DE4441599C1 - Optical fibre identification device - Google Patents

Optical fibre identification device

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Publication number
DE4441599C1
DE4441599C1 DE4441599A DE4441599A DE4441599C1 DE 4441599 C1 DE4441599 C1 DE 4441599C1 DE 4441599 A DE4441599 A DE 4441599A DE 4441599 A DE4441599 A DE 4441599A DE 4441599 C1 DE4441599 C1 DE 4441599C1
Authority
DE
Germany
Prior art keywords
fiber
cable
light source
fibers
optical fibre
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE4441599A
Other languages
German (de)
Inventor
Harald Dr Ing Hintz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MARKUS HINTZ LWL TECHNIK
Original Assignee
MARKUS HINTZ LWL TECHNIK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MARKUS HINTZ LWL TECHNIK filed Critical MARKUS HINTZ LWL TECHNIK
Priority to DE4441599A priority Critical patent/DE4441599C1/en
Application granted granted Critical
Publication of DE4441599C1 publication Critical patent/DE4441599C1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G01M11/30Testing of optical devices, constituted by fibre optics or optical waveguides
    • G01M11/33Testing of optical devices, constituted by fibre optics or optical waveguides with a light emitter being disposed at one fibre or waveguide end-face, and a light receiver at the other end-face
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/04Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4479Manufacturing methods of optical cables
    • G02B6/4482Code or colour marking
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/46Processes or apparatus adapted for installing or repairing optical fibres or optical cables
    • G02B6/56Processes for repairing optical cables
    • G02B6/562Processes for repairing optical cables locatable, e.g. using magnetic means

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)

Abstract

The device has each of the individual optical fibres of an optical fibre cable to be identified illuminated by a respective light source at one end. Each of the light source is clocked at a respective characteristic clock frequency, with the light detected at the end of each optical fibre fed via an optical input stage to a frequency counter (FZ), for measuring the clock frequency to identify each optical fibre. Pref. the light sources are provided by respective LED`s (D1,...D12), supplied with different frequencies within the range between 16 and 0.5 Hz, by a quartz oscillator.

Description

Die Erfindung betrifft eine Vorrichtung zur Identifikation der Fasern eines Lichtwellenleiterkabels.The invention relates to a device for identifying the Fibers of an optical fiber cable.

Eine derartige Vorrichtung ist aus der DE 38 12 143 A1 bekannt.Such a device is known from DE 38 12 143 A1.

Beim Zusammenfügen (Spleißen im Lichtbogen) von mehreren Glasfasern (z. B. 12 oder mehr) mit einem weiteren Lichtwellenleiter- (LWL-)Kabel oder dem Anschluß eines LWL-Kabels an mit optischen Steckverbindern versehene Anschluß-Fasern, sogenannte "pigtails", ist eine spätere Zuordnung der Fasern z. B. zu der Reihenfolge der Fasern in dem ersten LWL-Kabel sehr schwer möglich, da die eigentliche Glas­ faser mit einem Außendurchmesser von 0,125 mm nur noch mit einem so­ genannten Sekundär-Coating aus einer Plastikmasse überzogen ist und der Durchmesser dann 0,9 mm beträgt. Das Einfärben dieses Sekundär-Coatin ist aufgrund der geringen Materialdicke nicht sehr wirkungsvoll und die Farben erscheinen schwach, so daß eine Identifikation der einzelnen Fasern nahezu unmöglich ist.When joining (splicing in the arc) of several glass fibers (e.g. 12 or more) with another fiber optic (Fiber optic) cable or the connection of a fiber optic cable to with optical Connectors provided connector fibers, so-called "pigtails" a later assignment of the fibers z. B. the order of the fibers in the first fiber optic cable very difficult because the actual glass fiber with an outer diameter of 0.125 mm only with such called secondary coating is coated from a plastic mass and the Then diameter is 0.9 mm. The coloring this secondary coating is not due to the low material thickness very effective and the colors appear faint, so that one Identification of the individual fibers is almost impossible.

In der bisherigen Praxis erreicht man eine Zuordnung dadurch, daß beim Abschluß der Anschlußarbeiten ein Monteur nacheinander die einzelnen Fasern mit einer Lichtquelle durchleuchtet und am Ende des Kabels oder der Pigtails ein zweiter Monteur das jeweils durchleuchtete Kabel er­ kennt, wobei er durch eine Sprechverbindung mit dem Monteur, der die Fasern nacheinander durchleuchtet, verbunden sein muß.In previous practice, an assignment is achieved in that Completion of the connection work one installer one after the other Fibers illuminated with a light source and at the end of the cable or the pigtails a second fitter the cable that is always illuminated knows, through a speech connection with the fitter who the Fibers are sequentially examined, must be connected.

