WO2022236024A1 - Intégration de services point à point à indexation - Google Patents

Intégration de services point à point à indexation Download PDF

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Publication number
WO2022236024A1
WO2022236024A1 PCT/US2022/028031 US2022028031W WO2022236024A1 WO 2022236024 A1 WO2022236024 A1 WO 2022236024A1 US 2022028031 W US2022028031 W US 2022028031W WO 2022236024 A1 WO2022236024 A1 WO 2022236024A1
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WO
WIPO (PCT)
Prior art keywords
fiber
fibers
indexing
terminal
optical
Prior art date
Application number
PCT/US2022/028031
Other languages
English (en)
Inventor
Paul David HUBBARD
Dean R. PETTIGREW
Sanjay KAWALE
Dennata RADIANSARI
Original Assignee
Commscope Technologies Llc
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 Commscope Technologies Llc filed Critical Commscope Technologies Llc
Publication of WO2022236024A1 publication Critical patent/WO2022236024A1/fr

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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
    • G02B6/4439—Auxiliary devices
    • G02B6/444—Systems or boxes with surplus lengths
    • G02B6/4441—Boxes
    • G02B6/445—Boxes with lateral pivoting cover
    • 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
    • G02B6/444—Systems or boxes with surplus lengths
    • G02B6/44528—Patch-cords; Connector arrangements in the system or in the box
    • 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
    • G02B6/44775—Cable seals e.g. feed-through
    • 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
    • G02B6/44785—Cable clamps

Definitions

  • Optical networks are becoming increasingly more prevalent in part because service providers want to deliver high bandwidth communication capabilities to customers.
  • optical fibers can be dropped at various terminals along a network while a remainder of the fibers are indexed between terminals. Indexing provides an active optical fiber at a consistent fiber position within an input port, thereby simplifying terminal design and configuration. Improvements are desired.
  • the network terminals include at least one indexing terminal and at least one PtP terminal.
  • inventive aspects can relate to individual features and to combinations of features. It is to be understood that both the forgoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the broad inventive concepts upon which the embodiments disclosed herein are based.
  • FIG. 1 is schematic diagram of an example terminal suitable for use in a fiber distribution network, the terminal being configured in accordance with the principles of the present disclosure
  • FIG. 2 is a schematic diagram of the terminal of FIG. 1 configured as an indexing terminal
  • FIG. 3 is a schematic diagram of the terminal of FIG. 1 configured as a PtP terminal;
  • FIG. 4 shows another example of an indexing terminal including at least one optical splitter
  • FIG. 5 shows two indexing terminals chained together
  • FIG. 6 shows another example of a PtP terminal
  • FIG. 7 shows a chain of PtP and indexing terminals
  • FIG. 8 shows the fiber routing for the chain of FIG. 7
  • FIG. 9 shows the fiber routing for the chain of FIG. 7 in a bidirectional architecture
  • FIG. 10 shows a fiber distribution network using both indexing and PtP terminals
  • FIG. 11 shows the fiber distribution network of FIG. 10 except the PtP drop fibers are separated between multiple PtP terminals within the network;
  • FIG. 12 shows a fiber distribution network including multiple chains of terminals where one or more PtP drop fibers of the first chain feed the second chain;
  • FIG. 13 shows a fiber distribution network where a chain of indexing terminals can be extended using a PtP terminal
  • FIG. 14 illustrates an example enclosure suitable for use as any of the terminals described herein, the enclosure including a movable base pivoted to an open position;
  • FIG. 15 illustrates the enclosure of FIG. 14 with a movable base pivoted to a closed position;
  • FIG. 16 illustrates another example enclosure suitable for use as any of the terminals described herein;
  • FIG. 17 schematically depicts another fiber distribution system in accordance with the principles of the present disclosure.
