CN1648702A - Optical fiber sensitive element metallized packaging structure and its method - Google Patents
Optical fiber sensitive element metallized packaging structure and its method Download PDFInfo
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- CN1648702A CN1648702A CNA2004100613789A CN200410061378A CN1648702A CN 1648702 A CN1648702 A CN 1648702A CN A2004100613789 A CNA2004100613789 A CN A2004100613789A CN 200410061378 A CN200410061378 A CN 200410061378A CN 1648702 A CN1648702 A CN 1648702A
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Abstract
The present invention provided a no-glue packing structure and method and for completing the metallized packing structure of sensitive fiber element via plating metal film and welding. The outer coating of hydrogen carrying fiber is eliminated and grating of specific wavelength is written to naked fiber position with quasi-molecular laser; the fiber grating is then surface cleaned, activated and plated first with metal nickel and then with metal gold; and the fiber grating is penetrated into metal tube before fixed on operation table or fixed directly on metal sheet, applied with pre-stress, and heated to weld onto metal tube or metal sheet. The sensor of the present invention has excellent linearity and repeatability.
Description
Technical Field
The invention relates to an optical fiber sensitive element, in particular to a metalized packaging structure of an optical fiber grating and a packaging method thereof.
Background
The fiber grating is a fiber sensing element, and is often applied to the fields of fiber sensing and fiber communication. Due to the sensitivity and fragility of the element, the packaging technology of the element becomes a key technology in engineering application. The packaging technology commonly used at present is as follows: and packaging the manufactured fiber grating by a secondary coating machine and then packaging the fiber grating on a metal tube or a metal sheet by using special resin adhesive.
The existing packaging technology has the following defects: firstly, the resin adhesive belongs to organic matters, is easy to age and decompose and is not beneficial to long-term use in severe environment; secondly, when the fiber grating is applied to the sensing field, the outer cladding of the optical fiber and the resin colloid generate redundancy in measurement, and the linearity and the repeatability of the measurement are affected.
Disclosure of Invention
The invention aims to provide a colloidization-free packaging structure and a packaging method, and the optical fiber sensitive element metalized packaging structure is completed by using a metal coating and welding method. The sensor with the structure of the invention has good linearity and repeatability.
The invention relates to a metalized packaging structure of an optical fiber sensitive element, which mainly comprises the optical fiber sensitive element (1) and a metal tube or a metal sheet (2), and is characterized in that the surface of the optical fiber sensitive element is provided with a metal coating (5), and a metal welding spot (3) is used for welding the optical fiber sensitive element (1) and the metal tube or the metal sheet (2) together.
The invention relates to a metallization packaging method of an optical fiber sensitive element, which is characterized by comprising the following steps:
removing the outer cladding layer (6) of the hydrogen-carrying optical fiber, and writing the grating (1) with a specific wavelength in the position of the bare optical fiber (4) by using an excimer laser; after surface cleaning and activating treatment are carried out on the fiber bragg grating, firstly plating nickel metal and then plating gold metal; the fiber grating is penetrated into the metal tube and fixed on the operation table respectively, or the fiber grating is directly fixed on the metal sheet; prestress is applied to the fiber bragg grating, and then the fiber bragg grating (1) and the metal pipe or the metal sheet (3) are heated and welded.
The metalized packaging structure of the optical fiber sensitive element is characterized in that the optical fiber sensitive element (1) is an optical fiber grating, the metal coating (5) is provided with two layers, the inner layer is nickel, the outer layer is gold, and the metal welding spots (3) are positioned on two sides of the optical fiber sensitive element.
The invention adopts the full-metallization packaging technology, avoids the problems of aging and redundancy caused by using resin glue, and ensures that the optical fiber sensitive element has good linear characteristic and repeatability as a sensor.
Drawings
FIG. 1 shows the structure of the metallized package of the optical fiber sensor
FIG.2 is a flow chart of a method for metalizing and packaging an optical fiber sensing element
Detailed Description
As shown in figure 1, the invention relates to a metalized packaging structure of an optical fiber sensitive element, which mainly comprises the optical fiber sensitive element (1) and a metal tube or a metal sheet (2), and is characterized in that the surface of the optical fiber sensitive element is provided with a metal coating (5) and a metal welding spot (3) is used for welding the optical fiber sensitive element (1) and the metal tube or the metal sheet (2) together.
The implementation steps are shown in figure 2 as follows: the outer cladding (6) of the hydrogen-carrying fiber is removed and a grating (1) of a specific wavelength is written at the position of the bare fiber (4) by an excimer laser.
Oil removal: wiping the surface of the optical fiber with alcohol cotton ball several times, and then wiping the surface with less than 100gL-1Soaking in NaOH solution for 10min, taking out, and washing with deionized water.
Coarsening: with a composition containing F-Or H2SiF6The strong acid solution weakly corrodes the surface of the optical fiber to obtainAnd coarsening to a certain degree. The roughening solution is HF and H2SiF6∶H2O is 1: 2 (volume ratio), the coarsening time is preferably 10min, and the deionized water is taken out for washing.
And (3) heat treatment: the coarsened water film on the surface of the optical fiber seriously hinders the adsorption of active catalytic particles on the surface of the optical fiber, so the optical fiber needs to be subjected to heat treatment before sensitization, and the heat treatment system is as follows: keeping the temperature at 120 ℃ for 10 min.
Sensitization: immersing the heat-treated optical fiber in a sensitizing solution for sensitizing the surface of the optical fiber to adsorb a layer of easily-oxidizable substance (such as SnCl)2) By means of which the electrodes can be connectedMetal ions with high potential (e.g. Pd)2+) Reducing to metal atoms. 5g of SnCl2Dissolving in 5ml concentrated hydrochloric acid, and diluting to specified volume to avoid SnCl2A colloidal precipitate formed in the aqueous solution.
And (3) activation: soaking the sensitized optical fiber in PdCl2In the solution for a certain time to make the bivalent Sn adsorbed on the surface of the optical fiber2+And activating solution PdCl2Divalent Pd in (1)2+Reacting to form a noble metal crystal nucleus Pd with catalytic activity required by electroless nickel plating, wherein the reaction formula is as follows:
active Pd atoms generated by the reaction are adsorbed on the surface of the quartz optical fiber and become a catalytic center of the chemical nickel plating reaction, so that the chemical nickel plating is smoothly carried out.
And (3) heat treatment: in order to improve the bonding force between the active Pd atoms and the surface of the optical fiber, the optical fiber after activation treatment should be heat-treated at 120 ℃ for 10 min.
Firstly plating nickel metal on the gold-plated metal; respectively preparing mixed solution of nickel sulfate, sodium hypophosphite, lactic acid, sodium carbonate, ammonium chloride and saccharin, heating to a certain temperature, immersing the quartz optical fiber after treatment,and taking out after a certain time.
The fiber grating is penetrated into the metal tube and fixed on the operation table respectively, or the fiber grating is directly fixed on the metal sheet; prestress is applied to the fiber grating, and then the fiber grating (1) and the metal tube or the metal sheet (3) are heated and welded.
Claims (5)
1. A metallization packaging structure of an optical fiber sensitive element mainly comprises the optical fiber sensitive element (1) and a metal tube or a metal sheet (2), and is characterized in that a metal coating (5) is arranged on the surface of the optical fiber sensitive element, and a metal welding spot (3) is arranged to weld the optical fiber sensitive element (1) and the metal tube or the metal sheet (2) together.
2. The method for metallized packaging of a fiber optic sensor as claimed in claim 1, wherein:
removing the outer cladding layer (6) of the hydrogen-carrying optical fiber, and writing the grating (1) with a specific wavelength in the position of the bare optical fiber (4) by using an excimer laser;
after surface cleaning and activating treatment are carried out on the fiber bragg grating, firstly plating nickel metal on the fiber bragg grating;
the fiber grating is penetrated into the metal tube and fixed on the operation table respectively, or the fiber grating is directly fixed on the metal sheet;
prestress is applied to the fiber bragg grating, and then the fiber bragg grating (1) and the metal pipe or the metal sheet (3) are heated and welded.
3. The metallized package structure of opticalfiber sensor according to claim 1, wherein the optical fiber sensor (1) is a fiber grating.
4. The optical fiber sensing element metalized package structure as recited in claim 1, wherein the metal plating layer (5) has two layers, an inner layer is nickel, and an outer layer is gold.
