FI109490B - Fiberoptisk töjningsavkännare samt framställning därav - Google Patents
Fiberoptisk töjningsavkännare samt framställning därav Download PDFInfo
- Publication number
- FI109490B FI109490B FI963625A FI963625A FI109490B FI 109490 B FI109490 B FI 109490B FI 963625 A FI963625 A FI 963625A FI 963625 A FI963625 A FI 963625A FI 109490 B FI109490 B FI 109490B
- Authority
- FI
- Finland
- Prior art keywords
- fiber
- diameters
- deflection
- optical
- core
- Prior art date
Links
- 239000000835 fiber Substances 0.000 title claims description 113
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 239000013307 optical fiber Substances 0.000 claims description 43
- 238000010891 electric arc Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 9
- 230000003287 optical effect Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims 1
- 239000000758 substrate Substances 0.000 description 5
- 238000003466 welding Methods 0.000 description 4
- 229920001410 Microfiber Polymers 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000003658 microfiber Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 239000012510 hollow fiber Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 102000029749 Microtubule Human genes 0.000 description 1
- 108091022875 Microtubule Proteins 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229920006332 epoxy adhesive Polymers 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 210000004688 microtubule Anatomy 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000005304 optical glass Substances 0.000 description 1
- 238000000253 optical time-domain reflectometry Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
- G01L1/242—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/10—Non-chemical treatment
- C03B37/14—Re-forming fibres or filaments, i.e. changing their shape
- C03B37/15—Re-forming fibres or filaments, i.e. changing their shape with heat application, e.g. for making optical fibres
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
- G01B11/18—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge using photoelastic elements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
- G01L1/242—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre
- G01L1/243—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre using means for applying force perpendicular to the fibre axis
- G01L1/245—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre using means for applying force perpendicular to the fibre axis using microbending
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/255—Splicing of light guides, e.g. by fusion or bonding
- G02B6/2552—Splicing of light guides, e.g. by fusion or bonding reshaping or reforming of light guides for coupling using thermal heating, e.g. tapering, forming of a lens on light guide ends
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
- G02B6/2821—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using lateral coupling between contiguous fibres to split or combine optical signals
- G02B6/2835—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using lateral coupling between contiguous fibres to split or combine optical signals formed or shaped by thermal treatment, e.g. couplers
- G02B2006/2839—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using lateral coupling between contiguous fibres to split or combine optical signals formed or shaped by thermal treatment, e.g. couplers fabricated from double or twin core fibres
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/02057—Optical fibres with cladding with or without a coating comprising gratings
- G02B6/02071—Mechanically induced gratings, e.g. having microbends
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Claims (12)
1. Ett förfarande för att framställa en optisk fiber vars 1jusöverföringsegenskaper varierar i förhällande tili olika sträckningstillstand hos fibern och vilken fiber särskilt innefattar ett omräde där det uppstär en lokal störning i brytningskoefficienten eller en lokal förändring intill fiberkärnan, da omrädet utsätts för en mekanisk belastning, särskilt en sträckbelastning eller en sammanpressande belastning eller en böjbelastning, särskilt ett omräde som innefattar mikroböjning, kännetecknat av att man lokalt uppvärmer fibern pä ett litet omräde vars utsträckning i fiberns längdriktning motsvarar högst ett fätal fiberdiametrar, varvid denna utsträckning särskilt utgör mindre än 5 fiberdiametrar.
2. Förfarande enligt patentkrav 1, kännetecknat av att man utför den lokala uppvärmningen inom detta omräde genom fiberns hela tjocklek och omkring fiberns hela omkrets. • · • · t
* • · • · · • / 3. Förfarande enligt nägot av patentkraven 1 eller 2, • · I if·" kännetecknat av att man vid den lokala uppvärmningen för att • · · • · • ; ästadkomma en S-formig böjning förflyttar pä vardera sidan av II» • t I "I det uppvärmda omrädet befintliga avsnitt av fibern i • · · förhällande tili varandra i en riktning som är väsentligen . . vinkelrät i förhällande tili fiberns längdriktning.
