CA2103832A1 - Method and apparatus for forming a branch connection - Google Patents
Method and apparatus for forming a branch connectionInfo
- Publication number
- CA2103832A1 CA2103832A1 CA002103832A CA2103832A CA2103832A1 CA 2103832 A1 CA2103832 A1 CA 2103832A1 CA 002103832 A CA002103832 A CA 002103832A CA 2103832 A CA2103832 A CA 2103832A CA 2103832 A1 CA2103832 A1 CA 2103832A1
- Authority
- CA
- Canada
- Prior art keywords
- cable
- sleeve
- light waveguide
- region
- splice
- 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.)
- Abandoned
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
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
- G02B6/4431—Protective covering with provision in the protective covering, e.g. weak line, for gaining access to one or more fibres, e.g. for branching or tapping
-
- 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
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/4471—Terminating devices ; Cable clamps
- G02B6/4472—Manifolds
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Cable Accessories (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A method for branching individual light waveguide leads out of an uncut light waveguide cable, which method includes removing a portion of the cladding of the cable in a first region over a sufficient distance to enable obtaining access to a lead and to cut the lead, applying a sleeve over this first region, removing a portion of the cladding in a second region spaced from the first region with the amount of spacing corresponding to the desired length of the lead to be spliced, pulling the cut lead out in the second region, forming the splice to a branch connection and then holding the excess lead and splice and applying a second sleeve over the second region. The arrangement includes two sleeves which are spaced a desired distance for the lead and a holding device, such as a splice cassette, for the excess portion of the lead and for holding the splice.
A method for branching individual light waveguide leads out of an uncut light waveguide cable, which method includes removing a portion of the cladding of the cable in a first region over a sufficient distance to enable obtaining access to a lead and to cut the lead, applying a sleeve over this first region, removing a portion of the cladding in a second region spaced from the first region with the amount of spacing corresponding to the desired length of the lead to be spliced, pulling the cut lead out in the second region, forming the splice to a branch connection and then holding the excess lead and splice and applying a second sleeve over the second region. The arrangement includes two sleeves which are spaced a desired distance for the lead and a holding device, such as a splice cassette, for the excess portion of the lead and for holding the splice.
Description
3~32 ACKGROUND OF THE INVENTIO~!
The present invention is directed to a method for branching light waveguide leads out of an uncut ligh~ waveguide cable and to an arrangemsnt for p~rformlng the branching operation.
Methods for branching individual lines vut of an uncut cabl~ are generally known and are stan~ard practice given cables containing copper wires. No problems occur with copp~r wir~ cables, namely ther~ is no n~ed for a special ms~hod for the spliclng technlque whan working with copper wire. This techniqu~ is genarally known as "notching technique".
The application of notching technique, however, becomes more difficult given light waveguida cables. This is namely because a greater lead length is required for the splicing operation, and this additional 10ad length must com3 with the rslieving length. A minlmum lead lan~th of approximateiy 500 mm is required under favorable ccnditions for the manipulation of the light waveguids fibers in a thermal splicin~
apparatus, particularly for fusion splices or givfln a~enuation rneasurements. Whan the bundle or lead reserves are to be meaningfully taken into consideration, this requires rel3eving lengths that far @xceed acc~ptable sleev~ l~ngths f~r cable sle~v~s.
SUMMe~ Y C3F TI IE IINYENTIOI I
The ob~ect of the present invantion is to create a method wherein the conditions a~ a light waveguid~ cable ars taksn into consideration so that the measures are undertaken with which a requir0d add~d length of a ligh~ waveguide lead to br~
branched off ean ba produced from an uneut light wave~uids cable.
2la3s32 The object is then achieved with a m0thod for branching inclividual light waveguide leads out of an uncut light wavaguide cable, wherein the method includes the steps of freeing a portion of the cable cladding over a l~n~th required to enable separation of a light waveguide lead in ~he cable, applying a notchin~ or first sleeve over ~his first region of the light waveguide cable which is freed of the cable cladding after cutting of the desired leads, thsn freeing and removing the light waveguide cable cladding in a second r~gion over a length required ~or puliing ~h~ cut light waveguide lead~3 out of th0 cabl~, with this s~cond r~gion being sp~ced from ~h~ first-mantioned region a suffici~nt distance to provide the desired length for the light waveguid~ iead that is r~quired for splicing, pulling thc light waveguides which have been separated at the notchlng or flrst sleeve out of the cable in ~he second region, splicing the pulled leads to a light waveguide lead of a branching cable, depositing the excsss iength of the spliced wav00uide l~ad In a splic~-holdin~ m~ans ~nd th~n a,oplying a spliced or s~cond sl~ev~
over the second cut region and over tha splics-holding means.
