光器和连续输出滤光器上的检测器。 计算电路被编程为处理在波长扫描期间获得的检测器的输出信号。 该处理涉及从与周期性滤光器的各个周期中波长扫描到达对应位置的各个时间点相关联的连续滤波器波长导出的数据的量化。 该处理基于所述各个时间点之间的时间关系和感测装置的响应的时间点，根据识别的波长计算与感测装置的响应相关联的波长。
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公开(公告)号：US08693896B2
公开(公告)日：2014-04-08
申请号：US12936565
申请日：2009-02-03
Applicant: Ingo Breunig , Karsten Buse , Jens Kiessling , Bastian Knabe , Rosita Sowade
Inventor： Ingo Breunig , Karsten Buse , Jens Kiessling , Bastian Knabe , Rosita Sowade
IPC: H04B10/06
CPC classification number: G01J9/04 , G01J9/0246 , H04B10/2575 , H04B2210/006
Abstract: A method for processing received electromagnetic radiation includes receiving electromagnetic radiation having a plurality of carrier waves in the frequency range between 0.1 and 10 terahertz and having modulated onto the carrier waves information with a signal frequency of less than 50 GHz. The received radiation is filtered with a filter that is tunable in the frequency range from 0.1 to 10 terahertz so as to obtain at least one carrier wave as a terahertz signal. The terahertz signal is provided to a detection circuit that is sensitive to the terahertz signal frequency.
Abstract translation: 一种用于处理接收的电磁辐射的方法包括接收具有0.1至10太赫兹频率范围内的多个载波的电磁辐射，并且以小于50GHz的信号频率调制到载波信息上。 接收到的辐射用可在0.1至10太赫频率范围内调谐的滤波器滤波，以获得至少一个载波作为太赫兹信号。 太赫兹信号被提供给对太赫兹信号频率敏感的检测电路。
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8.发明授权Opto-electronic signal processing methods, systems, and apparatus for optical sensor interrogation 有权用于光学传感器询问的光电信号处理方法，系统和装置
公开(公告)号：US08477296B2
公开(公告)日：2013-07-02
申请号：US12758738
申请日：2010-04-12
Applicant: Denis Donlagic , Matej Njegovec
Inventor： Denis Donlagic , Matej Njegovec
IPC: G01N21/00
CPC classification number: H04J14/0221 , G01D5/35312 , G01J9/0246 , G01M11/00 , G01M11/31 , G01M11/3127 , G01M11/3136 , G01N21/00 , H01S5/02248 , H01S5/0612 , H01S5/0617 , H01S5/06804 , H01S5/0687
Abstract: Opto-electronic signal processing systems, apparatus and methods to extract a measured parameter from one or more interrogated optical sensors are disclosed. The apparatus includes an integrated laser module, an electronic control and processing unit, an optical coupling element, and one or more light receivers. Light is reflected back from the optical sensor through the optical coupling element to the light receiver(s). The electronic control and processing unit controls the wavelength of the integrated laser module using thermal control and, at the same time, detecting the wavelength of the integrated laser module using a wavelength selective element of the integrated laser module. According to the method, a wavelength sweep from the integrated laser module wavelength is swept, simultaneously measured and stored in memory of the electronic control and processing unit. The optical sensor response is recorded during the sweep and combined with stored emitted wavelengths to obtain spectral characteristics of interrogated optical sensor. Numerous other aspects are provided.
Abstract translation: 公开了一种从一个或多个询问光学传感器提取测量参数的光电信号处理系统，装置和方法。 该装置包括集成激光模块，电子控制和处理单元，光耦合元件和一个或多个光接收器。 光从光学传感器通过光耦合元件反射回到光接收器。 电子控制和处理单元使用热控制来控制集成激光模块的波长，同时使用集成激光模块的波长选择元件检测集成激光模块的波长。 根据该方法，将来自集成激光器模块波长的波长扫描扫描，同时测量并存储在电子控制和处理单元的存储器中。 在扫描期间记录光学传感器响应并与存储的发射波长组合以获得询问的光学传感器的光谱特性。 提供了许多其他方面。
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公开(公告)号：US07733494B2
公开(公告)日：2010-06-08
申请号：US11394513
申请日：2006-03-31
Applicant: Robert J. Rafac
Inventor： Robert J. Rafac
IPC: G01B9/02
CPC classification number: G01J3/02 , G01J3/027 , G01J3/26 , G01J3/2803 , G01J9/0246
Abstract: A method and apparatus for estimating bandwidth of laser output light is described which may include a dispersive element producing a dispersed output having a plurality of spectrum images from at least a portion of the laser output light. An array of light detecting elements is oriented to receive the dispersed output together with a shifting mechanism that moves the array, the dispersed output, or both, relative to each other. Electronics may be provided for determining the widths of at least two spectrum images at different phases of registration between the spectrum images and light detector elements and for averaging the widths to estimate a laser output bandwidth. The-spectrum images formed by the laser output light may be under-sampled, e.g., in the spatial or time domains.
Abstract translation: 描述了用于估计激光输出光的带宽的方法和装置，其可以包括产生具有来自激光输出光的至少一部分的多个光谱图像的分散输出的色散元件。 光检测元件的阵列被定向为接收分散的输出以及相对于彼此移动阵列，分散的输出或两者的移动机构。 可以提供电子装置用于确定在光谱图像和光检测器元件之间的不同注册阶段的至少两个光谱图像的宽度，并且用于平均宽度以估计激光输出带宽。 由激光输出光形成的光谱图像可以在例如空间或时域中被低采样。
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公开(公告)号：US20080259332A1
公开(公告)日：2008-10-23
申请号：US12165721
申请日：2008-07-01
Applicant: Kiyokazu Yamada , Shinji Tanaka , Hideaki Kobayashi
Inventor： Kiyokazu Yamada , Shinji Tanaka , Hideaki Kobayashi
IPC: G01J3/28
CPC classification number: G01J3/1256 , G01J3/02 , G01J3/0256 , G01J9/0246 , G01J9/04
Abstract: An optical spectrum analyzer detects a light output that is dependent on the frequency of light in a wavelength range of light to be measured. The optical spectrum analyzer includes a waveguide acousto-optic tunable filter including a piezoelectric substrate, optical waveguides, and an IDT, a light source for providing, to the waveguide acousto-optic tunable filter, reference light having a particular wavelength outside the wavelength range, a driving circuit for providing, to the waveguide acousto-optic tunable filter, a high frequency signal for exciting an IDT, and an arithmetic device that, on the basis of the wavelength of selected light when reference light is incident, and an exciting frequency, corrects the wavelength of the selected light, which is obtained from the light to be measured.
Abstract translation: 光谱分析仪检测取决于待测光的波长范围内的光的频率的光输出。 光谱分析仪包括波导声光可调谐滤波器，其包括压电基片，光波导和IDT，用于向波导声光可调谐滤波器提供在波长范围外具有特定波长的参考光的光源， 用于向波导声光可调滤波器提供用于激励IDT的高频信号的驱动电路，以及基于参考光入射时所选择的光的波长和激励频率的运算器件， 校正从被测光获得的所选择的光的波长。