4. Ett förfarande för att framställa en optisk fiber vars ·'*: ·' 1 jusöverföringsegenskaper varierar i förhällande tili fiberns * · ’···' olika sträckningstillständ, kännetecknat av att • - man framställer en optisk fiber som har en hälighet i *·,'*! längdriktningen, vilken hälighet sträcker sig i fiberns 14 109490 längdriktning inom fiberns skal pä ett visst avständ frän fiberns kärna, - man uppvärmer denna ihäliga fiber lokalt pä ett litet omräde vars utsträckning i fiberns längdriktning motsvarar högst ett fatal fiberdiametrar, varvid denna utsträckning särskilt utgör mindre än 5 fiberdiametrar.
5. Förfarande enligt nägot av patentkraven 1 - 4, kännetecknat av att man utför uppvärmningen med hjälp av en elbäge.
6. Förfarande enligt nägot av patentkraven 1-5, kännetecknat av att man utför uppvärmningen med hjälp av en ljussträle vars intensitet är stor och som man fär särskilt ur en laser.
7. En optisk fiber för att användas som detektor, kännetecknad av att fiberns kärna omfattar en S-formig böjning där en parallellförskjutning av de avsnitt av fibern som * · ··· - ligger intill böjningen till sin storlek utgör högst ett fatal • » *· f iberdiametrar, varvid denna förskjutning särskilt utgör * · mindre än tvä f iberdiametrar, betraktad i en riktning * · · • ·’ vinkelrätt emot fiberns längdriktning.
• * · *·* ’ 8. Optisk fiber enligt patentkrav 7, kännetecknad av att den omfattar tvä kärnor i vilka bäda kärnor man ästadkommit nämnda • · · böjning. i.i
: 9. Optisk fiber enligt patentkrav 8, kännetecknad av att dessa bäda kärnor och särskilt de tili desamma hörande omräden vilka innehäller böjningen ligger i väsentligen samma pian. • · 15 109490
10. En optisk fiber att användas som detektor, kannetecknad av att man i fiberns kärna ästadkommit en böjning vars form motsvarar en avvikelse frän en väsentligen rak förlängning av den intill böjningen belägna fiberkärnan, varvid denna avvikelses höjd är högst hälften av fiberns radie och dess längd är högst 5 skaldiametrar, särskilt högst tvä skaldiametrar.
11. Optisk fiber enligt patentkrav 10, kännetecknad av att fibern är en med en längsriktad hälighet försedd fiber och att häligheten som hör tili fibern är sluten intill böjningen i kärnan.
12. En optisk fiber för att användas som detektor, där fibern har en längsriktad hälighet som sträcker sig parallellt med fiberns kärna, kännetecknad av att den längsriktade häligheten i fibern är sluten i fiberns längdriktning för en sträcka som motsvarar högst 5 skaldiametrar och som motsvarar särskilt högst tvä skaldiametrar. • · • ♦ • · * * ♦ « * * · • « • · * · · • · * • « • * ♦ • « · • · · * * • * ♦ • * * * ♦ • » ♦ * · • »
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9400873A SE502553C2 (sv) | 1994-03-15 | 1994-03-15 | Optisk fiber för sensorändamål och sätt att framställa den optiska fibern |
| SE9400873 | 1994-03-15 | ||
| PCT/SE1995/000265 WO1995025258A1 (en) | 1994-03-15 | 1995-03-15 | Fiber optical strain sensor and the manufacture thereof |
| SE9500265 | 1995-03-15 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| FI963625A FI963625A (sv) | 1996-09-13 |
| FI963625A0 FI963625A0 (sv) | 1996-09-13 |
| FI109490B true FI109490B (sv) | 2002-08-15 |
Family
ID=20393287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI963625A FI109490B (sv) | 1994-03-15 | 1996-09-13 | Fiberoptisk töjningsavkännare samt framställning därav |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US6003340A (sv) |