5. The optical fiber sensing element metalized package structure as recited in claim 1, wherein the metal pads (3) are located at both sides of the optical fiber sensing element portion.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2004100613789A CN100335928C (en) | 2004-12-17 | 2004-12-17 | Optical fiber sensitive element metallized packaging structure and its method |
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| CNB2004100613789A CN100335928C (en) | 2004-12-17 | 2004-12-17 | Optical fiber sensitive element metallized packaging structure and its method |
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| CN1648702A true CN1648702A (en) | 2005-08-03 |
| CN100335928C CN100335928C (en) | 2007-09-05 |
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Cited By (14)
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| CN101915594A (en) * | 2010-08-10 | 2010-12-15 | 重庆大学 | Glue-free connection method for optical fiber stress/strain sensing devices |
| CN102601344A (en) * | 2012-03-20 | 2012-07-25 | 沈阳航空航天大学 | Method for manufacturing Al-Sn alloy-based nickel-plated high-temperature-resistant fiber grating sensor |
| CN102788603A (en) * | 2012-07-27 | 2012-11-21 | 华东理工大学 | All-metal packaged high-temperature resistant fiber bragg grating sensor and manufacture method thereof |
| CN102853856A (en) * | 2012-07-24 | 2013-01-02 | 中国电子科技集团公司第八研究所 | Method for eliminating chirping phenomenon of fiber grating sensor |
| CN103779765A (en) * | 2012-10-24 | 2014-05-07 | 清华大学 | Optic fiber output end encapsulation module of optic fiber laser |
| CN104279974A (en) * | 2014-09-28 | 2015-01-14 | 中国船舶重工集团公司第七一九研究所 | Split type optic fiber strain sensor assembly |
| CN105241573A (en) * | 2015-10-27 | 2016-01-13 | 武汉理工大学 | Laser-welding fiber grating surface temperature sensor and packaging method thereof |
| CN105583484A (en) * | 2015-12-16 | 2016-05-18 | 北京遥测技术研究所 | Optical fiber sensor glue-free packaging device and method |
| CN106482657A (en) * | 2016-10-10 | 2017-03-08 | 武汉理工大学 | Fiber grating dynamic strain sensor-packaging structure and method |
| CN106482760A (en) * | 2015-10-14 | 2017-03-08 | 北京信息科技大学 | A kind of system of all-metal packaged fiber grating strain transducer |
| CN106546355A (en) * | 2016-11-03 | 2017-03-29 | 北京信息科技大学 | A kind of low temperature resistant fiber grating temperature sensor of all-metal and its method for packing |
| CN107620064A (en) * | 2017-09-26 | 2018-01-23 | 山东大学 | A kind of fibre optical sensor metallization packaged method and technique |
| CN109752795A (en) * | 2019-01-15 | 2019-05-14 | 无锡必创传感科技有限公司 | A kind of metallized optical fibre grating and preparation method thereof and sensor |
| CN114325966A (en) * | 2021-12-29 | 2022-04-12 | 中国电子科技集团公司第四十四研究所 | Binary array optical fiber coupling structure of balanced photoelectric detector and manufacturing method |
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| US6181851B1 (en) * | 1997-05-29 | 2001-01-30 | E-Tek Dynamics, Inc. | Temperature-compensated optical fiber package |
| TW418332B (en) * | 1999-06-14 | 2001-01-11 | Ind Tech Res Inst | Optical fiber grating package |
| CN1316660A (en) * | 2001-03-19 | 2001-10-10 | 上海鹰泰机电有限公司 | Vacuum package technology of optical-fibre raster filter and its device |
| CN2550719Y (en) * | 2002-05-30 | 2003-05-14 | 欧进萍 | Optical fiber and grating sheet type package strainometer |
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2004
- 2004-12-17 CN CNB2004100613789A patent/CN100335928C/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915594B (en) * | 2010-08-10 | 2011-11-09 | 重庆大学 | Glue-free connection method for optical fiber stress/strain sensing devices |