Additional obJ~cts o~th~ invention ar~ to fashion an ~rrangement with whos~
assistance the above-rnentioned method can be implemented, and this object is achieved wlth an arrangement for branching llght waveguide leads out of an uncut light waveguide cabl0, wherein a notching or first sleeve is arranged over a notched re~ion of the ligh~
waveguide cable for ~he parlin~ of a light waveguid~ lead, a splice sleeve is arranged over a light waveguide lead in a s~cond region o~ the light wav~uide cabte, which is freed of the cabla eladdin~, ~nd the spacing betw~en the two fegions corresponds to the addition~i isn~th rsqulred for splicing light waveguido leads.
The advantages of the method of the inventisn and the arrang0ment corresponding thereto predominantly comprise that the required adcled lead iength can be created by branching ligtlt waveguide l~ads in a relativ~ly simple manner. Instead of a sin~le, extremely long cable sleeve, two smalt cables sleeves that ar~ specifically matchsd to the respactive requirements and are arranged at a spacing from one anothe are employed in the method of the present invention. This spacing is based on the requirement for the added lead length or, respectively, rsserve lead length so that one has a great variabili~y here.
The splicing is undertaken in one cable sl~eve, which is r~ferred to as a splicing sleeve, whereas the light waveguide leads of ~he light waveguide cable required for branching ar~ m~r~ly cut off or partecl in the second cable sleeve, which is referr~d to as a notching sleeve. The light waveguide leads parted in the notching sleeve are then pulled out of the cable union in the splicing sleeve area and are correspondingly spliced to liçtht waveguide leads of a branchin~ cabl~. To this ~nd, the light waveguide cable is stripped of a portion of the cable cladding in ths region of the notching sleeve over a length which Is required ~or enabling notchiny or separating the desired number of light waveguide l~ads, which length is approximately 20 mm. The cable can hav~ a bundle of leads, can have ribbons or, rssp0ctively, corresponding leads which are ~irmly enveloped or leads which are in a chambered cable or individual fibers of a maxi bundle from which the sheathes have bean previously removed ov0r a certain l~ngth and ar~ subsequently suppl~mented ln turn. ~er the corresponding lead has been par~ed, tension int~rceptors, Inso~ar ~s they proceed in or directly under the cabl~ cladding, as well as shielding can be restored. The housings employed here and the respec~ive structure of the cable sleaves can be provided with mechanical or therrnai sealing systems and are fundam~ntally Indsp~ndent of the principla of ~he method for branching at leas~ one light waveguld~ out of an uncut cable according to ~he present invcntion. Shrink coilars ~hat preferabiy cornprise a length of approximately 120 mm and a diameter corresponatlng to ....
, : :
The present invention is directed to a method for branching light waveguide leads out of an uncut ligh~ waveguide cable and to an arrangemsnt for p~rformlng the branching operation.
Methods for branching individual lines vut of an uncut cabl~ are generally known and are stan~ard practice given cables containing copper wires. No problems occur with copp~r wir~ cables, namely ther~ is no n~ed for a special ms~hod for the spliclng technlque whan working with copper wire. This techniqu~ is genarally known as "notching technique".
The application of notching technique, however, becomes more difficult given light waveguida cables. This is namely because a greater lead length is required for the splicing operation, and this additional 10ad length must com3 with the rslieving length. A minlmum lead lan~th of approximateiy 500 mm is required under favorable ccnditions for the manipulation of the light waveguids fibers in a thermal splicin~
apparatus, particularly for fusion splices or givfln a~enuation rneasurements. Whan the bundle or lead reserves are to be meaningfully taken into consideration, this requires rel3eving lengths that far @xceed acc~ptable sleev~ l~ngths f~r cable sle~v~s.