| EP (1) | EP0750734B1 (sv) |
| JP (1) | JP3187840B2 (sv) |
| CN (1) | CN1060266C (sv) |
| AU (1) | AU2089595A (sv) |
| DE (1) | DE69527051D1 (sv) |
| FI (1) | FI109490B (sv) |
| SE (1) | SE502553C2 (sv) |
| WO (1) | WO1995025258A1 (sv) |
Families Citing this family (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100342191B1 (ko) | 1999-03-11 | 2002-06-27 | 윤종용 | 미소굴곡에 의한 광섬유 격자 제작장치 및 그 방법 |
| WO2002033464A1 (en) * | 2000-10-18 | 2002-04-25 | Amherst Holding Co. | Low reflection optical fiber terminators |
| EP1249692A1 (fr) * | 2001-04-12 | 2002-10-16 | Fos Sàrl | Dispositif à fibre optique pour la mesure de contraintes |
| US20030121289A1 (en) * | 2002-01-02 | 2003-07-03 | Benda John A. | Long period fiber Bragg gratings written with alternate side IR laser illumination |
| US7184625B2 (en) * | 2003-02-11 | 2007-02-27 | Luxtera, Inc | Optical waveguide grating coupler incorporating reflective optical elements and anti-reflection elements |
| US7062125B2 (en) * | 2003-04-08 | 2006-06-13 | Institut National D'optique | Prismatic reflection optical waveguide device |
| GB0500305D0 (en) | 2005-01-08 | 2005-02-16 | Dunlop Aerospace Ltd | Electrically actuated aircraft brakes |
| WO2007077419A1 (en) * | 2006-01-05 | 2007-07-12 | University Of Southampton | Optical fibre with angled core |
| WO2010030587A2 (en) * | 2008-09-10 | 2010-03-18 | Lake Shore Cryotronics, Inc. | Compact fiber optic sensors and method of making same |
| US9138948B2 (en) * | 2008-09-10 | 2015-09-22 | Kyton, Llc | Suspended and compact fiber optic sensors |
| US9770862B2 (en) | 2008-09-10 | 2017-09-26 | Kyton, Llc | Method of making adhesion between an optical waveguide structure and thermoplastic polymers |
| US8655117B2 (en) | 2011-03-11 | 2014-02-18 | University of Maribor | Optical fiber sensors having long active lengths, systems, and methods |
| US8655123B2 (en) | 2011-03-11 | 2014-02-18 | University of Maribor | In-line optical fiber devices, optical systems, and methods |
| US10716510B2 (en) | 2013-09-17 | 2020-07-21 | Medibotics | Smart clothing with converging/diverging bend or stretch sensors for measuring body motion or configuration |
| US9588582B2 (en) | 2013-09-17 | 2017-03-07 | Medibotics Llc | Motion recognition clothing (TM) with two different sets of tubes spanning a body joint |
| US10602965B2 (en) | 2013-09-17 | 2020-03-31 | Medibotics | Wearable deformable conductive sensors for human motion capture including trans-joint pitch, yaw, and roll |
| US9582072B2 (en) | 2013-09-17 | 2017-02-28 | Medibotics Llc | Motion recognition clothing [TM] with flexible electromagnetic, light, or sonic energy pathways |
| US10321873B2 (en) | 2013-09-17 | 2019-06-18 | Medibotics Llc | Smart clothing for ambulatory human motion capture |
| CN103558663A (zh) * | 2013-11-09 | 2014-02-05 | 哈尔滨工业大学 | S形光子晶体光纤锥传感器及其制备方法 |
| JP6268977B2 (ja) * | 2013-11-25 | 2018-01-31 | 住友電気工業株式会社 | 屈曲光ファイバの製造方法 |
| JP6417710B2 (ja) * | 2014-05-20 | 2018-11-07 | 住友電気工業株式会社 | 屈曲光ファイバ製造方法 |
| CN107123477B (zh) * | 2017-05-17 | 2020-11-03 | 北京恒润生工程科技有限公司 | 基于光纤微弯设计的既有铁路贯通地线防盗系统 |
| US11500152B2 (en) | 2017-11-29 | 2022-11-15 | Cornell University | Elastomeric lightguide coupling for continuous position localization in 1,2, and 3D |
| CN111141432B (zh) * | 2019-12-24 | 2021-08-10 | 中天科技光纤有限公司 | 光纤压力传感器及其测试方法 |
| CN114894225B (zh) * | 2022-07-13 | 2022-09-30 | 安徽省国盛量子科技有限公司 | 基于光纤微弯技术的分布式光纤传感器及制作方法 |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2687673A (en) * | 1949-04-04 | 1954-08-31 | Boone Philip | Textile material having oriented fibers |
| US3779729A (en) * | 1962-03-08 | 1973-12-18 | Bendix Corp | Method of forming composite fiber bundle |
| US3977855A (en) * | 1971-06-11 | 1976-08-31 | American Optical Corporation | Method of making fiber optic device |
| US4208363A (en) * | 1972-11-28 | 1980-06-17 | Izon Corporation | Method of making a plurality of adjacent light pipe elements |
| GB1404375A (en) * | 1973-02-26 | 1975-08-28 | Rank Organisation Ltd | Display devices |
| US4028081A (en) * | 1975-12-11 | 1977-06-07 | Bell Telephone Laboratories, Incorporated | Method for manufacturing helical optical fiber |
| JPS5727211A (en) * | 1980-07-28 | 1982-02-13 | Fujitsu Ltd | Fiber mode scrambler |
| JPS5950004A (ja) * | 1982-09-14 | 1984-03-22 | Nippon Peroxide Co Ltd | 着色過酸化水素溶液 |
| CH660801A5 (fr) * | 1984-12-14 | 1987-06-15 | Maillefer Sa | Procede de fabrication d'un element de cablage a fibre optique, installation pour la mise en oeuvre du procede et element de cablage obtenu par ce procede. |
| US4763272A (en) * | 1987-03-29 | 1988-08-09 | The United States Of America As Represented By The Secretary Of The Navy | Automated and computer controlled precision method of fused elongated optical fiber coupler fabrication |
| US4808204A (en) * | 1987-06-25 | 1989-02-28 | Polysoft Systems Corp. | Method and apparatus for producing bends in optical fibers |
| US4820321A (en) * | 1987-08-13 | 1989-04-11 | American Telephone And Telegraph Company | Method and apparatus for fabricating an expanded beam cylindrically terminated optical fiber taper |
| JPH01173834A (ja) * | 1987-12-28 | 1989-07-10 | Mitsubishi Cable Ind Ltd | 液体検知センサの製造方法 |
| US5163988A (en) * | 1990-04-03 | 1992-11-17 | Fujikura Ltd. | Method of preventing twisting of a fushion-spliced, tube-removed fiber portion in the process of encasing the fiber portion in a casing |
| DE4013831A1 (de) * | 1990-04-30 | 1991-10-31 | Fibronix Sensoren Gmbh | Lichtleiterverzweiger und seine herstellung |
| US5132529A (en) * | 1990-08-23 | 1992-07-21 | The United States Of America As Represented By The United States Department Of Energy | Fiber-optic strain gauge with attached ends and unattached microbend section |
| FR2683053B1 (fr) * | 1991-10-29 | 1994-10-07 | Thomson Csf | Fibre optique et procede de fabrication. |
| US5411566A (en) * | 1994-06-08 | 1995-05-02 | At&T Corp. | Optical fiber spatial mode converter using periodic core deformation |
| US5694497A (en) * | 1995-06-19 | 1997-12-02 | The United States Of America As Represented By The Secretary Of The Navy | Intrinsically self deforming fiber optic microbend pressure and strain sensor |
| US5694512A (en) * | 1996-07-09 | 1997-12-02 | Framatome Connectors Canada Inc. | Compact tunable wavelength independent all-fiber optical attenuator and method of making same |
-
1994
- 1994-03-15 SE SE9400873A patent/SE502553C2/sv not_active IP Right Cessation
-
1995
- 1995-03-15 JP JP52398395A patent/JP3187840B2/ja not_active Expired - Fee Related