Diesen Stand der Technik beschreibt u. a. die Offenlegungsschrift DE 38 12 143 A1, bei der die Lichtwellenleiter an zwei Kabelenden in einer frei gewählten Konfiguration einzeln zugänglich angeordnet werden. Anschließend wird an einem Kabelende ein Lichtsender an einen der Lichtwellenleiter angekoppelt und am anderen Kabelende ein Licht­ empfänger nacheinander an so viele einzelne Lichtwellenleiter ange­ schlossen, bis ein Empfangssignal festgestellt wird. Die Lage des so jeweils festgestellten Lichtwellenleiters innerhalb der Kabelkonfi­ guration wird dann festgehalten.This state of the art describes u. a. the disclosure DE 38 12 143 A1, in which the optical fibers at two cable ends in can be arranged individually accessible in a freely selected configuration. Then a light transmitter is connected to one of the ends of the cable Optical fiber coupled and a light at the other end of the cable consecutively attached to so many individual optical fibers closed until a received signal is detected. The location of the sun each determined optical fiber within the cable confi guration is then recorded.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung nach dem Oberbegriff des Anspruchs 1 zu schaffen, die eine möglichst wenig zeitaufwendige Identifikation der Fasern des Lichtwellenleiterkabels ermöglicht.The invention has for its object a Device according to the preamble of claim 1 to create the least time consuming Identification of the fibers of the optical fiber cable enables.

Diese Aufgabe wird durch die im kennzeichnenden Teil des Anspruchs 1 angegebenen Merkmale gelöst.This task is characterized by the in the Part of claim 1 specified features solved.

Ein Ausführungsbeispiel der Erfindung wird anhand der Skizze nach Fig. 1 näher erläutert:An embodiment of the invention is explained in more detail with reference to the sketch according to FIG. 1:

In einer Mehrfach-Lichtquelle L.Q. speist ein Quarzoszillator eine Reihe von 12 Lichtquellen D₁ bis D₁₂, z. B. 12 Leuchtdioden LED's mit einer Emission im Wellenlängen-Bereich zwischen Rot und der Grenze zu Infrarot, mit diskreten Taktfrequenzen f₁ bis f₁₂ im Bereich von 2731 bis 64 Hz, die dann von den Leuchtdioden über optische Steckverbinder 1S bis 12S als getaktetes Licht ausgesendet werden.In a multiple light source L.Q. a quartz oscillator feeds one Row of 12 light sources D₁ to D₁₂, z. B. 12 light emitting diodes with an emission in the wavelength range between Red and the border with infrared, with discrete clock frequencies f₁ to f₁₂ in the range from 2731 to 64 Hz, the then from the LEDs via optical connectors 1S to 12S as clocked light can be emitted.

Den Taktfrequenzen sind durch eine Referenztabelle die Ordnungszahlen von 1 . . . 12 für die LWL-Fasern zugeteilt (2731 Hz = 1. Faser, 64 Hz = 12. Faser). The clock frequencies are the ordinal numbers through a reference table from 1 . . . 12 allocated for the fiber optic fibers (2731 Hz = 1st fiber, 64 Hz = 12.Fiber).  

Am einen Ende KE1 des zu identifizierenden Kabels wird jede Faser mit einer der Lichtquellen von 1-12 verbunden, so daß die Fasern beliebig die Reihenfolge 1-12 erhalten.At one end KE1 of the cable to be identified, each fiber is included one of the light sources connected from 1-12 so that the fibers receive any order 1-12.

Am anderen Ende des Kabels KE2 wird eine beliebige Faser genommen und mit dem Frequenzzähler FZ verbunden. Die auf dem Zähler erscheinende Zahl gestattet über die Referenztabelle die direkte Zuordnung des unter­ suchten Kabels. (Die angezeigte Zahl 1365 in Fig. 1 entspricht der Faser 3.) Nacheinander wird so jede Faser ausgemessen und nach der Messung entweder mit einer Faser-Kennzeichnung versehen oder in die zu der Faser gehörende Kupplung eines sogenannten Rangier- oder Patchfeldes gesteckt.Any fiber is taken at the other end of the cable KE2 and connected to the frequency counter FZ. The number that appears on the meter allows the cable under investigation to be assigned directly via the reference table. (The number 1365 shown in FIG. 1 corresponds to fiber 3. ) Each fiber is measured in succession and after the measurement either provided with a fiber identification or inserted into the coupling belonging to the fiber of a so-called patching or patch panel.

Die Identifizierung z. B. eines 12fach-Kabels ist somit nur noch durch einen Techniker, der nach dem Aufstecken der Fasern auf die Lichtquellen zum anderen Kabelende geht und die Fasern ausmißt, mit einem Minimum an Zeitaufwand geschehen.The identification z. B. a 12-way cable is thus only through a technician who, after attaching the fibers to the light sources goes to the other end of the cable and measures the fibers, with one Minimum of time spent happening.