SUMMe~ Y C3F TI IE IINYENTIOI I
The ob~ect of the present invantion is to create a method wherein the conditions a~ a light waveguid~ cable ars taksn into consideration so that the measures are undertaken with which a requir0d add~d length of a ligh~ waveguide lead to br~
branched off ean ba produced from an uneut light wave~uids cable.
2la3s32 The object is then achieved with a m0thod for branching inclividual light waveguide leads out of an uncut light wavaguide cable, wherein the method includes the steps of freeing a portion of the cable cladding over a l~n~th required to enable separation of a light waveguide lead in ~he cable, applying a notchin~ or first sleeve over ~his first region of the light waveguide cable which is freed of the cable cladding after cutting of the desired leads, thsn freeing and removing the light waveguide cable cladding in a second r~gion over a length required ~or puliing ~h~ cut light waveguide lead~3 out of th0 cabl~, with this s~cond r~gion being sp~ced from ~h~ first-mantioned region a suffici~nt distance to provide the desired length for the light waveguid~ iead that is r~quired for splicing, pulling thc light waveguides which have been separated at the notchlng or flrst sleeve out of the cable in ~he second region, splicing the pulled leads to a light waveguide lead of a branching cable, depositing the excsss iength of the spliced wav00uide l~ad In a splic~-holdin~ m~ans ~nd th~n a,oplying a spliced or s~cond sl~ev~
over the second cut region and over tha splics-holding means.
Additional obJ~cts o~th~ invention ar~ to fashion an ~rrangement with whos~
assistance the above-rnentioned method can be implemented, and this object is achieved wlth an arrangement for branching llght waveguide leads out of an uncut light waveguide cabl0, wherein a notching or first sleeve is arranged over a notched re~ion of the ligh~
waveguide cable for ~he parlin~ of a light waveguid~ lead, a splice sleeve is arranged over a light waveguide lead in a s~cond region o~ the light wav~uide cabte, which is freed of the cabla eladdin~, ~nd the spacing betw~en the two fegions corresponds to the addition~i isn~th rsqulred for splicing light waveguido leads.
The advantages of the method of the inventisn and the arrang0ment corresponding thereto predominantly comprise that the required adcled lead iength can be created by branching ligtlt waveguide l~ads in a relativ~ly simple manner. Instead of a sin~le, extremely long cable sleeve, two smalt cables sleeves that ar~ specifically matchsd to the respactive requirements and are arranged at a spacing from one anothe are employed in the method of the present invention. This spacing is based on the requirement for the added lead length or, respectively, rsserve lead length so that one has a great variabili~y here.
The splicing is undertaken in one cable sl~eve, which is r~ferred to as a splicing sleeve, whereas the light waveguide leads of ~he light waveguide cable required for branching ar~ m~r~ly cut off or partecl in the second cable sleeve, which is referr~d to as a notching sleeve. The light waveguide leads parted in the notching sleeve are then pulled out of the cable union in the splicing sleeve area and are correspondingly spliced to liçtht waveguide leads of a branchin~ cabl~. To this ~nd, the light waveguide cable is stripped of a portion of the cable cladding in ths region of the notching sleeve over a length which Is required ~or enabling notchiny or separating the desired number of light waveguide l~ads, which length is approximately 20 mm. The cable can hav~ a bundle of leads, can have ribbons or, rssp0ctively, corresponding leads which are ~irmly enveloped or leads which are in a chambered cable or individual fibers of a maxi bundle from which the sheathes have bean previously removed ov0r a certain l~ngth and ar~ subsequently suppl~mented ln turn. ~er the corresponding lead has been par~ed, tension int~rceptors, Inso~ar ~s they proceed in or directly under the cabl~ cladding, as well as shielding can be restored. The housings employed here and the respec~ive structure of the cable sleaves can be provided with mechanical or therrnai sealing systems and are fundam~ntally Indsp~ndent of the principla of ~he method for branching at leas~ one light waveguld~ out of an uncut cable according to ~he present invcntion. Shrink coilars ~hat preferabiy cornprise a length of approximately 120 mm and a diameter corresponatlng to ....