- 1995-03-15 WO PCT/SE1995/000265 patent/WO1995025258A1/en active IP Right Grant
- 1995-03-15 US US08/716,219 patent/US6003340A/en not_active Expired - Lifetime
- 1995-03-15 EP EP95913469A patent/EP0750734B1/en not_active Expired - Lifetime
- 1995-03-15 CN CN95192102A patent/CN1060266C/zh not_active Expired - Fee Related
- 1995-03-15 AU AU20895/95A patent/AU2089595A/en not_active Abandoned
- 1995-03-15 DE DE69527051T patent/DE69527051D1/de not_active Expired - Lifetime
-
1996
- 1996-09-13 FI FI963625A patent/FI109490B/sv not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| WO1995025258A1 (en) | 1995-09-21 |
| JP3187840B2 (ja) | 2001-07-16 |
| FI963625A (sv) | 1996-09-13 |
| SE502553C2 (sv) | 1995-11-13 |
| CN1060266C (zh) | 2001-01-03 |
| CN1143999A (zh) | 1997-02-26 |
| FI963625A0 (sv) | 1996-09-13 |
| JPH09510542A (ja) | 1997-10-21 |
| EP0750734A1 (en) | 1997-01-02 |
| AU2089595A (en) | 1995-10-03 |
| EP0750734B1 (en) | 2002-06-12 |
| SE9400873D0 (sv) | 1994-03-15 |
| SE9400873L (sv) | 1995-09-16 |
| US6003340A (en) | 1999-12-21 |
| DE69527051D1 (de) | 2002-07-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| FI109490B (sv) | Fiberoptisk töjningsavkännare samt framställning därav | |
| FI71842B (fi) | Fiberoptisk spaenningssensor | |
| US9810557B2 (en) | Multicore optical fiber apparatus, methods, and applications | |
| US5818982A (en) | Fiber optic sensor based upon buckling of a freely suspended length of fiber | |
| US20070201793A1 (en) | Multi-core optical fiber and method of making and using same | |
| US5627921A (en) | Optical fiber for sensors including holes in cladding | |
| EP1114296B1 (en) | Fiberoptic coupler-sensor and a measurement method | |
| JP2019522791A (ja) | ファイバブラッググレーティングセンサを用いた変位測定装置及びその感度並びに耐久性調節方法 | |
| US9770862B2 (en) | Method of making adhesion between an optical waveguide structure and thermoplastic polymers | |
| Budnicki et al. | All-fiber vector bending sensor based on a multicore fiber with asymmetric air-hole structure | |
| He et al. | Bend sensor based on Mach-Zehnder interferometer using single-mode fiber with helical structure | |
| US20080205815A1 (en) | Micro fiber optical sensor | |
| CN112833928A (zh) | 级联宏弯曲和交替单模-多模光纤结构温度折射率传感器 | |
| Musa et al. | Fiber Mach-Zehnder interferometer based on double cladding fiber for high curvature measurement | |
| US4555175A (en) | Measuring compression of cabled optical fibers | |
| Zhao et al. | Directional bend sensing based on high birefringence dual-core photonic crystal fiber | |
| Sabrina et al. | Macrobending loss analysis of singlemode-multimode-singlemode (sms) optical fiber structures on variation of macro bend and multimode | |
| JP2009063356A (ja) | 光ファイバセンサケーブル | |
| CN117073866B (zh) | 一种基于七芯光纤和蝴蝶结型的温度传感器及制备方法 | |
| Fu et al. | A directional curvature sensor using excentric heterogeneous fiber filled PDMS with spherical structure | |
| KR20190108982A (ko) | 온도 및 스트레인의 동시 측정을 위한 광섬유 복합 공진 구조체 | |
| CN111766663B (zh) | 光纤尾端反射消除方法 | |
| Arif et al. | Effect of Single-Mode and Hetero-core Macrobend Fiber Optics | |
| Park et al. | Sensing characteristics of long-period fiber gratings in photonic crystal fiber imprinted by CO2 laser | |
| Rego et al. | Origin of coupling to antisymmetric modes in arc-induced long-period fiber gratings |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MA | Patent expired |