公开(公告)号：US20240344891A1

公开(公告)日：2024-10-17

申请号：US18393142

申请日：2023-12-21

Applicant: The Regents of the University of California

Inventor： Kaikai Liu ,  Jiawei Wang ,  Andrei Isichenko ,  Nitesh Chauhan ,  Daniel J. Blumenthal

IPC: G01J9/02 ,  G02F1/21 ,  G02F1/225

CPC classification number: G01J9/02 ,  G02F1/212 ,  G02F1/225 ,  G01J2009/023 ,  G01J2009/0288 ,  G02F2203/15

Abstract: A device may include a first waveguide with an optical input at a first port. A device may include a second waveguide. A device may include a first coupler that optically couples the first waveguide to the second waveguide at a first position. A device may include a waveguide delay arm. A device may include a second coupler that optically couples the first waveguide to the second waveguide at a second position, the second position different from the first position.

公开(公告)号：US20230314185A1

公开(公告)日：2023-10-05

申请号：US17710682

申请日：2022-03-31

Applicant: Apple Inc.

Inventor： Tong Chen ,  Ahmet Fatih Cihan ,  Daryl I. Vulis ,  Mingzhou Jin

IPC: G01D5/26 ,  G01J9/02 ,  G01N15/14 ,  G06F3/03 ,  G06F3/01

CPC classification number: G01D5/266 ,  G01J9/0246 ,  G01N15/1434 ,  G06F3/0308 ,  G06F3/013 ,  G01J2009/0288 ,  G01N2015/1454 ,  G06F3/03545

Abstract: An optical sensor module includes an interferometric sensor and a set of one or more optical elements. The interferometric sensor includes a coherent light source and at least one detector configured to generate an interferometric signal. The set of one or more optical elements is configured to simultaneously direct a first portion of light emitted by the coherent light source toward a first focus area within a first depth of focus; direct a second portion of the light emitted by the coherent light source toward a second focus area within a second depth of focus; and direct portions of the emitted light that are returned from one or more objects within the first depth of focus or the second depth of focus toward the interferometric sensor.

公开(公告)号：US20240019310A1

公开(公告)日：2024-01-18

申请号：US17935118

申请日：2022-09-25

Applicant: Shanghai Haina Data Technology Company Ltd.

Inventor： Rui YIN ,  Qingjie HUANG ,  Zhaoqi LI

IPC: G01J9/02

CPC classification number: G01J9/02 ,  G01J2009/0288

Abstract: A method and system are for expanding a measuring range of a Mach-Zehnder sensor based on the calculation of optical length; the method includes: (1) performing calibration according to a known parameter to complete calibration of a Mach-Zehnder pressure sensor; and (2) for an unknown parameter, testing the unknown parameter first using the Mach-Zehnder sensor to acquire discrete data; processing the discrete data using a peak and valley synthesis algorithm to restore a diffraction order m; calculating an optical length value of the unknown parameter; and restoring, according to a calibrated relationship curve between the optical length and the parameter, the unknown parameter, thus expanding the measuring range of the Mach-Zehnder sensor to enable the Mach-Zehnder sensor to break through the limitation of the FSR and the spectral width of a light source. The measuring range can be theoretically expanded to infinitely great.

公开(公告)号：US09459406B2

公开(公告)日：2016-10-04

申请号：US14768239

申请日：2013-11-19

Applicant: NEC Corporation

Inventor： Takashi Matsumoto

IPC: G02B6/00 ,  G02F1/035 ,  G02B6/126 ,  G02B6/293 ,  G01J9/02 ,  G02B6/122 ,  G02B6/12

CPC classification number: G02B6/126 ,  G01J9/02 ,  G01J2009/0288 ,  G02B6/122 ,  G02B6/1228 ,  G02B6/29352 ,  G02B6/2938 ,  G02B2006/12097 ,  G02B2006/121