, : :
2~03832 the cable diameter are especially well-suited for the notchint3 sleeve, which can be designed especially small. Clamp sleeves composed of end face s~al members and a socket pipe with a longitudinal closure are particularly well-suited for the splicing sleeve with branching. In the splicing sleeve, the cable cladding of the light waveguide cabte is removed, for instance over a length of 100 mm. The tight waveguide bundles or ~eads parted in the notching sleeve are then pulled out from this opening and then spUced.
Moreovsr, the required terminations, such as ssalin~ and tension interception, are also arranged her~ a~ th~ opening of thc cable cladding. The splices are thsn provid~3d with appropriate known splice prot~ctions and are deposited, for example, In a splice cassette with the required aclded tead Isngth.
For example, specific splice cassettes which are shapad so that, for example, they can be oentrally mountcrl over thc shoulder location o~ the main light wave~uide cable are also suited for this purpose so ~ha~ they can also be simultaneously employsd as part of th~ tension interc~ption for bridging tensil0 and compressiv~ forces.
Sl0eves composed of half-shells with mechanical seal systerns ar0 also suitabla for the cable sleeves, especially for the splicing sleeve. However; the shrink technique can also be utilized for tha splicing sleeve:
Through-leads and through-conneetions can be provided for correspondin~
serviee matter~, th~se, for examplc, bein~ capable of being connected at th~ inside of the oabie sleave to ~he copper lines that are co-conducted in the light waveguicla cabie.
Thus, an adaptvr for ~elephone or measuring equipmsn~ is produced in this way.
~1~3832 The method of the invention can be fundamentally utilized for any type of cabl~ techniquc. Thus, for example, it can be used for filled cable sys~ems or cablc systems ~hat are mcnitored with compressed air. In such instance, appropriate valves are appiied to the cut cable.
t:)ther advantages and features of the invention will be readily apparent from the following description of the pre~erred embodiments, the drawing and claims.
BRIEE ~ES~ T1~2F TtlE DRAWIII~à
Th~ Figure Is a cross s~ctional vlew with portions in elevation for purposes of illustration of two splice sleeves utilized in the arrangement and for periorming the method in accordance with ths present invention.
ESCRIPTION QF THE PREFERRED EMBOD!MES~ITS
The principles of the present invention ars particularly useful for producing branching of li~h~ waveguide leads from an uncut cablej as illus~rated in the Figur~.
In producing a branching of light waveguide leads from an uncut cable 8, difficultias for th~ splicing of the light wav0guide leads occurs insofar as certain adcled lengths of the light waveguide lead must be available. Since, in particular, attention must aiso b~ paid ~o the minimally allowabl~ bending radii of the light waveguide leads, the required added leng~h must be taken from the light waveguide cable and can no longer b~ reasonably cov~red with a length regiDn of a normal cabl~ sleeve. According ~o the invention, a method has now been d~veloped with which one can obtain the required added leng~h in each of the light waveguide leads. Thus, the light waveguiclle cable 8 is stripped of the cabl~ claddin0 at least partialiy or all around ~t ~wo iocations thalt foll~w . .
2:~)3832 one another. At the first location, only an open region 16 is required that is ade~uate to enable parting or severing th~ light waveguide leads 6 in the light waveguida cable 8, which light waveguide !ead 6 is ~o be branched. Thus, with cutting, two light waveguide laad ends 6a and 6b will occun The ligh~ waveguide end 6b continues to remain unoccupied in the further cable union, whereas the light waveguide lead end 6a, which is to be branched off, is pulled out in a la~er work step in the second sleeve.
The cabl~ claddlng ends of ~h~ ht waveguid~ cable 8 ar~ then provlded with appropriate cable terminations in a known way and these, for exampie, con~ain cable interceptors 5 with clips 11, As needed, additional force-transmining ~lements 20, such as rails or the like, can be provided. Shielded connections 12 can also be implemented in tha way that is known per se to extend between the cladding of the cabl~ across the open area 16. A cabla sleeve, which is referred to a notching s!eeve 2, is then ltightly applied over this open region 1B of the cable cladding.
This cable sleeve 2 can now be designed especia!ly small in cable sleeves in the form of collar-llke shrink sleeves having longitudinal closures which ar~ best-suited for this pur,oosa. One can manage here with a sleeve length 18, which is in a range of 120 mm to 150 mm, whereas the diametar llas hardly any bearing compared to the cable.
For exarnple, the diameter may be 50 mm. However, what are referred to as mechanical cable sleeves can also be arranged, and these are essentially cornposad of and seal members and o~ longitudinally stotted socket pipe. Sleeve embodiments in half-shell technique can ~Iso be fundamentally employed.
Th~ light waveguide cable 8 is at least partially stripped of the cable cladding for a second time In a second region, which is an open region 15 at a spacing 19 that 2:~03832 approximately corresponds to the order of magnitude of the required added length of the light wavsguida leads which are to be branched. The length s~f ~h~ open r6gion 15 is dependent on how much space is required for pulling the Ik~ht waveguide leads 6a already parted in the notching sleeve area ~6.
After the pulling of these light waveguides leads 6a which are to be branched, the splice with the correspon~ing li0ht waveguide of the branching cable 9 is produced, whereby a standard splice protection elernent 10 may be employed. The added length of the light waveguide leads 6 is now accornmodated in a known way in arcuat~ loops within a spllcing cassette ~. Moreover, the known cable termination units, with respect to the cable interceptions and the like with interceptor elements 5 and clips 11, can bs utilized herein, wherein shielding connections ~ 2 between the ends of the light waveguide cables 8 can also be provided. Force-transmitting elements can then, likewise, be at~ached. However, it is ~hus also possibls ~hat ~he splicing cassette 4 acts as a force-transmitting elem~nt and is connected to the ends of the cable c!adding of the light waveguide cabls 8.
A further or second cable sleeve, which is referred to as a splicing sleeve 1, is then tightly applied around these arrangements, whereby this embodiment of the splicing sleeve 1 i5 meraly indicated here. All designs on the basis of what are referred to as mechanical sleev~s or on ~h~ basis of shrink sleeves that are standard in cable-connecting technotogy are available and can be used for this purpose. The len~th 17 of the splicing sleev0 1 is essen~ialiy defined by ~he splice units. In this Figure, for example, an embodiment is indica~ed tha~ is composed of ~NO half-shells. The known teehniques with respect to the seaiing in the branoh regions can likewise be utilized in the branch r8gions. This, for ~xampl~, can occur with ~hs assistance of matched seal pi~ces. Giv~n ~3~2 employment of shrink technique, the known technique for sealing in the gore region with the assistancs of clarnps is available, and this will hold the cable sleeve together in sealing fashion between the branching cables.
Although various minor modifications may b~ suggested by those vers~d in the arl, it should be unders~ood that we wish to embody within the scope of th~ patent granted h~reon all such modifications as reasonably and prop~rly comc within ~ha scop~
of our contribution to the art.
Moreovsr, the required terminations, such as ssalin~ and tension interception, are also arranged her~ a~ th~ opening of thc cable cladding. The splices are thsn provid~3d with appropriate known splice prot~ctions and are deposited, for example, In a splice cassette with the required aclded tead Isngth.
For example, specific splice cassettes which are shapad so that, for example, they can be oentrally mountcrl over thc shoulder location o~ the main light wave~uide cable are also suited for this purpose so ~ha~ they can also be simultaneously employsd as part of th~ tension interc~ption for bridging tensil0 and compressiv~ forces.
Sl0eves composed of half-shells with mechanical seal systerns ar0 also suitabla for the cable sleeves, especially for the splicing sleeve. However; the shrink technique can also be utilized for tha splicing sleeve:
Through-leads and through-conneetions can be provided for correspondin~
serviee matter~, th~se, for examplc, bein~ capable of being connected at th~ inside of the oabie sleave to ~he copper lines that are co-conducted in the light waveguicla cabie.
Thus, an adaptvr for ~elephone or measuring equipmsn~ is produced in this way.
~1~3832 The method of the invention can be fundamentally utilized for any type of cabl~ techniquc. Thus, for example, it can be used for filled cable sys~ems or cablc systems ~hat are mcnitored with compressed air. In such instance, appropriate valves are appiied to the cut cable.
t:)ther advantages and features of the invention will be readily apparent from the following description of the pre~erred embodiments, the drawing and claims.
BRIEE ~ES~ T1~2F TtlE DRAWIII~à
Th~ Figure Is a cross s~ctional vlew with portions in elevation for purposes of illustration of two splice sleeves utilized in the arrangement and for periorming the method in accordance with ths present invention.
ESCRIPTION QF THE PREFERRED EMBOD!MES~ITS
The principles of the present invention ars particularly useful for producing branching of li~h~ waveguide leads from an uncut cablej as illus~rated in the Figur~.
In producing a branching of light waveguide leads from an uncut cable 8, difficultias for th~ splicing of the light wav0guide leads occurs insofar as certain adcled lengths of the light waveguide lead must be available. Since, in particular, attention must aiso b~ paid ~o the minimally allowabl~ bending radii of the light waveguide leads, the required added leng~h must be taken from the light waveguide cable and can no longer b~ reasonably cov~red with a length regiDn of a normal cabl~ sleeve. According ~o the invention, a method has now been d~veloped with which one can obtain the required added leng~h in each of the light waveguide leads. Thus, the light waveguiclle cable 8 is stripped of the cabl~ claddin0 at least partialiy or all around ~t ~wo iocations thalt foll~w . .
2:~)3832 one another. At the first location, only an open region 16 is required that is ade~uate to enable parting or severing th~ light waveguide leads 6 in the light waveguida cable 8, which light waveguide !ead 6 is ~o be branched. Thus, with cutting, two light waveguide laad ends 6a and 6b will occun The ligh~ waveguide end 6b continues to remain unoccupied in the further cable union, whereas the light waveguide lead end 6a, which is to be branched off, is pulled out in a la~er work step in the second sleeve.
The cabl~ claddlng ends of ~h~ ht waveguid~ cable 8 ar~ then provlded with appropriate cable terminations in a known way and these, for exampie, con~ain cable interceptors 5 with clips 11, As needed, additional force-transmining ~lements 20, such as rails or the like, can be provided. Shielded connections 12 can also be implemented in tha way that is known per se to extend between the cladding of the cabl~ across the open area 16. A cabla sleeve, which is referred to a notching s!eeve 2, is then ltightly applied over this open region 1B of the cable cladding.
This cable sleeve 2 can now be designed especia!ly small in cable sleeves in the form of collar-llke shrink sleeves having longitudinal closures which ar~ best-suited for this pur,oosa. One can manage here with a sleeve length 18, which is in a range of 120 mm to 150 mm, whereas the diametar llas hardly any bearing compared to the cable.
For exarnple, the diameter may be 50 mm. However, what are referred to as mechanical cable sleeves can also be arranged, and these are essentially cornposad of and seal members and o~ longitudinally stotted socket pipe. Sleeve embodiments in half-shell technique can ~Iso be fundamentally employed.
Th~ light waveguide cable 8 is at least partially stripped of the cable cladding for a second time In a second region, which is an open region 15 at a spacing 19 that 2:~03832 approximately corresponds to the order of magnitude of the required added length of the light wavsguida leads which are to be branched. The length s~f ~h~ open r6gion 15 is dependent on how much space is required for pulling the Ik~ht waveguide leads 6a already parted in the notching sleeve area ~6.
After the pulling of these light waveguides leads 6a which are to be branched, the splice with the correspon~ing li0ht waveguide of the branching cable 9 is produced, whereby a standard splice protection elernent 10 may be employed. The added length of the light waveguide leads 6 is now accornmodated in a known way in arcuat~ loops within a spllcing cassette ~. Moreover, the known cable termination units, with respect to the cable interceptions and the like with interceptor elements 5 and clips 11, can bs utilized herein, wherein shielding connections ~ 2 between the ends of the light waveguide cables 8 can also be provided. Force-transmitting elements can then, likewise, be at~ached. However, it is ~hus also possibls ~hat ~he splicing cassette 4 acts as a force-transmitting elem~nt and is connected to the ends of the cable c!adding of the light waveguide cabls 8.
A further or second cable sleeve, which is referred to as a splicing sleeve 1, is then tightly applied around these arrangements, whereby this embodiment of the splicing sleeve 1 i5 meraly indicated here. All designs on the basis of what are referred to as mechanical sleev~s or on ~h~ basis of shrink sleeves that are standard in cable-connecting technotogy are available and can be used for this purpose. The len~th 17 of the splicing sleev0 1 is essen~ialiy defined by ~he splice units. In this Figure, for example, an embodiment is indica~ed tha~ is composed of ~NO half-shells. The known teehniques with respect to the seaiing in the branoh regions can likewise be utilized in the branch r8gions. This, for ~xampl~, can occur with ~hs assistance of matched seal pi~ces. Giv~n ~3~2 employment of shrink technique, the known technique for sealing in the gore region with the assistancs of clarnps is available, and this will hold the cable sleeve together in sealing fashion between the branching cables.
