公开(公告)号：US20110311223A1

公开(公告)日：2011-12-22

申请号：US13254624

申请日：2010-03-02

Applicant: Tsuyoshi Konishi ,  Takuya Kato ,  Hiroomi Goto

Inventor： Tsuyoshi Konishi ,  Takuya Kato ,  Hiroomi Goto

IPC: H04B10/08

CPC classification number: G01J11/00 ,  G01J3/02 ,  G01J3/0213 ,  G01J3/0218 ,  G01J3/0245

Abstract: Provided is a waveform reconstruction device capable of easily reconstructing an accurate time waveform of an optical signal without using an ultrafast time gate or a reference light source. A waveform reconstruction device (140) includes: a phase spectrum calculation unit (143) which (i) calculates a power spectrum of an output optical signal for each of a plurality of intensities of an input optical signal, when a phase spectrum of the input optical signal having the plurality of intensities is assumed to have a given phase spectrum, by simulating, using a parameter related to self-phase modulation of an optical fiber, propagation of the input optical signal through the optical fiber, and (ii) calculates, as the phase spectrum of the input optical signal, the given phase spectrum when a difference value between the calculated power spectrum and a measured power spectrum is equal to or less than a threshold value; and a waveform reconstruction unit (144) which reconstructs the time waveform of the input optical signal by performing frequency-time transform on the calculated phase spectrum and the power spectrum of the input optical signal.

Abstract translation: 提供一种波形重构装置，能够容易地重构光信号的精确时间波形而不使用超快时间门或参考光源。 波形重建装置（140）包括：相位谱计算单元（143），其对于输入光信号的多个强度中的每一个计算输出光信号的功率谱，当输入的相位谱 假设具有多个强度的光信号具有给定的相位频谱，通过使用与光纤的自相位调制有关的参数，通过光纤传播输入光信号，并且（ii） 作为输入光信号的相位频谱，当所计算的功率谱与测量的功率谱之间的差值等于或小于阈值时，给定的相位频谱; 以及波形重构单元（144），通过对计算出的相位频谱和输入光信号的功率谱进行频率 - 时间变换来重构输入光信号的时间波形。

公开(公告)号：US07939805B2

公开(公告)日：2011-05-10

申请号：US11155927

申请日：2006-05-18

Applicant: Leslie Brandon Shaw ,  Jasbinder S. Sanghera ,  Ishwar D. Aggarwal

Inventor： Leslie Brandon Shaw ,  Jasbinder S. Sanghera ,  Ishwar D. Aggarwal

IPC: G01B9/02 ,  G01J3/00 ,  G01J3/45

CPC classification number: G01J3/02 ,  G01J3/0218 ,  G01J3/0245 ,  G01J3/0256 ,  G01J3/06 ,  G01J3/453

Abstract: A Fourier-Transform Infrared (FTIR) spectrometer for operation in the mid- and long-wave infrared region (about 2-15 micron wavelengths) is disclosed. The FTIR spectrometer is composed of IR-transmitting fiber and uses a broadband IR source. A fiber stretcher is provided to provide a path difference between a first path and a second path having a sample associated therewith. Stretching of the fiber provides a path difference sufficient to generate an interferogram that can subsequently be analyzed to obtain information about a sample. A method for use of the apparatus of the invention is also disclosed. The method involves stretching of an IR-transmitting fiber to create a path difference sufficient to generate an interferogram. Various aspects of these features enable the construction of compact, portable spectrometers.

Abstract translation: 公开了用于在中长波红外区域（约2-15微米波长）中操作的傅里叶变换红外（FTIR）光谱仪。 FTIR光谱仪由红外发射光纤组成，使用宽带红外线源。 提供纤维拉伸器以提供具有与其相关联的样品的第一路径和第二路径之间的路径差。 纤维的拉伸提供足以产生干涉图的路径差异，随后可以分析干涉图以获得关于样品的信息。 还公开了本发明的装置的使用方法。 该方法涉及拉伸IR发射光纤以产生足以产生干涉图的路径差。 这些特征的各个方面使得能够构造紧凑的便携式光谱仪。

公开(公告)号：US20090204110A1

公开(公告)日：2009-08-13

申请号：US12366323

申请日：2009-02-05

Applicant: Mohammed N. Islam

Inventor： Mohammed N. Islam

IPC: A61B18/20 ,  H01S3/30 ,  G01B9/02 ,  G01J3/00 ,  H01S3/10

CPC classification number: G01J3/108 ,  G01B9/02091 ,  G01J3/0218 ,  G01J3/0245 ,  G01J3/42 ,  G01J2003/102 ,  G01J2003/423 ,  G02B6/29349 ,  G02F1/365 ,  G02F2001/3528 ,  G02F2202/32 ,  H01S3/06725 ,  H01S3/06754 ,  H01S3/094007 ,  H01S3/094069 ,  H01S3/094076 ,  H01S3/1024 ,  H01S3/302 ,  H01S5/0064 ,  H01S5/0085 ,  H01S5/0092 ,  H01S5/1092 ,  H01S5/146 ,  H01S5/4012 ,  H01S2301/085

Abstract: A broadband light source includes one or more laser diodes that are capable of generating a pump signal having a wavelength shorter than 2.5 microns, a pulse width of at least 100 picoseconds and a pump optical spectral width. The light source also includes one or more optical amplifiers that are coupled to the pump signal and are capable of amplifying the pump signal to a peak power of at least 500 W. The light source further includes a first fiber that is coupled to the one or more optical amplifiers. The first fiber including an anomalous group-velocity dispersion regime and a modulational instability mechanism that operates to modulate the pump signal. In one particular embodiment, the pump signal wavelength resides in the anomalous group-velocity dispersion regime of the first fiber and where different intensities in the pump signal can cause relative motion between different parts of the modulated pump signal produced through modulational instability in the first fiber. The light source also including a nonlinear element that is coupled to the first fiber that is capable of broadening the pump optical spectral width to at least 100 nm through a nonlinear effect in the nonlinear element.

Abstract translation: 宽带光源包括能够产生波长短于2.5微米的泵浦信号，至少100皮秒的脉冲宽度和泵浦光谱宽度的一个或多个激光二极管。 光源还包括耦合到泵浦信号并且能够将泵浦信号放大到至少500W的峰值功率的一个或多个光放大器。光源还包括第一光纤，其耦合到一个或 更多的光放大器。 第一光纤包括异常组 - 速度色散方案和用于调制泵浦信号的调制不稳定机制。 在一个具体实施例中，泵浦信号波长驻留在第一光纤的异常群 - 速度色散方案中，并且其中泵浦信号中的不同强度可引起通过第一光纤中的调制不稳定性产生的调制泵浦信号的不同部分之间的相对运动 。 光源还包括耦合到第一光纤的非线性元件，其能够通过非线性元件中的非线性效应将泵浦光谱宽度扩展至至少100nm。

公开(公告)号：US07266260B2

公开(公告)日：2007-09-04

申请号：US11325983

申请日：2006-01-05

Applicant: Hwa Yaw Tam ,  Weng Hong Chung

Inventor： Hwa Yaw Tam ,  Weng Hong Chung

IPC: G02B6/00 ,  G02B6/34 ,  G01N21/00

CPC classification number: G01J3/18 ,  G01B11/18 ,  G01J3/0245 ,  G01J3/1895 ,  G01J9/00 ,  H04J14/08

Abstract: A sensor device that uses a number of bragg grating (FBG) sensors and novel interrogation system with a ring cavity configuration for simultaneous time-division-multiplexex (TDM) and wavelength-division-multiplexed (WDM) interrogation of FBG sensors. The ring cavity includes an amplifier, and output coupler and an optical circulator. The coupler is connected to a wavelength measuring system and the optical circulator is connected to the FBG sensors. The FBG sensors can be in a number of groups. TDM interrogation is applied to each group of FBG sensors while WDM interrogation is applied to each FBG sensors within each group.

Abstract translation: 一种使用多个布拉格光栅（FBG）传感器和具有环形腔配置的新型询问系统的传感器设备，用于FBG传感器的同时时分复用（TDM）和波分复用（WDM）询问。 环形腔包括放大器，输出耦合器和光循环器。 耦合器连接到波长测量系统，光环行器连接到FBG传感器。 FBG传感器可以在多个组中。 TDM询问应用于每组FBG传感器，而WDM询问应用于每组中的每个FBG传感器。

公开(公告)号：EP3140636B1

公开(公告)日：2018-12-26

申请号：EP15723825.4

申请日：2015-05-08

Applicant: Danmarks Tekniske Universitet

Inventor： KRISTENSEN, Anders ,  VANNAHME, Christoph ,  DUFVA, Martin

IPC: G01N21/41 ,  G01N21/77 ,  G01J3/02 ,  G01J3/18 ,  G01J3/28 ,  H01S3/08 ,  H01S3/063 ,  H01S3/16 ,  H01S3/23 ,  G01J3/06

CPC classification number: G01N21/7743 ,  G01J3/0245 ,  G01J3/1895 ,  G01J3/2823 ,  G01J2003/064 ,  G01N21/4133 ,  G01N2021/7776 ,  G01N2021/7789 ,  G02B6/00 ,  G02B6/1225 ,  G02F1/39 ,  H01S3/0635 ,  H01S3/08009 ,  H01S3/168 ,  H01S3/2391

Abstract: A surface refractive index acquisition system for characterization of a sample is provided. The system comprises a grating device configured to receive the sample, and first and second grating regions. First and second grating periods are selected to provide optical resonances for light respectively in first and second wavelength bands. A light source is configured to illuminate part of the first and second grating regions simultaneously. An imaging system is configured to image light from the grating device and comprises an optical element focusing light in a transverse direction and being invariant in an orthogonal transverse direction, the optical element being oriented such that the longitudinal direction of the grating device is oriented to coincide with the invariant direction of the optical element, and an imaging spectrometer comprising an entrance slit having a longitudinal direction oriented to coincide with the invariant direction of the optical element.

公开(公告)号：EP3270125A1

公开(公告)日：2018-01-17

申请号：EP16179037.3

申请日：2016-07-12

Applicant: ams AG

Inventor： Enenkel, Jan

IPC: G01J3/02 ,  G01J1/04 ,  G01J3/28 ,  G01J3/36 ,  G01J1/42 ,  H01L27/14 ,  G01J1/58 ,  H01L31/0216 ,  H01L31/0232

CPC classification number: G01J1/0459 ,  G01J1/0492 ,  G01J1/429 ,  G01J1/58 ,  G01J3/0245 ,  G01J3/2803 ,  G01J3/36 ,  G01J2003/2806 ,  H01L27/14 ,  H01L31/02162 ,  H01L31/02322 ,  H02S40/44

Abstract: An optical sensor (100) comprises a stack of a substrate (101), a light sensitive component (102), a light conversion layer (104), and a filter layer (105). The substrate (101) has a main surface and the light sensitive component (102) is arranged on the main surface. Furthermore, the light sensitive component (102) is sensitive to a range of wavelengths specified by a spectral response characteristic. The light conversion layer (104) is arranged on the light sensitive component (102) and comprises a conversion material. The conversion material has an excitation band and a spectrally shifted emission band. In fact, the emission band at least partially overlaps with the spectral response characteristic of the light sensitive component (102). The filter layer (105) is arranged on the light conversion layer and has a transmission characteristic which is arranged to at least partially block light incident on the optical sensor (100) having a wavelength from the range of wavelengths specified by the spectral response characteristic of the light sensitive component (102).

Abstract translation: 光学传感器（100）包括基板（101），光敏部件（102），光转换层（104）和滤光层（105）的叠层。 基板（101）具有主表面，并且光敏部件（102）布置在主表面上。 此外，光敏部件（102）对由光谱响应特性指定的一系列波长敏感。 光转换层（104）被布置在光敏部件（102）上并且包括转换材料。 转换材料具有激发带和光谱偏移的发射带。 实际上，发射带至少部分地与光敏部件（102）的光谱响应特性重叠。 滤光层（105）设置在光转换层上并且具有透射特性，该透射特性设置成至少部分地阻挡入射到光学传感器（100）上的光，该光具有由光谱响应特性 光敏部件（102）。

公开(公告)号：EP2936626A4

公开(公告)日：2016-08-17

申请号：EP13863808

申请日：2013-12-17

Applicant: WELFORD DAVID ,  ELMAANAOUI BADR

Inventor： WELFORD DAVID ,  ELMAANAOUI BADR

IPC: H01S3/10 ,  G01J3/02 ,  G01J3/10 ,  G01J3/12

CPC classification number: G01J9/0246 ,  A61B5/0066 ,  A61B5/0073 ,  G01B9/02091 ,  G01J3/0245 ,  G01J3/10 ,  G01J3/12 ,  G01J2003/1213 ,  G01J2009/0226 ,  H01S3/06791

公开(公告)号：EP2936092A1

公开(公告)日：2015-10-28

申请号：EP13863946.3

申请日：2013-12-03

Applicant: Emx International, LLC

Inventor： LEE, Graybeal Daniel ,  ROGERS, Alan Carey

IPC: G01J3/42

CPC classification number: G01J3/10 ,  G01J3/0205 ,  G01J3/021 ,  G01J3/0218 ,  G01J3/0245 ,  G01J3/108 ,  G01J3/42 ,  G01N21/3504 ,  G01N21/39 ,  G01N2021/399 ,  G01N2201/06113 ,  G01N2201/0612 ,  G01N2201/0691 ,  G01N2201/0697 ,  G01N2201/08 ,  H01S5/3401

Abstract: An intracavity laser absorption infrared spectroscopy system for detecting trace analytes in vapor samples. The system uses a spectrometer in communications with control electronics, wherein the control electronics contain an analyte database that contains absorption profiles for each analyte the system is used to detect. The system can not only detect the presence of specific analytes, but identify them as well. The spectrometer uses a hollow cavity waveguide that creates a continuous loop inside of the device, thus creating a large path length and eliminating the need to mechanically adjust the path length to achieve a high Q-factor. In a preferred embodiment, the laser source may serve as the detector, thus eliminating the need for a separate detector.

公开(公告)号：EP1949151A4

公开(公告)日：2013-11-06

申请号：EP06837744

申请日：2006-11-16

Applicant: OMNI SCIENCES INC

Inventor： ISLAM MOHAMMED N

IPC: G02B6/00 ,  G02F1/35 ,  H01S3/067 ,  H01S3/30

CPC classification number: G01J3/108 ,  G01B9/02091 ,  G01J3/0218 ,  G01J3/0245 ,  G01J3/42 ,  G01J2003/102 ,  G01J2003/423 ,  G02B6/29349 ,  G02F1/365 ,  G02F2001/3528 ,  G02F2202/32 ,  H01S3/06725 ,  H01S3/06754 ,  H01S3/094007 ,  H01S3/094069 ,  H01S3/094076 ,  H01S3/1024 ,  H01S3/302 ,  H01S5/0064 ,  H01S5/0085 ,  H01S5/0092 ,  H01S5/1092 ,  H01S5/146 ,  H01S5/4012 ,  H01S2301/085

Abstract: A broadband light source includes one or more laser diodes that are capable of generating a pump signal having a wavelength shorter than 2.5 microns, a pulse width of at least 100 picoseconds and a pump optical spectral width. The light source also includes one or more optical amplifiers that are coupled to the pump signal and are capable of amplifying the pump signal to a peak power of at least 500 W. The light source further includes a first fiber that is coupled to the one or more optical amplifiers. The first fiber including an anomalous group-velocity dispersion regime and a modulational instability mechanism that operates to modulate the pump signal. In one particular embodiment, the pump signal wavelength resides in the anomalous group-velocity dispersion regime of the first fiber and where different intensities in the pump signal can cause relative motion between different parts of the modulated pump signal produced through modulational instability in the first fiber. The light source also including a nonlinear element that is coupled to the first fiber that is capable of broadening the pump optical spectral width to at least 100 nm through a nonlinear effect in the nonlinear element.

Abstract translation: 宽带光源包括能够产生波长短于2.5微米，脉冲宽度至少为100皮秒和泵浦光谱宽度的泵浦信号的一个或多个激光二极管。 光源还包括耦合到泵浦信号并且能够将泵浦信号放大到至少500W的峰值功率的一个或多个光学放大器。光源还包括第一光纤，其耦合到一个或 更多的光放大器。 第一光纤包括异常的群 - 速度色散方案以及调制泵浦信号的调制不稳定机制。 在一个特定实施例中，泵浦信号波长驻留在第一光纤的异常群 - 速度色散方案中，并且泵信号中的不同强度可引起通过第一光纤中的调制不稳定性产生的调制泵浦信号的不同部分之间的相对运动 。 光源还包括耦合到第一光纤的非线性元件，其能够通过非线性元件中的非线性效应将泵浦光谱宽度扩展至至少100nm。

公开(公告)号：EP2614354A2

公开(公告)日：2013-07-17

申请号：EP11823954.0

申请日：2011-08-26

Applicant: Saint-Gobain Performance Plastics Corporation

Inventor： FAMILIA, Aziz, Mahfoud ,  SHACKLEFORD, David, S. ,  MEKHILEF, Nafih ,  ZIMMERMAN, Mike, A.

IPC: G01N15/08 ,  G01N21/25 ,  G01N31/00

CPC classification number: G01J3/021 ,  G01J3/0245 ,  G01J3/42 ,  G01N15/082 ,  G01N21/3554 ,  G01N21/39 ,  G01N2021/399

Abstract: The present invention is directed to systems and methods which utilize a cavity ring-down spectroscopy (CRDS) technique implemented for the measurements of vapor transmission rate. In one embodiment, the vapor content to be measured is contained within an optical cavity. Light is then injected into the cavity up to a threshold level and the delay time of the injected light is measured. When the wavelength of the injected light is resonant with an absorption feature of the vapor the decay time increases linearly as a function of vapor content. In this manner, vapor content causes a longer delay time and thus the amount of vapor passing through the film (film permeation rate) can be determined in real-time.