Werden z. B. beide Enden eines LWL-Kabels mit Pigtails versehen, können die zuerst angeschlossenen Pigtails auf die Lichtquellen gesteckt werden, und der Monteur erkennt sofort am anderen Ende des Kabels an den leuchtenden Stirnflächen der Glasfasern, daß alle Fasern optischen Durchgang haben.Are z. B. can provide both ends of a fiber optic cable with pigtails put the pigtails first connected to the light sources and the installer immediately recognizes the other end of the cable the shining end faces of the glass fibers that all fibers optical To have continuity.

Nach dem Anschluß der Pigtails werden diese wiederum ausgemessen, und die Zuordnung zur Reihenfolge der Fasern am ersten Kabelende ist gewährleistet.After connecting the pigtails these are measured again and the assignment to The order of the fibers at the first end of the cable is guaranteed.

Claims (2)

1. Vorrichtung zur Identifikation der Fasern eines Lichtwellenleiter- (LWL-)Kabels, dadurch gekennzeichnet, daß sie gleichzeitig jede Faser des zu identifizierenden LWL-Kabels an einem Kabelende mit jeweils einer der jeweiligen Faser zugeordneten Lichtquelle durchleuchtet, wobei jede Lichtquelle mit einem ihr zugehörigen, festen Takt gespeist wird, der sich von Lichtquelle zu Lichtquelle unterscheidet, und am anderen Ende des LWL-Kabels nacheinander jede Faser durch einen mit einer optischen Eingangsstufe versehenen Frequenzzähler untersuchbar ist, wobei die dabei gemessene Taktfrequenz zur Identifizierung der jeweils untersuchten Faser dient.1. Device for identifying the fibers of an optical waveguide (fiber optic) cable, characterized in that it simultaneously examines each fiber of the fiber optic cable to be identified at one cable end, each with a light source assigned to the respective fiber, each light source having an associated one , fixed clock is fed, which differs from light source to light source, and at the other end of the fiber optic cable each fiber can be examined in succession by a frequency counter provided with an optical input stage, the clock frequency measured thereby being used to identify the fiber under investigation. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß bei einer geringen Anzahl von Fasern pro LWL-Kabel jede der Lichtquellen mit einer diskreten Taktfrequenz im Bereich von 16 bis 0,5 Hz gespeist wird.2. Device according to claim 1, characterized in that at one small number of fibers per fiber optic cable using each of the light sources a discrete clock frequency in the range of 16 to 0.5 Hz becomes.
DE4441599A 1994-11-23 1994-11-23 Optical fibre identification device Expired - Fee Related DE4441599C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4441599A DE4441599C1 (en) 1994-11-23 1994-11-23 Optical fibre identification device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4441599A DE4441599C1 (en) 1994-11-23 1994-11-23 Optical fibre identification device

Publications (1)

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DE4441599C1 true DE4441599C1 (en) 1996-02-08

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DE4441599A Expired - Fee Related DE4441599C1 (en) 1994-11-23 1994-11-23 Optical fibre identification device

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2375668A (en) * 2000-12-14 2002-11-20 Radiodetection Ltd Identifying fibres by transmitting unique waveforms down them
DE10321756B3 (en) * 2003-05-15 2004-12-23 Kurt Steffens Electrical testing device for multi-fibre optical cable connections in optical telecommunications network has overall connection testing mode and individual fibre connections testing mode
EP1691225A1 (en) * 2005-02-11 2006-08-16 Deutsche Telekom AG Marking of optical fibers for identification

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3812143A1 (en) * 1988-04-12 1989-10-26 Siemens Ag Method for identifying individual optical waveguides within a multi-core optical cable

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3812143A1 (en) * 1988-04-12 1989-10-26 Siemens Ag Method for identifying individual optical waveguides within a multi-core optical cable

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2375668A (en) * 2000-12-14 2002-11-20 Radiodetection Ltd Identifying fibres by transmitting unique waveforms down them
GB2375668B (en) * 2000-12-14 2003-07-09 Radiodetection Ltd Identifying fibres of fibre optic cables
DE10321756B3 (en) * 2003-05-15 2004-12-23 Kurt Steffens Electrical testing device for multi-fibre optical cable connections in optical telecommunications network has overall connection testing mode and individual fibre connections testing mode
EP1691225A1 (en) * 2005-02-11 2006-08-16 Deutsche Telekom AG Marking of optical fibers for identification

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8100 Publication of patent without earlier publication of application
D1 Grant (no unexamined application published) patent law 81
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee