WO2006125773A2 - Verfahren zum herstellen eines bandes mit mehreren parallel verlaufenden lichtleitern - Google Patents
Verfahren zum herstellen eines bandes mit mehreren parallel verlaufenden lichtleitern Download PDFInfo
- Publication number
- WO2006125773A2 WO2006125773A2 PCT/EP2006/062512 EP2006062512W WO2006125773A2 WO 2006125773 A2 WO2006125773 A2 WO 2006125773A2 EP 2006062512 W EP2006062512 W EP 2006062512W WO 2006125773 A2 WO2006125773 A2 WO 2006125773A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- band
- light
- optical
- intensity
- measuring light
- Prior art date
Links
Classifications
-
- 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
- G02B6/264—Optical coupling means with optical elements between opposed fibre ends which perform a function other than beam splitting
- G02B6/266—Optical coupling means with optical elements between opposed fibre ends which perform a function other than beam splitting the optical element being an attenuator
-
- 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
-
- 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
- G02B6/02052—Optical fibres with cladding with or without a coating comprising optical elements other than gratings, e.g. filters
-
- 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
- G02B6/2852—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 tapping light guides arranged sidewardly, e.g. in a non-parallel relationship with respect to the bus light guides (light extraction or launching through cladding, with or without surface discontinuities, bent structures)
Definitions
- the invention relates to a method for producing a strip with a plurality of parallel optical fibers, wherein the surface of the optical fibers in sections so be ⁇ acts is that increases the optical attenuation of the optical fibers in the treated sections.
- the surface of the light guide used in the band can be changed, for example, by hot embossing, wherein, for example, three of these light conductors can be joined together to form a band. If the surface-treated sections of the optical waveguides are oriented differently with respect to the respective cross-section of the optical waveguides, then the band's curvature can be determined in three-dimensional space due to the bending-dependent attenuation in the optical waveguides. For this purpose, the surface-treated areas of the respective light guides are used, since here the bending-dependent change of the damping occurs particularly strongly. The change in the intensity of light signals sent through the optical fibers can be determined and evaluated with regard to a change in the attenuation of the optical fibers.
- a method is specified in which a light guide can be fed via a roller to any desired process.
- the process may be a manufacturing process for the further processing of the light guide or, for example, a process in which the Optical fiber is laid on site.
- the light ⁇ conductor is inserted, a sensor section in the light guide and fed a measurement light into the light guide disposed in the rolling before rolling.
- the optical response reflected by the sensor section of the optical waveguide is read out again at the point of infeed of the measuring light and evaluated with regard to the ref ⁇ sating statements of a quality assurance.
- the object of the invention is to provide a method for producing a strip with a plurality of parallel optical fibers, in which a surface treatment can be carried out in a simple manner such that a comparatively uniform optical behavior of the strips produced can be produced.
- ⁇ he invention characterized in that during the treatment of the surface of the light guide, a measuring operation is performed, in which the spatial course of the band is specified at least in the treated sections, at one end of the tape in the treated light guide measuring light is coupled with each of the same intensity and the decoupled measuring light is received at the other end of the tape, wherein a Inten is ⁇ sticiansband defined for the intensity of the coupled-measuring light and for the case that the intensity of the coupled-measuring light half of a light guide except ⁇ Intensticiansbandes, the treatment is continued until the measuring light is in the intensity band, or the treatment is stopped and the tape is discarded, if an intensity of the measuring light in the intensity band can not be produced.
- the tape can be mounted on a flat surface, so that during the optical inspection, the tape is free of curvature.
- the belt can also be guided over a roller while the optical inspection so that the tape while checking with a constant curvature radius ⁇ present.
- a quality control of the surface treatment of light guides in a strip can advantageously be carried out promptly with the production. Any errors can be detected early and corrected if necessary.
- an initial separation of scrap is possible, so that in this case be omitted wei ⁇ tere process steps for further processing of the light conductor and the associated ⁇ Vietnamesesauf ⁇ wall can be saved.
- the measuring step takes place during the treatment of the surface of the light guides. It is possible to detect manufacturing defects during their Ent ⁇ stehung and therefore advantageous at the earliest opportunity to make a correction. In particular It is also possible to determine in the during the surface treatment of a light guide a possible damage of adjacent light guide, since in this case, the Dämp ⁇ tion of just unprocessed light guides would increase. The faulty component could in this case be cut out ⁇ .
- the band is cut to product-specific lengths prior to treatment. Described here is advantageously possible by an optical sub ⁇ already investigation the damping behavior of the untreated optical fibers in the ribbon with the product-specific length to determine, for any material defects can be seen in the light guides. In the subsequent surface treatment of the light guide can be moved in the procedure already described.
- vorgese ⁇ hen is that the band for the surface treatment with one end of a roll unwound, the roll located on the other end of the band for a coupling or uncoupling of the measuring light is freely accessible.
- This can be achieved, for example, in that the tape end located on the roller is guided into a central cavity of the roller and in this cavity and the optical
- Transmitter for coupling or the optical receiver for decoupling the measuring light is housed.