| CN101915594A (en) * | 2010-08-10 | 2010-12-15 | 重庆大学 | Glue-free connection method for optical fiber stress/strain sensing devices |
| CN102601344B (en) * | 2012-03-20 | 2014-01-01 | 沈阳航空航天大学 | Method for manufacturing Al-Sn alloy-based nickel-plated high-temperature-resistant fiber grating sensor |
| CN102601344A (en) * | 2012-03-20 | 2012-07-25 | 沈阳航空航天大学 | Method for manufacturing Al-Sn alloy-based nickel-plated high-temperature-resistant fiber grating sensor |
| CN102853856A (en) * | 2012-07-24 | 2013-01-02 | 中国电子科技集团公司第八研究所 | Method for eliminating chirping phenomenon of fiber grating sensor |
| CN102788603B (en) * | 2012-07-27 | 2016-02-24 | 华东理工大学 | The high-temperature resistant optical fiber grating sensor of metal package and manufacture method thereof |
| WO2014015586A1 (en) * | 2012-07-27 | 2014-01-30 | 华东理工大学 | All-metal-packaged high-temperature-resistant optical-fibre grating sensor and manufacturing method therefor |
| CN102788603A (en) * | 2012-07-27 | 2012-11-21 | 华东理工大学 | All-metal packaged high-temperature resistant fiber bragg grating sensor and manufacture method thereof |
| US9551596B2 (en) | 2012-07-27 | 2017-01-24 | East China University Of Science And Technology | High-temperature-resistant metal-packaged fiber bragg grating sensor and manufacturing method therefor |
| CN103779765B (en) * | 2012-10-24 | 2016-08-03 | 清华大学 | A kind of optical fiber laser fiber-optic output package module |
| CN103779765A (en) * | 2012-10-24 | 2014-05-07 | 清华大学 | Optic fiber output end encapsulation module of optic fiber laser |
| CN104279974A (en) * | 2014-09-28 | 2015-01-14 | 中国船舶重工集团公司第七一九研究所 | Split type optic fiber strain sensor assembly |
| CN106482760B (en) * | 2015-10-14 | 2018-09-21 | 北京信息科技大学 | A kind of system of all-metal packaged fiber grating strain transducer |
| CN106482760A (en) * | 2015-10-14 | 2017-03-08 | 北京信息科技大学 | A kind of system of all-metal packaged fiber grating strain transducer |
| CN105241573A (en) * | 2015-10-27 | 2016-01-13 | 武汉理工大学 | Laser-welding fiber grating surface temperature sensor and packaging method thereof |
| CN105583484A (en) * | 2015-12-16 | 2016-05-18 | 北京遥测技术研究所 | Optical fiber sensor glue-free packaging device and method |
| CN106482657A (en) * | 2016-10-10 | 2017-03-08 | 武汉理工大学 | Fiber grating dynamic strain sensor-packaging structure and method |
| CN106546355A (en) * | 2016-11-03 | 2017-03-29 | 北京信息科技大学 | A kind of low temperature resistant fiber grating temperature sensor of all-metal and its method for packing |
| CN106546355B (en) * | 2016-11-03 | 2019-04-30 | 北京信息科技大学 | A kind of the low temperature resistant fiber grating temperature sensor and its packaging method of all-metal |
| CN107620064A (en) * | 2017-09-26 | 2018-01-23 | 山东大学 | A kind of fibre optical sensor metallization packaged method and technique |
| CN109752795A (en) * | 2019-01-15 | 2019-05-14 | 无锡必创传感科技有限公司 | A kind of metallized optical fibre grating and preparation method thereof and sensor |
| CN114325966A (en) * | 2021-12-29 | 2022-04-12 | 中国电子科技集团公司第四十四研究所 | Binary array optical fiber coupling structure of balanced photoelectric detector and manufacturing method |
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Owner name: WUHAN PHYSICS AND ENGINEERING CONQUER CO., LTD. Free format text: FORMER OWNER: WUHAN UNIV. OF SCIENCE AND ENGINEERING Effective date: 20091218 |
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Effective date of registration: 20091218 Address after: Hubei city of Wuhan province Wuchang Luoshi Road No. 122 Patentee after: Wuhan Ligong Guangke Co., Ltd. Address before: Hubei city of Wuhan province Wuchang Luoshi Road No. 122 Patentee before: Wuhan University of Technology |