公开(公告)号：US07054008B2

公开(公告)日：2006-05-30

申请号：US10367806

申请日：2003-02-19

Applicant: Chuji Wang ,  Christopher Winstead ,  Yixiang Duan

Inventor： Chuji Wang ,  Christopher Winstead ,  Yixiang Duan

IPC: G01N21/01 ,  G01N21/61

CPC classification number: G01J3/42 ,  G01N21/39 ,  G01N21/73

Abstract: Provided is a novel system for conducting elemental measurements using cavity ring-down spectroscopy (CRDS). The present invention provides sensitivity thousands of times improved over conventional devices and does so with the advantages of low power, low plasma flow rate, and the ability being sustained with various gases.

Abstract translation: 提供了一种用于使用空腔衰减光谱（CRDS）进行元素测量的新颖系统。 本发明提供了比常规装置改进数千次的灵敏度，并且具有低功率，低等离子体流速以及用各种气体维持的能力的优点。

公开(公告)号：US07323677B1

公开(公告)日：2008-01-29

申请号：US11181798

申请日：2005-07-15

Applicant: Chuji Wang

Inventor： Chuji Wang

IPC: G01J1/04 ,  G01J1/42 ,  G01J5/08

CPC classification number: G01J5/08 ,  G01J5/0803 ,  G01J5/0821 ,  G01J5/58

Abstract: A device comprising a fiber grating loop ringdown (FGLRD) system of analysis is disclosed. A fiber Bragg grating (FBG) or Long-Period grating (LPG) written in a section of single mode fused silica fiber is incorporated into a fiber loop. By utilizing the wing areas of the gratings' bandwidth as a wavelength dependent attenuator of the light transmission, a fiber grating loop ringdown concept is formed. One aspect of the present invention is temperature sensing, which has been demonstrated using the disclosed device. Temperature measurements in the areas of accuracy, stability, high temperature, and dynamic range are also described.

Abstract translation: 公开了一种包括光纤光栅环路闭环（FGLRD）分析系统的装置。 写入单模熔融石英光纤部分的光纤布拉格光栅（FBG）或长周期光栅（LPG）被并入到光纤回路中。 通过利用光栅带宽的翼区作为光传输的波长依赖衰减器，形成了光纤光栅环路环形衰落概念。 本发明的一个方面是使用所公开的装置证明了温度感测。 还描述了在精度，稳定性，高温和动态范围方面的温度测量。

公开(公告)号：US20050103988A1

公开(公告)日：2005-05-19

申请号：US10960075

申请日：2004-10-08

Applicant: Chuji Wang

Inventor： Chuji Wang

IPC: G01J1/04 ,  G01J5/08 ,  G01L1/24

CPC classification number: G01L1/243

Abstract: A novel fiber ringdown (FRP) pressure sensor is provided for measuring extremely high pressures under extreme environmental conditions of cold and heat. Pressure measurements are achieved in a time domain by measuring ringdown times of emitted light through the fiber optic loop of the device. The novel FRP sensor can include a light source, such as a diode laser light source, two 2×1 fiber couplers, a section of fused silica single mode fiber, a photodetector, and an electronic control. The novel FRP sensor's performance in the areas of stability, reproducibility, dynamic range, and temperature tolerance are far above those of conventional sensors.

Abstract translation: 提供了一种新型的光纤阻尼（FRP）压力传感器，用于在极端的寒冷和高温环境条件下测量极高的压力。 通过测量通过装置的光纤环路的发射光的衰减时间，在时域中实现压力测量。 新型FRP传感器可以包括诸如二极管激光光源的光源，两个2x1光纤耦合器，熔融石英单模光纤的一部分，光电检测器和电子控制器。 新型FRP传感器在稳定性，重现性，动态范围和耐温性方面的性能远远高于常规传感器。

公开(公告)号：US07277177B2

公开(公告)日：2007-10-02

申请号：US11252128

申请日：2005-10-17

Applicant: Robert Augustine ,  Calvin R. Krusen ,  Chuji Wang ,  Wen-Bin Yan

Inventor： Robert Augustine ,  Calvin R. Krusen ,  Chuji Wang ,  Wen-Bin Yan

IPC: G01N21/61

CPC classification number: G01J3/10 ,  G01N21/39

Abstract: An apparatus and method for controlling a light source used in Cavity Ring-Down Spectroscopy. The apparatus comprises a controller that generates a control signal to activate and deactivate the light source based on a comparison of an energy signal from a resonant cavity and a threshold. The light source is activated for a time period based on the stabilization time of the light source and the time necessary to provide sufficient energy to the resonant cavity. Thereafter the controller deactivates the light source for a predetermined time period by interrupting its current source so that the light energy in the cavity rings down and so that the presence of analyte can be measured. The light energy from the light source is directly coupled to the resonant cavity from the light source.

Abstract translation: 用于控制腔内环形光谱法中使用的光源的装置和方法。 该装置包括控制器，该控制器基于来自谐振腔的能量信号与阈值的比较产生控制信号以激活和去激活光源。 基于光源的稳定时间和为谐振腔提供足够的能量所需的时间，光源被激活一段时间。 此后，控制器通过中断其电流源使预定时间段的光源去激活，使得空腔中的光能环向下，并且可以测量分析物的存在。 来自光源的光能直接从光源耦合到谐振腔。

公开(公告)号：US07241986B2

公开(公告)日：2007-07-10

申请号：US10960075

申请日：2004-10-08

Applicant: Chuji Wang

Inventor： Chuji Wang

IPC: G01J1/04 ,  G01J1/42 ,  G01J5/08

CPC classification number: G01L1/243

Abstract: A novel fiber ringdown (FRP) pressure sensor is provided for measuring extremely high pressures under extreme environmental conditions of cold and heat. Pressure measurements are achieved in a time domain by measuring ringdown times of emitted light through the fiber optic loop of the device. The novel FRP sensor can include a light source, such as a diode laser light source, two 2×1 fiber couplers, a section of fused silica single mode fiber, a photodetector, and an electronic control. The novel FRP sensor's performance in the areas of stability, reproducibility, dynamic range, and temperature tolerance are far above those of conventional sensors.

Abstract translation: 提供了一种新型的光纤阻尼（FRP）压力传感器，用于在极端的寒冷和高温环境条件下测量极高的压力。 通过测量通过装置的光纤环路的发射光的衰减时间，在时域中实现压力测量。 新型FRP传感器可以包括诸如二极管激光光源的光源，两个2x1光纤耦合器，熔融石英单模光纤的一部分，光电检测器和电子控制器。 新型FRP传感器在稳定性，重现性，动态范围和耐温性方面的性能远远高于常规传感器。

公开(公告)号：US20060087655A1

公开(公告)日：2006-04-27

申请号：US11252128

申请日：2005-10-17

Applicant: Robert Augustine ,  Calvin Krusen ,  Chuji Wang ,  Wen-Bin Yan

Inventor： Robert Augustine ,  Calvin Krusen ,  Chuji Wang ,  Wen-Bin Yan

IPC: G01N21/61

CPC classification number: G01J3/10 ,  G01N21/39

Abstract: An apparatus and method for controlling a light source used in Cavity Ring-Down Spectroscopy. The apparatus comprises a controller that generates a control signal to activate and deactivate the light source based on a comparison of an energy signal from a resonant cavity and a threshold. The light source is activated for a time period based on the stabilization time of the light source and the time necessary to provide sufficient energy to the resonant cavity. Thereafter the controller deactivates the light source for a predetermined time period by interrupting its current source so that the light energy in the cavity rings down and so that the presence of analyte can be measured. The light energy from the light source is directly coupled to the resonant cavity from the light source.

Abstract translation: 用于控制腔内环形光谱法中使用的光源的装置和方法。 该装置包括控制器，该控制器基于来自谐振腔的能量信号与阈值的比较产生控制信号以激活和去激活光源。 基于光源的稳定时间和为谐振腔提供足够的能量所需的时间，光源被激活一段时间。 此后，控制器通过中断其电流源使预定时间段的光源去激活，使得空腔中的光能环向下，并且可以测量分析物的存在。 来自光源的光能直接从光源耦合到谐振腔。