- the light guide can then be withdrawn from the supply roll, wherein the untreated light guide in the band has a low optical attenuation in relation to the introduced by the surface treatment ⁇ sections. Therefore, the change in the damping behavior due to the surface treatment can also be determined when cutting the tape to product-specific lengths takes place only after the surface treatment of the light guide located in the band.
- a correction factor dependent on the length of the tape on the roll is taken into account in the evaluation of the recorded measurement light.
- the correction factor can take into account the degree of damping of the strip on the roll and therefore depends on the length still available on the roll.
- the measurement result is corrected by this factor, which has the advantage that the measurement results are directly comparable with each other, irrespective of the band still remaining on the roll during production of the product-specific strip parts to be cut.
- the optical end faces of the light guides are processed before the measuring step. This can improve the quality of transmission at the ends of the belt. Furthermore, the measurement results for the bands are advantageously comparable with one another, since the scattering of the measured values is reduced on account of differently high losses at the ends of the light guides.
- the improvement in the transmission properties of the optical end faces will continue to be advantageous in general also benefit the application for which the bands are provided. This may be, for example, optical sensor tapes, as they are installed in pedestrian protection systems in the bumpers of motor vehicles. Finally, it is advantageous to use a sensor area which is large enough to record the measuring light of all optical fibers simultaneously for taking up the measuring light.
- This sensor surface can be, for example, a CCD sensor or a comparable optical area sensor, which can preferably be embodied as part of a digital camera.
- the use of the sensor surface ensures that the measuring light coupled out of the light guides can be recorded simultaneously and thus directly comparable.
- an intensity distribution of the measurement light can be represented by a suitable evaluation of the measurement image generated on the sensor.
- FIG. 1 shows a structure for carrying out an embodiment of the method according to the invention, in which the tape is cut to length before the treatment
- FIG. 2 shows, by way of example, the intensity distribution of the measurement light taken with a camera according to FIG. 1 and FIG. 3 shows a structure for carrying out a further exemplary embodiment of the method according to the invention, in which the band is unrolled from a roll.
- a band 11 is partially broken away, which has already been cut to length with respect to the intended use and contains four light guides 12 which are cast into the material of the band 11.
- the tape lies in a carrier body 13, whereby its course is fixed.
- the carrier body 13 is designed so that the band 11 exactly fits into a groove provided for this purpose and thus is present without bending.
- a surface treatment of the optical fibers 12 is performed in each case in sections 14 by a laser, not shown, which changes the surface of the optical fibers 12 such that the attenuation of the optical fibers as such or a damping dependence of the bending of the optical fiber is increased in the sections 14.
- the material of the band 11 is penetrated by the laser and destroyed depending on the condition, so that the injuries of the band subsequently have to be closed by a filling material (not shown).
- a light source 15 such as a light emitting diode or a laser diode
- a refractive optical 16 measuring light in the light guide 12 and read out the decoupled at the opposite end of the tape light by means of a CCD camera 17.
- the measurement light passes since ⁇ each at the polished end surfaces 18 (can be seen only on the output side) of the light conductors which are polished to improve transmission.
- a filter (not shown) may additionally be provided which separates the measuring light from unwanted light components (for example ambient light).
- FIG. 2 schematically illustrates an evaluation of the image taken with the CCD camera 17 according to FIG. 1 of the light coupled out of the band 11 (distribution of the light intensity I over a spatial variable x).
- the four In ⁇ tensitatsmaxima 19 characterizing the light intensity of light transmitted through the optical fiber 12 light. These are located in an intensity band b, which was defined for a specific application, so that a correlation is only necessary yaw of the signal generated by the surface treatment of the light guide 12 damping behavior when the Intensitäsmaxima 19 are DEFINE ⁇ th intensity range outside the b through the belt.
- a representation according to FIG. 2 is obtained when the image generated by the CCD camera 17 according to FIG. 1 is evaluated by software technology.
- the semi-finished product of the belt 11 is wound on a supply roll before ⁇ 20th
- the roller located on the end 21 a of the tape is not the roller cylinder, but is hineinge ⁇ into a cylindrical interior 22 of the role.
- the light source 15 is mounted, so that regardless of the angular position of the supply roll 20, a coupling of the light in the light guide (not shown) can take place.
- the tape 11 is unwound with the free end 21 b of the supply roll 20 and passed over a production roller 23.
- the light guides are treated, for example, in section 14 (shown exem ⁇ plarisch in Figure 3).