  • FIG. 18 schematically depicts an extended embodiment of the fiber distribution system of FIG. 17;
  • FIG. 19 schematically depicts an indexing terminal that can be used in the system of FIGS. 17 and 18;
  • FIG. 20 schematically depicts another indexing terminal that can be used in the fiber distribution system of FIGS. 17 and 18;
  • FIG. 21 schematically depicts a forward feed source that can be used in the fiber distribution system of FIGS. 17 and 18;
  • FIG. 22 schematically depicts a reverse-feed terminal that can be used in the fiber distribution system of FIGS. 17 and 18;
  • FIG. 23 schematically depicts the reverse-feed terminal of FIG. 22 further including fiber distribution chain extension functionality
  • FIG. 24 depicts a tap architecture in accordance with the principles of the present disclosure
  • FIG. 25 depicts a tap terminal in accordance with the principles of the present disclosure at day one where at least one connectorized tap output is reserved from later use;
  • FIG. 26 depicts a tap terminal housing in accordance with the principles of the present disclosure with an interior panel pivoted to an open position;
  • FIG. 27 depicts the tap terminal housing of FIG. 26 with the interior panel pivoted to a closed position.
  • the present disclosure is directed to a network distribution system and various terminals 100 for use therein.
  • the terminals 100 of the network distribution system can be connected by a common style of cable 102.
  • each of the cables 102 have a common number of optical fibers (e.g., four, six, ten, twelve, sixteen, twenty-four, thirty-six, forty-eight, etc.).
  • the terminals 100 include an indexing terminal 150 (e.g., see FIG. 2) and a PtP terminal 152 (e.g., see FIG.
  • the terminals 100 and cables 102 are configured so that the terminals 100 can be arranged in any desired sequence within the network.
  • the optical fibers 110 carried by the cables 102 between the terminals 100 include indexing optical fibers 120 and PtP fibers 130 disposed within a jacket 115.
  • the indexing optical fibers 120 and PtP fibers 130 are terminated at common multi -fiber ferrules 114, 118 of multi-fiber connectors 112, 116 at opposite ends of the cable 102. Accordingly, the same types of cables 102 can be routed between the terminals 100 regardless of whether indexing terminals 150, PtP terminals 152, or a combination of the two is used.
  • Optical fibers of multiple cables 102 are optically coupled together at the terminals 100 to form optical lines extending along the network.
  • FIG. 1 illustrates an example terminal 100 configured in accordance with the principles of the present disclosure.
  • the terminal 100 includes a body 104 (e.g., a terminal housing that forms an enclosure) defining an interior.
  • a multi -fiber adapter 106 is disposed at the body 104 and defines oppositely facing first and second ports.
  • a cable 102 includes multiple optical fibers 110 extending between first ends and second ends.
  • the first ends of the optical fibers 110 are disposed at a first multi- fiber connector 112.
  • the first multi-fiber connector 112 is disposed outside of the body 104 and is spaced from the body 104 by a section of the cable 102.
  • the first multi -fiber connector 112 includes a first multi-fiber ferrule 114 that holds the optical fibers 110 in a sequence of fiber positions P1-P6.
  • the first multi-fiber ferrule 114 defines six fiber positions.
  • the first multi-fiber ferrule 114 may define a greater or lesser number of positions (e.g., two, three, four, eight, ten, twelve, sixteen, twenty-four, thirty-six, etc.).
  • the body 104 of the terminal 100 includes a breakout region 140 at which the second end of one or more of the optical fibers 110 is separated from a remainder of the optical fibers 110.
  • the optical fibers 110 having the separated out second ends are referred to herein as drop fibers.
  • the second ends of the remainder of the optical fibers 110 extend to a second multi -fiber ferrule 118 at a second connector 116.
  • the second multi-fiber ferrule 118 also defines a sequence of positions P1-P6.
  • each drop fiber is terminated at a drop connector 142.
  • the drop connector 142 is a single-fiber optical connector (e.g., an LC connector, an SC connector, etc.).
  • the drop connector 142 is a multi- fiber connector (e.g., a duplex connector LC or SC connector, an MDC connector, an MPO connector, etc.) that terminates the second end of two or more of the drop fibers 110.
  • the drop connector 142 is plugged into a port of a drop cable interface (e.g., an optical adapter) 144.
  • the internal port aligns with an externally accessible port. In other examples, the internal port aligns with another internally accessible port.
  • the drop connector 142 is disposed external of the body 104 (see dashed lines in FIG. 1). In some such examples, the drop fiber extends through the cable port 108. In other such examples, the drop fiber extends through a respective drop cable port 146.
  • the terminal 100 is configured to optically couple together non-hardened optical connectors.
  • the multi -fiber adapter 106 and the drop cable interface 144 are disposed within the interior of the body 104 so that oppositely facing first and second ports are accessible within the body 104 (e.g., see FIG. 1).
  • the body 104 defines a cable port 108 through which a cable 102 extends so that the second connector 116 can be plugged into the first port of the multi- fiber adapter 106.
  • the body 104 may define an additional drop cable port 144 to receive either the drop fiber 110 or a mating drop cable.
  • the body 104 may be environmentally sealed to protect the connections within. In other examples, the body 104 is intended for indoor use and is not environmentally sealed.
  • the terminal 100 is pre-cabled so that the second multi-fiber connector 116 is received at the first port of the multi -fiber adapter 106, a jacketed portion of the cable 102 extends through the cable port 108, and the first multi- fiber connector 112 terminates a stub length of the cable 102 outside of the body 104.
  • Pre cabling the terminal 100 i.e., at the factory or other manufacturing facility
  • the body 104 may simply be mounted to a desired location and the stub length of cable 102 is routed to the previous terminal 100 in the network.
  • the terminal 100 is installed without the cable 102 and the cable 102 is subsequently added to the terminal 102 in the field.
  • the terminal 100 is configured to optically couple together hardened optical connectors.
  • the multi -fiber adapter 106 replaces the cable port 108 so that the first port is accessible at an exterior of the body 104 and the second port is accessible at the interior of the body 104.
  • a second multi -fiber adapter would also be disposed so that a respective first port is accessible at an exterior of the body 104 and a respective second port is accessible at the interior of the body 104.
  • Internal fibers within the terminal 100 would connect between the first and second multi- fiber adapters.
  • the drop line would be taken from the internal fibers.
  • the drop connector 142 would either be plugged into an internal port of a hardened adapter 144 or would terminate a stub length extending from a sealed cable port 146.
  • Hardened optical connection interfaces such as hardened connectors and hardened optical adapters, are configured to mate together to form an environmental seal.
  • Some non-limiting example ruggedized optical connector interfaces suitable for use with an indexing terminal are disclosed in U.S. Patent Nos. 7,744,288, 7,762,726, 7,744,286, 7,942,590, and 7,959,361, the disclosures of which are hereby incorporated herein by reference.
  • hardened optical connection interfaces can include environmental seals for sealing the connectors in outside environments.
  • Hardened optical connection interfaces can include fasteners such as threaded or bayonet-style fasteners for providing robust connector-to connector mechanical connections.
  • Hardened optical connection interfaces can include male connectors on cables, female connectors on cables, ports/adapters on housings and other structures.
  • terminals 100 configured to optically couple together non-hardened optical connectors. It will be understood, however, that the terminals 100 can be sold empty. It also will be understood that the terminals 100 may couple together hardened optical connectors through internal optical circuitry that implements the below breakouts and fiber routing.
  • FIG. 2 illustrates one example implementation of an indexing terminal 150 configured in accordance with the principles of the present disclosure.
  • the indexing terminal 150 Within the indexing terminal 150, one or more of the optical lines formed by the indexing fibers 120 are dropped. In certain implementations, none of the PtP fibers 130 are dropped.
  • four indexing fibers 120 and two PtP fibers 130 are routed into the body 104 of the terminal 100.
  • Two of the indexing fibers 120 are drop fibers 122 terminated by drop connectors 142.
  • the remaining indexing fibers 120 are pass-through fibers 124 that extend to the second multi -fiber connector 116.
  • the pass-through fibers 124 are indexed to fill the empty fiber positions in the sequence.
  • the pass-through fibers 124 have first ends disposed at positions P3, P4 at the first multi fiber ferrule 114 and second ends indexed to positions PI, P2, respectively, at the second multi-fiber ferrule 118.
  • the PtP fibers 130 also extend to the second multi-fiber connector 116. However, the PtP fibers 130 are not indexed between the first and second multi -fiber ferrules 114, 118.
  • FIG. 3 illustrates one example implementation of a PtP terminal 152 configured in accordance with the principles of the present disclosure.
  • a PtP terminal 152 Within the PtP terminal 152, one or more of the optical lines formed by the PtP fibers 130 are dropped.
  • none of the indexing fibers 120 are dropped.
  • four indexing fibers 120 and two PtP fibers 130 are routed into the body 104 of the terminal 100.