Although various minor modifications may b~ suggested by those vers~d in the arl, it should be unders~ood that we wish to embody within the scope of th~ patent granted h~reon all such modifications as reasonably and prop~rly comc within ~ha scop~
of our contribution to the art.
Claims (26)
1. A method for branching individual light waveguide leads out of an uncut light waveguide cable, said method comprising the steps of removing a portion of a cable cladding in a first region with the amount of cable cladding being dependent on the amount necessary to obtain access for cutting a light waveguide lead, cutting the desired light waveguide, applying a notching sleeve over the first region freed of the cable cladding, then removing a cable cladding in a second region spaced from the first region, with the second region having a length required to enable pulling the cut light waveguide lead out of the cable, said second region being spaced from the first region a distance equal to the additional length required for the light waveguide lead to enable splicing, pulling the cut light waveguide lead out of the cable and out of the second opening, splicing the light waveguide lead to a branching cable, depositing the splice waveguide lead and the excess length of the splice lead in a splice holder, and then applying a splice sleeve over the second cut region and over the splice holder.
2. A method according to claim 1, wherein the steps of applying the splice sleeve and the notching sleeve utilize a heat-restorable shrink sleeve and includes positioning the sleeve over the selected region and applying heat to the sleeve.
3. A method according to claim 1, wherein the splice sleeve and the notching sleeve are both mechanically closable clamp sleeves, and said method of applying said sleeves includes positioning the sleeves over the respective regions and mechanically closing the clamp sleeves thereon.
4. A method according to claim 1, wherein the splice sleeve is a mechanically closable sleeve and the notching sleeve is a heat-restorable sleeve and said step of applying the splice sleeve mechanically closes the clamp sleeve over the second region, while the step of applying the notching sleeve heat-shrinks the sleeve thereon.
5. A method according to claim 1, wherein the splice holder is a splicing cassette and said step of placing the excess lead and splice in the splice holder includes placing the splice in the splicing cassette and wrapping the excess lead in said cassette.
6. A method according to claim 1, which includes applying cable interceptor devices and mechanical force-bridging elements and existing shielding bridges to the cable cladding ends in the region of the light waveguide cable stripped of the cable cladding prior to applying the respective sleeve.
7. A method according to claim 1, wherein the step of removing the cable cladding removes only a portion of the circumference of the cable cladding.
8. A method according to claim 1, wherein the steps of removing cladding removes all of the cladding in the selected region.
9. An arrangement for branching individual light waveguide leads out of an uncut light waveguide cable comprising a first notching sleeve being arranged over a first region of the light waveguide cable, wherein the light waveguide lead to be spliced is separated, a splicing sleeve being arranged over a light waveguide lead splice in a second region of the light waveguide cable which is free of cable cladding and Is at a spacing from the notching sleeve corresponding to the added length required for splicing the light waveguide lead.
10. An arrangement according to claim 9, wherein the splicing sleeve and the notching sleeve are each a clamp sleeve composed of a longitudinally slotted socket pipe having closure devices along a longitudinal edge and seal members which are adapted for cable admission arranged on the end faces.
11. An arrangement according to claim 9, wherein the splicing sleeve and the notching sleeve are both heat-restorable shrink sleeves.
12. An arrangement according to claim 9, wherein the splicing sleeve is constructed as a mechanical clamp sleeve and the notching sleeve is a shrinkable sleeve.
13. An arrangement according to claim 9, which includes cable interceptor devices and force-bridging elements being arranged at the cable cladding ends in both the first and second regions of the light waveguide which had the cable cladding removed.
14. An arrangement according to claim 9, wherein the spacing between the two sleeves amounts to the order of magnitude of 500 mm.
15. An arrangement according to claim 9, wherein the length of the first region of the light waveguide cable freed of cable cladding in the notching sleeve is in the order of magnitude of 20 mm.
16. An arrangement according to claim 9, wherein each region of the cable cladding stripped from the cable extends all around the light waveguide cable.
17. An arrangement according to claim 9, wherein leach region of the cable cladding stripping only extends around a portion of the circumference of the light waveguide cable.
18. An arrangement according to claim 9, wherein the existing shielding in the light waveguide cable is bridged in the regions where the cable cladding has been removed.
19. An arrangement according to claim 9, wherein the length of the notching sleeve preferably extends in a range of 120 mm to 150 mm and the diameter amounts to approximately 50 mm and the length of the splicing sleeve preferably lies in the order of magnitude of 250 mm.
20. An arrangement according to claim 9, wherein the length of the second region is preferably 100 mm.
21. An arrangement according to claim 9, wherein every light waveguide splice is provided with a known splice protector.
22. An arrangement according to claim 9, which includes a splicing cassette for accepting the lead splices and excess length of the spliced light waveguides, said splicing cassette simultaneously forming a force-transmitting function and is secured to the respective ends of the light waveguide cladding.
23. An arrangement according to claim 9, wherein an adaptor connection is preferably brought into union with the copper leads of the light waveguides which are arranged in the splice sleeve.
24. An arrangement according to claim 9, wherein the light waveguide cable is filled with a known filling agent and the ends of the cable in each of the sleeves are provided with terminating elements to hold the filling agent in said cable.
25. An arrangement according to claim 24, wherein each of the sleeves is also filled with a filling agent.
26. An arrangement according to claim 9, wherein the light waveguide cables are monitored with compressed air and the arrangement includes valve means for engaging the cable adjacent each of the openings in the notching and splicing sleeve.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4226857.5 | 1992-08-13 | ||
| DE4226857 | 1992-08-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2103832A1 true CA2103832A1 (en) | 1994-02-14 |
Family
ID=6465503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002103832A Abandoned CA2103832A1 (en) | 1992-08-13 | 1993-08-11 | Method and apparatus for forming a branch connection |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0584600A1 (en) |
| AU (1) | AU4460993A (en) |
| CA (1) | CA2103832A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008127852A1 (en) * | 2007-04-12 | 2008-10-23 | Adc Telecommunications, Inc. | Fiber optic cable breakout configuration with tensile reinforcement |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19612888A1 (en) * | 1996-03-30 | 1997-10-02 | Rehau Ag & Co | Process for the production of cable branches |
| SE506463C2 (en) * | 1996-05-07 | 1997-12-22 | Ericsson Telefon Ab L M | Device and method for cable branches |
| DE939914T1 (en) | 1996-11-20 | 2000-09-14 | Naamloze Vennootschap Raychem S.A., Kessel-Lo | ORGANIZATION DEVICE FOR OPTICAL FIBERS |
| DE19756954C1 (en) * | 1997-12-20 | 1999-06-24 | Rehau Ag & Co | Cable branch point actuatable formation method for optical fiber cable |
| CN113721322B (en) * | 2021-07-31 | 2024-01-23 | 鼎熙国讯科技有限公司 | Optical fiber equipment for network laying site construction |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60169815A (en) * | 1984-02-13 | 1985-09-03 | Dainichi Nippon Cables Ltd | Connection end part of cable with optical fiber |
| DE3630659A1 (en) * | 1986-09-09 | 1988-03-17 | Philips Patentverwaltung | BRANCH FOR A MULTIPLE FIBER OPTICAL CABLE AND METHOD FOR THE PRODUCTION THEREOF |
| JP2830032B2 (en) * | 1989-04-20 | 1998-12-02 | 住友電気工業株式会社 | Optical fiber cable branching method and optical fiber cable |
-
1993
- 1993-08-04 EP EP93112515A patent/EP0584600A1/en not_active Withdrawn
- 1993-08-11 CA CA002103832A patent/CA2103832A1/en not_active Abandoned
- 1993-08-12 AU AU44609/93A patent/AU4460993A/en not_active Abandoned
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008127852A1 (en) * | 2007-04-12 | 2008-10-23 | Adc Telecommunications, Inc. | Fiber optic cable breakout configuration with tensile reinforcement |
Also Published As
| Publication number | Publication date |
|---|---|
| AU4460993A (en) | 1994-02-17 |
| EP0584600A1 (en) | 1994-03-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |