WO2001071399A2 - Verfahren und vorrichtung zum positionieren eines lichtwellenleiters in einer ferrule - Google Patents
Verfahren und vorrichtung zum positionieren eines lichtwellenleiters in einer ferrule Download PDFInfo
- Publication number
- WO2001071399A2 WO2001071399A2 PCT/CH2001/000161 CH0100161W WO0171399A2 WO 2001071399 A2 WO2001071399 A2 WO 2001071399A2 CH 0100161 W CH0100161 W CH 0100161W WO 0171399 A2 WO0171399 A2 WO 0171399A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ferrule
- optical waveguide
- positioning pin
- positioning
- stop
- 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
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
- G02B6/3834—Means for centering or aligning the light guide within the ferrule
- G02B6/3843—Means for centering or aligning the light guide within the ferrule with auxiliary facilities for movably aligning or adjusting the fibre within its ferrule, e.g. measuring position or eccentricity
-
- 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
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
- G02B6/3834—Means for centering or aligning the light guide within the ferrule
-
- 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
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
- G02B6/3855—Details of mounting fibres in ferrules; Assembly methods; Manufacture characterised by the method of anchoring or fixing the fibre within the ferrule
Definitions
- the invention relates to a method for positioning an optical waveguide in a ferrule and a device for positioning an optical waveguide in a ferrule according to the preambles of the independent claims.
- an optical fiber is usually stripped at one end, which means that the outer protective layer is removed.
- the free end is then inserted into a holder or ferrule, to the extent that it looks out of the ferrule on the other side.
- the ferrule is then attached by gluing or crimping. Now one more step has to be done.
- the free end of the conductor is now revised and ground.
- the object of the invention is to improve the process of inserting an optical waveguide into a ferrule and its positioning in the ferrule so that subsequent processing can be avoided after the optical waveguide has been fixed in the ferrule.
- FIG. 1 shows a positioning unit according to the invention in connection with a
- Fixing device when used with a plug ferrule in longitudinal section
- Figure 3 shows the same positioning unit when used with a socket ferrule
- FIG. 4 ditto with the optical fiber positioned;
- Figure 5 shows a first variant of the head of the positioning pin;
- Figure 6 shows a second variant of the head of the positioning pin.
- optical fiber end is of central importance when attaching and fixing an optical fiber 1 in a ferrule. If you want to machine the end of it ideally, i.e. milling and / or grinding, this is best done without the ferrule in an optimized grinding device. However, this means that the optical waveguide 1 can only then be inserted into the ferrule 2 and fastened there. Since the optical waveguide 1 already has a machined contact end, it must be able to be positioned exactly in the ferrule, connector 21 or sleeve ferrule 22, so that when connecting two optical waveguides, a perfect conductor connection is achieved, the conductor ends not touching one another.
- the positioning of the optical waveguide 1 with its finished end is carried out according to the new method.
- the jacket around the fiber optic cable 1 is stripped to a certain extent beforehand.
- the optical conductor itself remains unaffected in the thin protective jacket. Its end is also finished beforehand by milling and / or grinding.
- the end of an optical waveguide 1 is inserted into a ferrule 2 and prepositioned such that the end of the optical waveguide 1 projects slightly beyond the free end of the ferrule 2.
- ferrules 2 with optical waveguide 1 are inserted into a fixing shell 3 and held therein.
- the optical waveguide 1 also remains pre-positioned in the ferrule 2 itself, as mentioned. In this position, it is fixed so strongly with suitable fixing agents that it cannot move without external influence.
- the assembled fixing shell 3 is inserted into the fixing device 5, 5 'in the crimping or gluing device.
- the ferrule 2 is brought into abutment at a stop 41 on an adjusting device 4.
- a positioning pin 42 is pushed against the end of the optical waveguide 1 in the ferrule 2.
- the positioning pin 42 pushes the end of the optical waveguide 1 back into a predeterminable end position.
- the end of the optical waveguide 1 in the area of the ferrule 2 is now positioned and the optical waveguide 1 is now attached to or in the ferrule 2 by means of the crimping 5, 5 'clamping or adhesive device.
- a ferrule 2 in the form of a plug 21 and a sleeve 22 is required. Both types of ferrules 2 can be inserted into the fixing shell 3.
- Such a fixing shell 3 basically forms a sleeve around the ferrule 2. It projects beyond the ferrule 2 on the side on which the optical waveguide 1 is inserted to a certain extent.