  • One of the PtP fibers 130 is a drop fiber 132 terminated by a drop connector 142.
  • the remaining PtP fiber 130 is a pass-through fiber 134 that extends to the second multi -fiber connector 116.
  • the indexing fibers 120 also extend to the second multi -fiber connector 116. In the example shown, all indexing fibers 120 are pass through fibers 124.
  • the PtP fibers 130, 132 can have connectorized connection interfaces within the PtP terminal 152 for allowing portions of fibers 132, 134 routed from positions P5, P6 of the ferrule 114 to be selectively optically coupled to: a) portions of the fibers 132, 134 routed from positions P5, P6 of the ferrule 118 to provide pass-through functionality; or b) a drop port 145 to provide line dropping functionality for connection to a drop line 135 that may be optically connected to a subscriber location.
  • the connectorized connection interfaces can include fiber optic connectors 142 (e.g., single fiber optical connectors) terminating the fiber portions that are coupled together via structures such as fiber optic adapters 144.
  • FIG. 4 is a schematic illustration of an example indexing terminal 150 where the number of lines used to show the optical fibers 110 is reduced for clarity.
  • the cable 102 is shown extending into the terminal 150 through the cable port 108.
  • a first drop fiber 122A is terminated at a first drop connector 142A
  • a second drop fiber 122B is terminated at a second drop connector 142B
  • the remainder of the fibers 110 i.e., pass-through fibers 124 and PtP fibers 130
  • communications component e.g., an optical splitter such as a power splitter, tap, or wave division multiplexer
  • the drop connector 142A is connected to an input 162 (e.g., an external port) of a splitter module 160.
  • the splitter module 160 splits optical signals carried over the drop fiber 122A onto two or more splitter outputs 164.
  • the splitter 160 is a 1x8 splitter. In other examples, however, the splitter 160 can have a split ratio of 1x2,
  • the splitter 160 has an even split ration (e.g., the same percentage of the signal is applied to each output).
  • the splitter 160 has an asymmetric or uneven split ratio.
  • the fibers 110 are pre-cabled within the terminal 100. Accordingly, cables and/or communications components can be subsequently added.
  • the splitter 160 is coupled to the first drop connector 122A while the second drop connector 142B is not yet connected to anything.
  • an additional splitter 160 (see dashed lines) or other component can be subsequently added within the terminal body 104 and connected to the second drop connector 142B.
  • the additional splitter 160 can be pre-installed and connected to the second drop connector 122B at the factory.
  • both splitters 160 can be added in the field after installation of the terminal 100.
  • FIG. 5 shows how two or more indexing terminals 150 can be daisy- chained together.
  • a second indexing terminal 150B is chained to a first indexing terminal 150A.
  • the first multi-fiber connector 112B of the second indexing terminal 150B is routed to the second port of the multi -fiber adapter 106 within the first indexing terminal 150A to be optically coupled to the second multi -fiber connector 116A of the first indexing terminal 150A.
  • the cable 102B of the second indexing terminal 150B extends through a cable port 108A of the first indexing terminal 150A.
  • the cable 102B extends through the same cable port through which the cable 102A of the first indexing terminal 150A extends. In other examples, the cable 102B extends through a separate cable port.
  • the splitter 160 of the first indexing terminal 150A receives signals from the indexing fiber 120 having a first end at fiber position PI of the multi-fiber ferrule at the connector 112A.
  • the indexing fibers 120 that pass-through the first terminal 150A are indexed to positions PI, P2 of the second cable 102B.
  • the splitter 160 of the second indexing terminal 15 OB receives signals from the indexing fiber 120 having a first end at fiber position P3 of the multi -fiber ferrule at the connector 112A.
  • the PtP fibers 130 remain at fiber positions P5, P6, even at the multi-fiber ferrule of the connector 116B
  • FIG. 6 is a schematic illustration of an example PtP terminal 152 where the number of lines used to show the optical fibers 110 is reduced for clarity.
  • the cable 102 is shown extending into the terminal 152 through the cable port 108.
  • a drop fiber 132 is terminated at a drop connector 142 and the remainder of the fibers 110 (i.e., indexing fibers 120 and pass-through PtP fibers 134) are terminated by the second multi-fiber connector 116.
