公开(公告)号：US20130134302A1

公开(公告)日：2013-05-30

申请号：US13816160

申请日：2011-04-19

Applicant: Kenji Sato

Inventor： Kenji Sato

IPC: G01J1/04

CPC classification number: G01J1/0459 ,  G02F7/00 ,  H04B10/07955

Abstract: An optical intensity determination unit includes: an optical input port; an optical output port; an optical resonator provided between the optical input port and the optical output port; a first light receiving element for converting at least a part of an optical signal output from a first output port of the optical resonator into an electric signal; a second light receiving element for converting at least a part of an optical signal output from a second output port of the optical resonator into an electric signal; a comparing circuit for determining magnitudes of the electric signals output from the first light receiving element and the second light receiving element to output a digital signal; and an optical branching circuit for branching light output from the second output port of the optical resonator into the optical output port and the second light receiving element. An optical intensity phase conversion unit for modulating an optical phase according to intensity of input light is provided in a part of a waveguide in the optical resonator.

Abstract translation: 光强决定单元包括：光输入端口; 光输出端口; 设置在光输入端口和光输出端口之间的光谐振器; 第一光接收元件，用于将从光谐振器的第一输出端口输出的光信号的至少一部分转换为电信号; 第二光接收元件，用于将从光谐振器的第二输出端口输出的光信号的至少一部分转换为电信号; 比较电路，用于确定从第一光接收元件和第二光接收元件输出的电信号的幅度以输出数字信号; 以及用于将从光谐振器的第二输出端口输出的光分支到光输出端口和第二光接收元件的光分支电路。 在光谐振器的波导的一部分中设置有用于根据输入光的强度来调制光学相位的光强度相位转换单元。

公开(公告)号：US20130087693A1

公开(公告)日：2013-04-11

申请号：US13646423

申请日：2012-10-05

Applicant: TELCORDIA TECHNOLOGIES, INC.

Inventor： Ted Woodward ,  Anjali Agarwal ,  Nicholas Peters

IPC: G01J1/04

CPC classification number: G01N21/17 ,  G01J1/0425 ,  G01J1/0459 ,  G01J1/42 ,  G01J1/58 ,  G01J3/4531 ,  G01N21/41 ,  G01S7/486 ,  G01S7/487 ,  G01S17/10 ,  G02B6/29338 ,  G02F1/3536 ,  G02F1/39 ,  G02F2001/392 ,  H01L31/0232 ,  H04B10/70

Abstract: Systems for enhancing the sensitivity of detecting an optical signal using nonlinear optics and method of performing the same. In one embodiment, a single-photon detection system includes an optical amplifier realized in a waveguide, and a photodetector coupled to an output of the optical amplifier. A light detection and ranging system includes the optical amplifier coupled to an optical source and one photodetector. In another embodiment, a photodetection system includes a plurality of optical frequency converters, coupled to an optical source, that sequentially convert a wavelength of photons of the optical source to a final wavelength, and a single-photon photodetector coupled to the optical frequency converters to detect single photons produced by the optical source. In another embodiment, an optical sensor includes an optical pump, and a transducer including an optical ring cavity coupled to the optical pump and configured to utilize optical four-wave mixing to detect an external stimulus.

公开(公告)号：US20130087692A1

公开(公告)日：2013-04-11

申请号：US13646404

申请日：2012-10-05

Applicant: Telcordia Technologies, Inc.

Inventor： Ted Woodward ,  Anjali Agarwal ,  Nicholas Peters

IPC: G01J1/04

CPC classification number: G01N21/17 ,  G01J1/0425 ,  G01J1/0459 ,  G01J1/42 ,  G01J1/58 ,  G01J3/4531 ,  G01N21/41 ,  G01S7/486 ,  G01S7/487 ,  G01S17/10 ,  G02B6/29338 ,  G02F1/3536 ,  G02F1/39 ,  G02F2001/392 ,  H01L31/0232 ,  H04B10/70

Abstract: Systems for enhancing the sensitivity of detecting an optical signal using nonlinear optics and method of performing the same. In one embodiment, a single-photon detection system includes an optical amplifier realized in a waveguide, and a photodetector coupled to an output of the optical amplifier. A light detection and ranging system includes the optical amplifier coupled to an optical source and one photodetector. In another embodiment, a photodetection system includes a plurality of optical frequency converters, coupled to an optical source, that sequentially convert a wavelength of photons of the optical source to a final wavelength, and a single-photon photodetector coupled to the optical frequency converters to detect single photons produced by the optical source. In another embodiment, an optical sensor includes an optical pump, and a transducer including an optical ring cavity coupled to the optical pump and configured to utilize optical four-wave mixing to detect an external stimulus.

公开(公告)号：US07372031B2

公开(公告)日：2008-05-13

申请号：US11384574

申请日：2006-03-20

Applicant: Stephen A. Cerwin ,  David B. Chang

Inventor： Stephen A. Cerwin ,  David B. Chang

IPC: G01J1/00

CPC classification number: G01J1/42 ,  G01J1/02 ,  G01J1/0295 ,  G01J1/04 ,  G01J1/0422 ,  G01J1/044 ,  G01J1/0459

Abstract: A sensitive photon detection system generates an electronic photon sensor signal as a K factor times a number N photons per unit time. The system is configured by combining a separate optical amplifier with a gain factor K1 with a photo detector with a gain factor K2 such that K may be realized as the product of K1 and K2. The values of K1 and K2 are chosen to meet a predetermined K while optimizing a signal quality of the photon sensor signal. The optical amplifier may be preceded by a photon gathering device and/or a light chopping device to further optimize system performance. Further, the photon sensor signal may be further processed analog circuitry or may be digitized and processed using digital signal processing to generate an enhanced photon sensor signal with enhanced signal quality by adding gain and/or bandwidth limiting.

Abstract translation: 敏感光子检测系统产生电子光子传感器信号作为每单位时间数N个光子的K因子。 该系统通过将具有增益因子K 1的单独光学放大器与增益因子K 2的光电检测器组合，使得可以实现K作为K 1和K 2的乘积来配置该系统。 选择K 1和K 2的值以在优化光子传感器信号的信号质量的同时满足预定的K。 光放大器之前可以有光子收集装置和/或光斩波装置，以进一步优化系统性能。 此外，光子传感器信号可以进一步处理模拟电路，或者可以使用数字信号处理进行数字化和处理，以通过增加增益和/或带宽限制来产生增强的信号质量的增强的光子传感器信号。

公开(公告)号：US4988859A

公开(公告)日：1991-01-29

申请号：US350273

申请日：1989-05-11

Applicant: Yutaka Tsuchiya ,  Shinichiro Aoshima

Inventor： Yutaka Tsuchiya ,  Shinichiro Aoshima

IPC: G01J1/02 ,  G01J1/04 ,  G01J1/42 ,  G01J1/44 ,  G01J11/00 ,  H01J31/50

CPC classification number: G01J1/04 ,  G01J1/0459 ,  G01J1/42 ,  H01J31/502 ,  G01J2001/4486

Abstract: An optical waveform measuring device, comprising an optical amplifier for amplifying a light beam under measurement and a photodetector to which a light beam amplified by the optical amplifier is applied.

Abstract translation: 一种光波形测量装置，包括用于放大测量光束的光放大器和由光放大器放大的光束的光电检测器。

公开(公告)号：US4299393A

公开(公告)日：1981-11-10

申请号：US140316

申请日：1980-04-14

Applicant: Willis J. Benckert ,  Richard J. Wangler

Inventor： Willis J. Benckert ,  Richard J. Wangler

IPC: F41G3/26 ,  F41J5/02 ,  G01J1/04

CPC classification number: F41G3/2622 ,  F41J5/02 ,  G01J1/04 ,  G01J1/0425 ,  G01J1/0459

Abstract: A target apparatus for detecting laser radiation, or the like, impinging thereon. The target has a support having a plurality of fiber optic fibers mounted thereon with their ends attached to a radiation detector and amplifier. A radiation scattering cover covers the fiber optic fibers on at least one side to scatter radiation impinging thereupon adjacent the fibers, thereby changing the angle of light entering the fibers to produce a signal on the detector to indicate a beam of radiation hitting the target.

Abstract translation: 用于检测激光辐射的目标装置等等。 目标具有安装有多个光纤的支撑件，其端部附接到辐射检测器和放大器。 辐射散射覆盖物覆盖至少一个侧面上的光纤纤维，以散射在其附近与光纤相邻的辐射辐射，从而改变进入光纤的光的角度，以在检测器上产生指示射击目标射线的信号。