公开(公告)号：US20070065075A1

公开(公告)日：2007-03-22

申请号：US11232629

申请日：2005-09-22

Applicant: Alexander Berger ,  Robert Lieberman

Inventor： Alexander Berger ,  Robert Lieberman

IPC: G02B6/34 ,  G01J1/04 ,  G01J5/08 ,  G01J1/42

CPC classification number: G01J3/02 ,  G01J3/0218 ,  G01N21/7703 ,  G01N21/78 ,  G01N2021/7716 ,  G01N2021/7779 ,  G01N2021/7783 ,  G01N2201/0833 ,  G01N2201/088 ,  G02B6/441 ,  G02B6/4434

Abstract: A fiber optic sensor for sensing the presence of an analyte has a plurality of optical fibers each of which has at least one analyte sensing segment and one or more low loss lead portion, where the optical fibers are disposed on the periphery of a fiber carrier. The analyte sensing segments may be disposed in an offset relationship to provide continuous detection over a desired distance or they may be spaced apart to provide detection at selected locations. More than one set of optical fibers with sensing segments may be combined to provide detection of multiple analytes. Multiple fiber carriers allow each segment or the grouped sets of segments to be coupled together over a distance either in offset relationship or in spaced apart relationship.

Abstract translation: 用于感测分析物的存在的光纤传感器具有多个光纤，每个光纤具有至少一个分析物传感段和一个或多个低损耗引线部分，其中光纤设置在光纤载体的外围。 分析物感测段可以以偏移关系设置，以在期望距离上提供连续检测，或者它们可以间隔开以在选定位置提供检测。 可以组合具有感测段的多于一组光纤以提供多种分析物的检测。 多个光纤载体允许每个段或分组的段组在偏移关系或间隔开的关系中以一定距离耦合在一起。

公开(公告)号：US12044623B2

公开(公告)日：2024-07-23

申请号：US17584469

申请日：2022-01-26

Applicant: The Regents of the University of California ,  Brigham Young University

Inventor： Holger Schmidt ,  Aaron Roe Hawkins ,  Joshua Wayne Parks

IPC: G01N21/64 ,  B01L3/00 ,  G02B6/12 ,  G02B6/28 ,  G02F1/21

CPC classification number: G01N21/645 ,  B01L3/502715 ,  G02B6/12007 ,  G02F1/217 ,  B01L2200/10 ,  B01L2300/0654 ,  B01L2300/0663 ,  B01L2300/0816 ,  G01N2021/6417 ,  G01N2021/6419 ,  G01N2021/6484 ,  G01N2201/0635 ,  G01N2201/088 ,  G02B6/2813

Abstract: Systems, methods, and techniques for optofluidic analyte detection and analysis using multi-mode interference (MMI) waveguides are disclosed herein. In some embodiments, spatially and spectrally multiplexed optical detection of particles is implemented on an optofluidic platform comprising multiple analyte channels intersecting a single MMI waveguide. In some embodiments, multi-stage photonic structures including a first stage MMI waveguide for demultiplexing optical signals by spatially separating different wavelengths of light from one another may be implemented. In some embodiments, a second stage may use single-mode waveguides and/or MMI waveguides to create multi-spot patterns using the demultiplexed, spatially separated light output from the first stage. In some embodiments, liquid-core MMI (LC-MMI) waveguides that are tunable by replacing a liquid core, heating/cooling the liquid core, and/or deforming the LC-MMI to change its width may be implemented in one or more of the analyte detection/analysis systems disclosed herein.

公开(公告)号：US20180275048A1

公开(公告)日：2018-09-27

申请号：US15467361

申请日：2017-03-23

Applicant: Lakehead University

Inventor： Gautam Das

IPC: G01N21/3504 ,  G01N21/359 ,  G02B6/02

CPC classification number: G01N21/3504 ,  F16L15/008 ,  G01N21/359 ,  G01N21/39 ,  G01N2021/391 ,  G01N2201/088 ,  G02B6/02076 ,  G02B6/02328 ,  G02B6/4248

Abstract: Unique gas cell constructions based on a hollow-core photonic crystal fiber are used, for example, inside a fiber ring laser cavity as an intracavity gas cell. In one embodiment, two simple terminal blocks are coupled to opposite ends of the hollow-core photonic crystal fiber. Each block features a main through-bore with an optical window at one end and an optical fiber chuck fitted at the other end, while a transverse bore intersects the main bore and features a gas fitting for connection to a gas source or vacuum pump. In another embodiment, the hollow-core photonic crystal fiber is contained within an enclosure whose exterior walls are fitted with optical windows and gas ports. Inside the enclosure, fiber clamps supports the ends of the hollow-core photonic crystal fiber at positions adjacent to an in alignment with the optical windows.