Abstract: Provided are a polarization beam splitter and an optical device with high productivity. A polarization beam splitter (PBS) according to an exemplary embodiment of the present invention includes: a demultiplexer (11) that is formed of a rib waveguide (50) and demultiplexes input light into first input light and second input light; a multiplexer (14) that is formed of the rib waveguide (50) and multiplexes the first input light and the second input light that are obtained by demultiplexing the input light by the demultiplexer (11); a first arm waveguide (12) that is formed of a channel waveguide (51) and guides the first input light to the multiplexer (11); and a second arm waveguide (13) that is formed of the channel waveguide (51), generates a phase difference in the first input light propagating through the first arm waveguide, and guides the second input light to the multiplexer (14).

Abstract translation: 提供了一种具有高生产率的偏振分束器和光学装置。 根据本发明的示例性实施例的偏振分束器（PBS）包括：解复用器（11），其由肋波导（50）形成，并且将输入光解复用为第一输入光和第二输入光; 多路复用器（14），其由所述肋波导（50）形成，并且通过由所述解复用器（11）解复用所输入的光而获得的所述第一输入光和所述第二输入光进行多路复用; 第一臂波导（12），其由通道波导（51）形成并将第一输入光引导到多路复用器（11）; 以及由通道波导（51）形成的第二臂波导（13），在通过第一臂波导传播的第一输入光中产生相位差，并将第二输入光引导到多路复用器（14）。

公开(公告)号：US20150029575A1

公开(公告)日：2015-01-29

申请号：US14384550

申请日：2013-03-14

Applicant: Sumitomo Osaka Cement Co., Ltd.

Inventor： Tokutaka Hara ,  Youichi Hosokawa

IPC: H01S3/11 ,  H01S3/13 ,  G02F1/225 ,  H01S3/00

CPC classification number: H01S3/11 ,  G01J3/0205 ,  G01J3/0291 ,  G01J3/10 ,  G01J3/26 ,  G01J3/2823 ,  G01J3/45 ,  G01J3/453 ,  G01J9/02 ,  G01J11/00 ,  G01J2009/0288 ,  G01N21/3581 ,  G02F1/01 ,  G02F1/21 ,  G02F1/2252 ,  G02F1/2255 ,  G02F1/2257 ,  G02F2001/212 ,  G02F2201/16 ,  G02F2203/13 ,  G02F2203/50 ,  G02F2203/56 ,  H01S3/0057 ,  H01S3/0085 ,  H01S3/06754 ,  H01S3/1301 ,  H01S5/12 ,  H01S2301/08

Abstract: Provided is an optical pulse-generator and an optical pulse-generating method which are capable of generating an optical pulse train with an arbitrary pattern. An optical pulse-generator 1 includes a first optical modulator 21 configured to modulate input light using a first modulation signal SIG1 to generate optical pulses, a second optical modulator 41 configured to perform a modulation operation using a second modulation signal SIG2 synchronizing with the first modulation signal SIG1 and having a signal pattern that is set to output only specific part of the optical pulses, and a dispersion compensator 30 configured to compensate a chirp of the optical pulse output from the first optical modulator 21.

Abstract translation: 提供了能够产生任意图案的光脉冲串的光脉冲发生器和光脉冲产生方法。 光脉冲发生器1包括第一光调制器21，其被配置为使用第一调制信号SIG1调制输入光以产生光脉冲;第二光调制器41，被配置为使用与第一调制同步的第二调制信号SIG2执行调制操作 信号SIG1，具有被设定为仅输出光脉冲的特定部分的信号图案;以及色散补偿器30，被配置为补偿从第一光调制器21输出的光脉冲的啁啾。

公开(公告)号：US5115127A

公开(公告)日：1992-05-19

申请号：US585331

申请日：1990-09-17

Applicant: Lloyd C. Bobb ,  Barbara J. White ,  Jon P. Davis ,  Arthur Samouris

Inventor： Lloyd C. Bobb ,  Barbara J. White ,  Jon P. Davis ,  Arthur Samouris

IPC: G01J9/02 ,  G01M11/00 ,  G01N21/45 ,  G01N25/18

CPC classification number: G01M11/331 ,  G01M11/33 ,  G01N21/45 ,  G01N25/18 ,  G01J2009/0226 ,  G01J2009/0288