- the fixing means 32 for easy holding of the optical waveguide 1 in the ferrule 2 are arranged in this area.
- the fixing means 32 comprise, for example, one or more small, radially arranged clamping jaws 321, which are loaded from the outside by means of a spring and are therefore pressed slightly against the insulation layer 11 of the optical waveguide 1.
- the pressure of the spring load is set such that the optical waveguide 1 is held straight and cannot shift by itself. It is selected so that when adjusting the optical waveguide 1 it can still be pushed backwards by a positioning pin 42, after which it remains held.
- Other possibilities for the fixing means 32 are also provided.
- Another example consists of one or more clip springs inserted from behind into a longitudinal groove or a transverse spring clip, which also generates enough static friction to fulfill the function.
- the fixing shell 3 has at least one lateral opening 33, 34 in the region of the ferrule receptacle. This at least one lateral opening 33, 34 is required for actuating the crimping 5 or gluing device 5 '.
- the crimping or gluing process is normally carried out through these openings.
- the crimping dies 51 pierce these openings and thus act on the ferrule from the outside.
- the gluing process as an alternative to crimping also takes place through such an opening.
- the adhesive for connecting the insulation sleeve and ferrule is applied through this opening. The connection is analogous by means of the known lasers 52.
- the insulation sheath is welded to the ferrule in that the location is machined with a laser beam through the opening 34 in the fixing shell.
- a spring clip can also be inserted into one or more recesses in the ferrule, which also generates enough static friction to fulfill the function.
- the adjusting device 4 consists of a stop plate 41, in which a positioning pin 42 is inserted so as to be longitudinally movable.
- the stop plate 41 forms a stop at which the free end of the equipped ferrule 2 (plug 21 or sleeve ferrule 22) can be brought into stop.
- the positioning pin 42 pushes the end of the optical waveguide 1 back into the ferrule 2 by a predetermined amount. This dimension can be predetermined by the length of the positioning pin 42 or it can be predetermined and, if necessary, even controlled by selecting or setting a pin stop 45.
- a sensor 43 is provided in the adjusting device 4, which detects the end of the positioning process. This sensor 43 is designed as a non-contact distance sensor.
- a microswitch is used. He is touched by the positioning pin 42 when the predetermined end position is reached and determines the end of the positioning process and ends it. At the same time, for example, the crimping or gluing process can be initialized. The adjusting device 4 can then already be moved away again from the crimping or gluing device.
- the optical fiber end, ferrule 2 and fixing shell 3 are removed, the fixing shell 3 is removed and a pluggable optical fiber end is ready.
- the adjusting device 4 can be moved to an equipped fixing shell 3 or, conversely, an equipped fixing shell 3 with the optical fiber end to the adjusting device 4. Both are done with a feed. It is also obvious that the positioning device with the adjustment unit 4 can also be used separately from a crimping or gluing device 5. After its final positioning, the optical waveguide 1 is still held in the fixing shell 3 within the ferrule 2 by the spring force.
- the adjustment unit 4 is constructed on a cylindrical body which can be attached to the crimping 5 or gluing device 5 'by means of a flange 49.
- the feed now acts on the cylindrical body.
- the positioning pin 42 is preferably fastened in the receptacle in a spring-loaded manner. It has stop shoulders 45 for movements forward, against the ferrule 2, and possibly also backwards. Stops 45, 46 are provided in the receptacle to limit the axial movement of the positioning pin 42.
- the stop 46 to the front prevents the positioning pin from falling out.
- the stop 45 to the rear prevents damage to the sensor 43 or the microswitch in the event of a system fault.
- the sensor 43 is installed in the rear region of the cylindrical body. It determines the current position of the positioning pin 42, or the reaching of its predetermined end point. When this end point is reached, the feed is automatically switched off because the correct position of the optical waveguide 1 in the ferrule 2 has been reached.
- the crimping, gluing or laser welding process can take place or the spring clips can be set.
- the positioning pin 42 can be controlled into its position by a second feed within the cylindrical body by means of an actuator 44. This makes it possible to produce different variants of positioning the optical waveguide 1 in the ferrules 2.
- the control of the actuators 44 takes place by means of the measurements by the already mentioned sensor 43 and corresponding evaluation circuit.
- the ferrule stop 41 can optionally also be designed as a two-stage stop.
- a first ferrule stop 41 with a smaller outside diameter is a stop for plug ferrules 41.
- a second ferrule stop 41 ′ with a larger outside diameter than the first can be used for sleeve ferrules 42.
- the positioning pin 42 has a flat abutment surface 421 which touches the cross section 1 1 4 of the optical waveguide 1 freed from the sheath 11 in the area of the optical conductor 11 3 and the protective sheath 11 2.
- the positioning pin is advantageously provided with a push ring 422 according to FIG. 6.
- the inner diameter of the push ring 422 corresponds to that of the protective jacket 1 1 3. Its outer diameter corresponds to that of the protective jacket or is larger.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Coupling Of Light Guides (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2001237192A AU2001237192A1 (en) | 2000-03-23 | 2001-03-15 | Method and device for positioning an optical waveguide in a ferrule |
EP01909401A EP1269236A2 (de) | 2000-03-23 | 2001-03-15 | Verfahren und vorrichtung zum positionieren eines lichtwellenleiters in einer ferrule |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH5592000 | 2000-03-23 | ||
CH559/00 | 2000-03-23 |
Publications (3)
Publication Number | Publication Date |
---|---|
WO2001071399A2 true WO2001071399A2 (de) | 2001-09-27 |
WO2001071399A3 WO2001071399A3 (de) | 2002-02-28 |
WO2001071399B1 WO2001071399B1 (de) | 2002-03-28 |
Family
ID=4520169
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CH2001/000161 WO2001071399A2 (de) | 2000-03-23 | 2001-03-15 | Verfahren und vorrichtung zum positionieren eines lichtwellenleiters in einer ferrule |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1269236A2 (de) |
AU (1) | AU2001237192A1 (de) |
WO (1) | WO2001071399A2 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005040877A1 (de) * | 2003-09-23 | 2005-05-06 | Schäfer Werkzeug- und Sondermaschinenbau GmbH | Vorrichtung zur festlegung des endes eines säulenförmigen körpers in einer sich parallel zu dessen achse erstreckenden durchbrechung eines steckers |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4192056A (en) * | 1977-12-14 | 1980-03-11 | Thomas & Betts Corporation | Assembly tool |
US4458983A (en) * | 1981-10-05 | 1984-07-10 | Augat Inc. | Resilient ferrule connector |
US4464817A (en) * | 1982-05-24 | 1984-08-14 | Amp Incorporated | Optical waveguide terminating apparatus |
US5007704A (en) * | 1983-10-28 | 1991-04-16 | Baxter International Inc. | Oximeter |
EP0455290A1 (de) * | 1990-04-27 | 1991-11-06 | Philips Patentverwaltung GmbH | Optisches Steckerelement und Verfahren zu seiner Herstellung |
DE4325711A1 (de) * | 1993-07-30 | 1995-02-02 | Siemens Ag | Vorrichtung zur Montage einer Ferrule auf ein Lichtwellenleiterende |
-
2001
- 2001-03-15 AU AU2001237192A patent/AU2001237192A1/en not_active Abandoned
- 2001-03-15 EP EP01909401A patent/EP1269236A2/de not_active Withdrawn
- 2001-03-15 WO PCT/CH2001/000161 patent/WO2001071399A2/de not_active Application Discontinuation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4192056A (en) * | 1977-12-14 | 1980-03-11 | Thomas & Betts Corporation | Assembly tool |
US4458983A (en) * | 1981-10-05 | 1984-07-10 | Augat Inc. | Resilient ferrule connector |
US4464817A (en) * | 1982-05-24 | 1984-08-14 | Amp Incorporated | Optical waveguide terminating apparatus |
US5007704A (en) * | 1983-10-28 | 1991-04-16 | Baxter International Inc. | Oximeter |
EP0455290A1 (de) * | 1990-04-27 | 1991-11-06 | Philips Patentverwaltung GmbH | Optisches Steckerelement und Verfahren zu seiner Herstellung |
DE4325711A1 (de) * | 1993-07-30 | 1995-02-02 | Siemens Ag | Vorrichtung zur Montage einer Ferrule auf ein Lichtwellenleiterende |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005040877A1 (de) * | 2003-09-23 | 2005-05-06 | Schäfer Werkzeug- und Sondermaschinenbau GmbH | Vorrichtung zur festlegung des endes eines säulenförmigen körpers in einer sich parallel zu dessen achse erstreckenden durchbrechung eines steckers |
Also Published As
Publication number | Publication date |
---|---|
AU2001237192A1 (en) | 2001-10-03 |
EP1269236A2 (de) | 2003-01-02 |
WO2001071399A3 (de) | 2002-02-28 |
WO2001071399B1 (de) | 2002-03-28 |
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