公开(公告)号：US09995683B2

公开(公告)日：2018-06-12

申请号：US14308477

申请日：2014-06-18

Applicant: Industrial Technology Research Institute

Inventor： Chung-Fan Chiou ,  Rung-Ywan Tsai ,  Yu-Tang Li ,  Chih-Tsung Shih ,  Ming-Chia Li ,  Chang-Sheng Chu ,  Shuang-Chao Chung ,  Jung-Po Chen ,  Ying-Chih Pu

IPC: G01N21/00 ,  G01N21/64 ,  B82Y15/00 ,  G01N21/77 ,  G01N33/543

CPC classification number: G01N21/6486 ,  B82Y15/00 ,  G01N21/645 ,  G01N21/648 ,  G01N21/7703 ,  G01N33/54373 ,  G01N2021/6482 ,  G01N2021/6484 ,  G01N2201/088 ,  Y10S977/954 ,  Y10S977/957 ,  Y10S977/958 ,  Y10T436/143333 ,  Y10T436/145555

Abstract: An apparatus for detecting an object capable of emitting light. The apparatus includes a light source and a waveguide. The waveguide includes a core layer and a first cladding layer. At least one nanowell is formed in at least the first cladding layer. The apparatus further includes a light detector. The light detector can detect a light emitted from a single molecule object contained in the at least one nanowell.

公开(公告)号：US09970971B2

公开(公告)日：2018-05-15

申请号：US14494145

申请日：2014-09-23

Applicant: The Boeing Company

Inventor： Douglas R. Jungwirth ,  Anton M. Bouckaert

IPC: G01R13/00 ,  G01R29/027 ,  G01R17/00 ,  G01R19/00 ,  G01N21/88 ,  G01J1/42

CPC classification number: G01R29/027 ,  G01J1/42 ,  G01J2001/4238 ,  G01N21/88 ,  G01N2201/088 ,  G01R17/00 ,  G01R19/0046

Abstract: A method for monitoring degradation of a flashlamp including triggering the flashlamp to produce a light pulse, monitoring at least one parameter as a function of time to obtain a pulse waveform of the light pulse, comparing the pulse waveform to at least one reference pulse waveform to determine a difference therebetween, and flagging an end-of-lamp-life condition when the difference exceeds a predetermined threshold.

公开(公告)号：US09891166B2

公开(公告)日：2018-02-13

申请号：US15032794

申请日：2014-11-03

Applicant: UVic Industry Partnerships Inc.

Inventor： Peter M. Wild ,  Thomas M. Fyles ,  David A. Risk ,  David A. Sinton ,  Bo Bao ,  Luis Melo ,  Martin B. G. Jun ,  Geoff Burton

IPC: G01D5/353 ,  G01N21/45 ,  E21B47/10 ,  G01V9/00 ,  E21B47/12 ,  G01N21/77 ,  G01N33/18

CPC classification number: G01N21/45 ,  E21B47/10 ,  E21B47/123 ,  G01N21/774 ,  G01N33/18 ,  G01N2021/458 ,  G01N2201/062 ,  G01N2201/088 ,  G01N2201/12 ,  G01V9/007

Abstract: Fiber optic sensors include sensor regions in which an optical phase is modulated by an analyte to be detected. A long period fiber grating (LPG) is coupled to a coating that is arranged to selectively interact with the analyte. The resulting phase change is detected based on a transmission spectrum associated with the LPG so that analyte is detected and quantified. A plurality of such sensors is distributed along a fiber to form a sensor array that can be situated to detect analyte at a plurality of discrete regions.