Abstract: A physical property of a fluid or of any optical fiber is measured using anptical fiber interferometer. A conductive material is disposed upon the surface of a region of a light tranmitting optical fiber and the region having the conductive material is disposed in the fluid. Light energy is applied to one end of the fiber and transmitted light is received at the other end of the fiber. Electrical energy is applied to the conductive material disposed upon the surface of the fiber to heat the region of the fiber and cause a change in the optical path length of the light transmitted through the fiber. The physical property of the fluid or optical fiber is determined in accordance with the change in the optical path length or phase of the received light caused by applying the electrical energy to the conductive material. Thermal conductivity is measured using a series of short energy pulses and determining the average phase change. The flow rate of a fluid is measured by measuring the phase change and applied electrical energy upon heating the fiber to an equilibrium temperature. The conductive material is gold and it encircles the fiber. The gold may be disposed on the jacket of the fiber or the jacket may be removed before disposing the gold.

Abstract translation: 使用光纤干涉仪测量流体或任何光纤的物理性质。 导电材料设置在光发射光纤的区域的表面上，并且具有导电材料的区域设置在流体中。 光能被施加到光纤的一端，透射光被接收在光纤的另一端。 将电能施加到设置在光纤表面上的导电材料，以加热光纤的区域并引起透过光纤的光的光程长度的变化。 根据通过将电能施加到导电材料而引起的接收光的光程长度或相位的变化来确定流体或光纤的物理性质。 使用一系列短能量脉冲测量热导率并确定平均相变。 通过在将纤维加热至平衡温度时测量相变和施加的电能来测量流体的流速。 导电材料是金，它包围纤维。 金可以设置在纤维的护套上，或者在处理金之前可以去除护套。

公开(公告)号：US09939249B1

公开(公告)日：2018-04-10

申请号：US15418956

申请日：2017-01-30

Applicant: Scott E. Spence

Inventor： Scott E. Spence

IPC: G01B9/02 ,  G02B27/10

CPC classification number: G01B9/02 ,  G01J9/02 ,  G01J2009/0261 ,  G01J2009/0288 ,  G01N21/45 ,  G02B27/10 ,  G02B27/283

Abstract: A birefringent Mach-Zehnder interferometer (MZI) is provided for optically sensing a small fluctuation from an un-polarized light beam. The birefringent MZI includes first and second birefringent crystals arranged coaxially, the first crystal to receive the beam; and first and second 45° polarizers positioned behind respective the first and second crystals. The first crystal divides the beam into first ordinary and extraordinary rays. The first polarizer converts the first rays into first 45° rays. The second crystal divides the first 45° rays into second ordinary, extraordinary and recombination rays. The second polarizer converts the second rays into second 45° rays.

公开(公告)号：US20170331550A1

公开(公告)日：2017-11-16

申请号：US15151797

申请日：2016-05-11

Applicant: Coriant Advanced Technology, LLC

Inventor： Yang Liu ,  Yangjin Ma ,  Michael J. Hochberg

IPC: H04B10/079 ,  G01J3/45 ,  H04B10/516 ,  H04B10/572

CPC classification number: H04B10/07957 ,  G01J3/0218 ,  G01J3/0237 ,  G01J3/0256 ,  G01J3/32 ,  G01J3/4531 ,  G01J9/0246 ,  G01J2003/1213 ,  G01J2003/1269 ,  G01J2009/0249 ,  G01J2009/0288

Abstract: An optical spectrum analyzer (OSA) for measuring an optical spectrum of an input optical signal in a measurement wavelength range is provided. The OSA comprises a modulator, an integrated optical filter, and a photodetector. The modulator modulates the input optical signal by applying a dither modulation to facilitate detection and noise rejection. The integrated optical filter, which may include a ring resonator system, is sequentially tunable to selectively transmit each wavelength of the modulated optical signal in the measurement wavelength range. The photodetector sequentially detects each wavelength of the modulated optical signal in the measurement wavelength range to provide a representative output electrical signal.

公开(公告)号：US20150378098A1

公开(公告)日：2015-12-31

申请号：US14768239

申请日：2013-11-19

Applicant: NEC CORPORATION

Inventor： Takashi MATSUMOTO

IPC: G02B6/126 ,  G02B6/122 ,  G02B6/293 ,  G01J9/02

CPC classification number: G02B6/126 ,  G01J9/02 ,  G01J2009/0288 ,  G02B6/122 ,  G02B6/1228 ,  G02B6/29352 ,  G02B6/2938 ,  G02B2006/12097 ,  G02B2006/121

Abstract: Provided are a polarization beam splitter and an optical device with high productivity. A polarization beam splitter (PBS) according to an exemplary embodiment of the present invention includes: a demultiplexer (11) that is formed of a rib waveguide (50) and demultiplexes input light into first input light and second input light; a multiplexer (14) that is formed of the rib waveguide (50) and multiplexes the first input light and the second input light that are obtained by demultiplexing the input light by the demultiplexer (11); a first arm waveguide (12) that is formed of a channel waveguide (51) and guides the first input light to the multiplexer (11); and a second arm waveguide (13) that is formed of the channel waveguide (51), generates a phase difference in the first input light propagating through the first arm waveguide, and guides the second input light to the multiplexer (14).

Abstract translation: 提供了一种具有高生产率的偏振分束器和光学装置。 根据本发明的示例性实施例的偏振分束器（PBS）包括：解复用器（11），其由肋波导（50）形成，并且将输入光解复用为第一输入光和第二输入光; 多路复用器（14），其由所述肋波导（50）形成，并且通过由所述解复用器（11）解复用所输入的光而获得的所述第一输入光和所述第二输入光进行多路复用; 第一臂波导（12），其由通道波导（51）形成并将第一输入光引导到多路复用器（11）; 以及由通道波导（51）形成的第二臂波导（13），在通过第一臂波导传播的第一输入光中产生相位差，并将第二输入光引导到多路复用器（14）。

公开(公告)号：US08953169B2

公开(公告)日：2015-02-10

申请号：US13882800

申请日：2011-11-02

Applicant: Herve Lefevre ,  Cedric Molucon ,  Jean-Jacques Bonnefois ,  Karl Aubry

Inventor： Herve Lefevre ,  Cedric Molucon ,  Jean-Jacques Bonnefois ,  Karl Aubry

IPC: G01B9/02 ,  G01J9/02

CPC classification number: G01B9/02055 ,  G01J9/0246 ,  G01J2009/023 ,  G01J2009/0261 ,  G01J2009/0288

Abstract: An interferometric system includes a polarization separation element (10), a first polarization conversion element (11), a Mach-Zehnder interferometer (2) including a first (4) and second (5) arms connected to one another by a first (6) and second (7) ends in order for a first and second beams (20, 21) having the same polarization to pass through the interferometer in a reciprocal manner in opposite directions of propagation, respectively, so as to form a first and second interferometric beam (22, 23), a second polarization conversion element (11) for obtaining an interferometric beam (24), the polarization of which is converted, a polarization-combining element (10), and a detection element (8) suitable for detecting an output beam (25).

Abstract translation: 干涉测量系统包括偏振分离元件（10），第一偏振转换元件（11），马赫曾德尔干涉仪（2），其包括通过第一（6）和第二（6）彼此连接的第一（4）和第二（5） ）和第二（7）端部，以使具有相同偏振的第一和第二光束（20,21）分别以相反的传播方向以相互的方式穿过干涉仪，以便形成第一和第二干涉仪 光束（22,23），用于获得其偏振变换的干涉光束（24）的第二偏振转换元件（11），偏振组合元件（10）和适于检测的检测元件（8） 输出光束（25）。