- the course of the treatment process can be checked at the same time by 15 measuring light is fed into the tape 11 by means of the light source and is received the latestkop from the belt 11 ⁇ pelte light by means of a stationary on the production roller bearings CCD camera 17th
- the required damping behavior and, on reaching the product-specific tape length of the tape produced part can be cut to length by means of a geeig ⁇ Neten device 25th
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Optical Integrated Circuits (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008512824A JP4637954B2 (ja) | 2005-05-27 | 2006-05-23 | 複数の平行に延びる光導体を有する帯状体の製造方法 |
CA2609448A CA2609448C (en) | 2005-05-27 | 2006-05-23 | Method for production of a band with several parallel optical fibers |
US11/921,074 US8075809B2 (en) | 2005-05-27 | 2006-05-23 | Method for production of a band with several parallel optical fibers |
EP06755282A EP1886097A2 (de) | 2005-05-27 | 2006-05-23 | Verfahren zum herstellen eines bandes mit mehreren parallel verlaufenden lichtleitern |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005025121A DE102005025121B3 (de) | 2005-05-27 | 2005-05-27 | Verfahren zum Herstellen eines Bandes mit mehreren parallel verlaufenden Lichtleitern |
DE102005025121.8 | 2005-05-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2006125773A2 true WO2006125773A2 (de) | 2006-11-30 |
WO2006125773A3 WO2006125773A3 (de) | 2007-02-22 |
Family
ID=36749546
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2006/062512 WO2006125773A2 (de) | 2005-05-27 | 2006-05-23 | Verfahren zum herstellen eines bandes mit mehreren parallel verlaufenden lichtleitern |
Country Status (6)
Country | Link |
---|---|
US (1) | US8075809B2 (de) |
EP (1) | EP1886097A2 (de) |
JP (1) | JP4637954B2 (de) |
CA (1) | CA2609448C (de) |
DE (1) | DE102005025121B3 (de) |
WO (1) | WO2006125773A2 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105758310B (zh) * | 2016-03-31 | 2018-11-16 | 浙江工商大学 | 一种利用光纤组检测货架横梁安装孔是否合格的装置 |
CN105865330B (zh) * | 2016-03-31 | 2018-11-16 | 浙江工商大学 | 一种根据凸透镜原理检测货架横梁安装孔的装置 |
UY38110A (es) * | 2018-02-27 | 2019-10-01 | Ctc Global Corp | Sistemas, métodos y herramientas para la evaluación de miembros de refuerzo de materiales compuestos |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5633494A (en) | 1991-07-31 | 1997-05-27 | Danisch; Lee | Fiber optic bending and positioning sensor with selected curved light emission surfaces |
WO2006032654A2 (de) | 2004-09-23 | 2006-03-30 | Siemens Aktiengesellschaft | Lichtleiter mit einer strukturierten oberfläche und verfahren zu dessen herstellung |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2073162C (en) * | 1991-07-31 | 1999-06-29 | Lee A. Danisch | Fiber optic bending and positioning sensor |
JPH08511343A (ja) * | 1993-06-10 | 1996-11-26 | エイ ダニシュ,リー | ファイバオプティック屈曲及び位置決めセンサ |
US6077462A (en) * | 1998-02-20 | 2000-06-20 | 3M Innovative Properties Company | Method and apparatus for seamless microreplication using an expandable mold |
US6314214B1 (en) * | 1999-09-28 | 2001-11-06 | Corning Incorporated | System and method for measuring stress during processing of an optical fiber |
US6522808B1 (en) * | 2000-01-15 | 2003-02-18 | Corning Incorporated | System and method for writing fiber gratings and other components |
JP2003270094A (ja) * | 2002-03-14 | 2003-09-25 | Sumitomo Electric Ind Ltd | 光ファイバの特性測定方法 |
US6816662B2 (en) * | 2002-09-19 | 2004-11-09 | 3M Innovative Properties Company | Article for cleaving and polishing optical fiber ends |
US7366378B2 (en) * | 2004-10-29 | 2008-04-29 | Matsushita Electric Industrial Co., Ltd. | Ultrafast laser machining system and method for forming diffractive structures in optical fibers |
-
2005
- 2005-05-27 DE DE102005025121A patent/DE102005025121B3/de not_active Expired - Fee Related
-
2006
- 2006-05-23 WO PCT/EP2006/062512 patent/WO2006125773A2/de not_active Application Discontinuation
- 2006-05-23 EP EP06755282A patent/EP1886097A2/de not_active Withdrawn
- 2006-05-23 US US11/921,074 patent/US8075809B2/en not_active Expired - Fee Related
- 2006-05-23 JP JP2008512824A patent/JP4637954B2/ja not_active Expired - Fee Related
- 2006-05-23 CA CA2609448A patent/CA2609448C/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5633494A (en) | 1991-07-31 | 1997-05-27 | Danisch; Lee | Fiber optic bending and positioning sensor with selected curved light emission surfaces |
WO2006032654A2 (de) | 2004-09-23 | 2006-03-30 | Siemens Aktiengesellschaft | Lichtleiter mit einer strukturierten oberfläche und verfahren zu dessen herstellung |
Non-Patent Citations (1)
Title |
---|
See also references of EP1886097A2 |
Also Published As
Publication number | Publication date |
---|---|
JP4637954B2 (ja) | 2011-02-23 |
JP2008546008A (ja) | 2008-12-18 |
US20090230578A1 (en) | 2009-09-17 |
DE102005025121B3 (de) | 2006-10-26 |
CA2609448C (en) | 2012-06-26 |
US8075809B2 (en) | 2011-12-13 |
WO2006125773A3 (de) | 2007-02-22 |
EP1886097A2 (de) | 2008-02-13 |
CA2609448A1 (en) | 2006-11-30 |
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