公开(公告)号：US20170328840A1

公开(公告)日：2017-11-16

申请号：US15153565

申请日：2016-05-12

Applicant: NORTHROP GRUMMAN SYSTEMS CORPORATION

Inventor： DAVID W. EVANS

IPC: G01N21/88 ,  H04B10/079 ,  B64D45/00 ,  H04B10/25 ,  G01N21/27 ,  G01N21/84 ,  G01M17/007

CPC classification number: G01N21/8806 ,  B64D45/00 ,  B64D2045/0085 ,  B64F5/60 ,  G01L1/242 ,  G01M5/0016 ,  G01M5/0033 ,  G01M5/0066 ,  G01M17/007 ,  G01N21/27 ,  G01N2021/8472 ,  G01N2201/088 ,  H04B10/07953 ,  H04B10/25

Abstract: A method for detecting defects in a composite structure, such as in an aircraft structure, that includes sending an optical signal down an optical fiber embedded in the composite structure and analyzing the optical signal at a detector. If it is determined that the optical signal is turning on and off or an increase in the bit error rate is occurring at the detector, the composite structure may be delaminating or the composite structure may be somehow damaged. If it is determined that the composite structure is damaged, the optical signal can be sent down a different optical fiber that may not be at a location where the composite structure is damaged, and a continuous beam of light can be sent down the optical fiber that is at the damaged part of the composite structure to determine whether the damage is increasing.

公开(公告)号：US09772539B2

公开(公告)日：2017-09-26

申请号：US14819545

申请日：2015-08-06

Applicant: THE BOEING COMPANY

Inventor： Michael A. Carralero ,  Ty A. Larsen

IPC: G02F1/29 ,  G02F1/295 ,  A61B5/00 ,  G01N21/55 ,  G01D5/26 ,  G01N21/47 ,  G01B9/02 ,  G02B6/122

CPC classification number: G02F1/295 ,  A61B5/0059 ,  A61B5/0066 ,  G01B9/02091 ,  G01B2290/45 ,  G01D5/268 ,  G01N21/4795 ,  G01N21/55 ,  G01N2201/068 ,  G01N2201/088 ,  G02B6/1225

Abstract: An optical sensor and method of manufacture are provided herein. The optical sensor includes an optical fiber comprising a terminating end surface, and a photonic crystal coupled to the terminating end surface of the optical fiber.

公开(公告)号：US09733120B2

公开(公告)日：2017-08-15

申请号：US14903503

申请日：2013-08-12

Applicant: Halliburton Energy Services, Inc.

Inventor： Christopher L. Stokely ,  Neal G. Skinner ,  Leonardo de Oliveira Nunes

IPC: G01D5/353 ,  E21B47/12 ,  G01N29/14 ,  G01N29/24 ,  G01H3/00 ,  G01H9/00

CPC classification number: G01H9/004 ,  E21B47/123 ,  G01D5/35361 ,  G01H3/00 ,  G01N29/14 ,  G01N29/2418 ,  G01N2201/088

Abstract: A method and device for monitoring oil field operations with a fiber optic distributed acoustic sensor (DAS) that uses a continuous wave laser light source and modulates the continuous wave output of the laser light source with pseudo-random binary sequence codes.

公开(公告)号：US20170153388A1

公开(公告)日：2017-06-01

申请号：US15280183

申请日：2016-09-29

Applicant: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY

Inventor： Byung Kwon MIN ,  Hang Eun JOE ,  Hye Bin KIM ,  Seung Yoen NAM ,  Jin A BANG ,  Na Ha CHU

IPC: G02B6/02 ,  G01N21/552 ,  C03C25/68 ,  C03C25/46 ,  C03C25/22 ,  G02B6/27 ,  G01D5/26

CPC classification number: G02B6/02309 ,  C03C25/1063 ,  C03C25/22 ,  C03C25/223 ,  C03C25/46 ,  C03C25/68 ,  G01D5/35358 ,  G01N21/553 ,  G01N21/554 ,  G01N21/7703 ,  G01N2021/7736 ,  G01N2201/088 ,  G02B6/00 ,  G02B6/02052 ,  G02B6/2746

Abstract: Disclosed is an optical fiber including a plasmonic optical filter with a closed curved shape provided at, at least portion thereof. A method of manufacturing the plasmonic optical filter includes a step of exposing a core, a step of forming a thin metal film on the core through physical vapor deposition while rotating the core in a circumferential direction after changing a rotation axis of the core, and a step of patterning nanopatterns on the cylinder-shaped thin metal film using focused ion beam technique assisted with endpoint detection method. Due to such constitutions, an active area to generate an optical signal for optical sensor can be increased.