  • FIGS. 7 and 8 show an example PtP terminal 152 inserted between the indexing terminals 150A, 150B of FIG. 5.
  • the terminal 100 in FIGS. 7 and 8 are referred to as terminals 100A, 100B, lOOC where terminal 100B is downstream of terminal 100A and terminal lOOC is downstream of terminal 100B.
  • the first and third terminals 100A, lOOC are indexing terminals 150 and the second terminal 100B is a PtP terminal 152.
  • the first multi-fiber connector 112B of the second terminal 100B is received at the second port of the adapter 106 of the first terminal 100A and the first multi- fiber connector 112C of the third terminal lOOC is received at the second port of the adapter 106 of the second terminal 100B.
  • the indexing lines 120 starting at fiber positions PI, P2 of the first connector 112A of the first cable 102A are dropped at the first terminal 100A.
  • the indexing lines 120 starting at positions P3, P4 of the first connector 112A are indexed to fiber positions PI, P2 at the first terminal 100A. Accordingly, signals carried over the indexing fibers 120 starting at positions P3, P4 of the first cable 102A are carried over the indexing fibers starting at positions PI, P2 of the second cable 102B.
  • the PtP lines 130 starting at positions P5, P6 of the first connector 112A remain at fiber positions P5, P6 when carried over to the second cable 102B.
  • the PtP lines 130 are dropped.
  • all of the PtP fibers 130 are dropped, so no fibers are routed to the second multi- fiber connector 116B.
  • the fiber distribution system is bidirectional as will be discussed in more detail herein and so additional fibers may be terminated by the second multi-fiber connector 116B.
  • the indexing fibers 120 are passed through the second terminal 100B. Accordingly, the indexing fiber 120 remain at fiber positions PI, P2 when carried over to the third cable 102C. These two indexing lines are shown dropped at the third terminal lOOC.
  • FIG. 9 illustrates a bidirectional architecture in which additional drop lines may extend from the fiber positions of the second multi -fiber connectors 116 that would otherwise be left empty.
  • first signals are sent from a first signal source along the optical lines in a first signal direction D1 and second signals are sent from a second signal source along the optical lines in a second signal direction D2. Accordingly, dropping and indexing fibers at the terminals 100 does not result in dead lines through the network. Rather, these lines can be utilized to provide additional services.
  • additional drop fibers 122, 132 may extend from the fiber positions P3, P4 of the second connector 116A of the first cable 102A, from fiber positions P5, P6 of the second connector 116B of the second cable 102B, and from fiber positions P3, P4 of the second connector 116C of the third cable 102C. Signals can be supplied to these positions and additional drop fibers 122, 132 from a second signal source fed to the third terminal lOOC by a fourth cable 102D.
  • P4 of the fourth cable 102D are dropped at the third terminal lOOC.
  • Signals carried over the fibers having first ends at positions PI, P2 of the fourth cable 102D are indexed to positions P3, P4 of the third cable 102B, pass-through the second terminal 100B, and are dropped at the first terminal 100A.
  • Signals carried over the fibers having first ends at positions P5, P6 of the fourth cable 102D pass to the fibers at fiber positions P5, P6 of the third cable 102C and onto the additional drop fibers 132 at the second terminal 100B.
  • FIGS. 10-13 illustrate various implementations of fiber distribution systems 170 using the indexing terminals 150 and PtP terminals 152.
  • the cables between the terminals 100 have twelve fibers — eight indexing fibers 120 and four PtP fibers 130.
  • the fiber distribution systems 170 include a feeder cable F optically coupled from a signal source (e.g., a central office, a data center, etc.).
  • the feeder or backbone cable F includes 48-72 fibers.
  • the cable F can have a greater or lesser number of fibers (e.g., two, twelve, sixteen, twenty-four, ninety-six, 144, 256, 512, 1024, etc.).
  • the feeder cable F is routed to a splitter node 172 at which one or more fibers are broken out from the cable F. A remainder of the cable F can be routed to another splitter node or elsewhere in the network.
  • a first fiber is broken out from the feeder cable F and input at a splitter 174.
  • Outputs 176 of the splitter 174 are terminated at a common multi-fiber connector 175.
  • One or more additional fibers may be broken out from the feeder cable F and terminated at the multi -fiber connector 175 while bypassing the splitter 174.
  • the first multi-fiber connector 112 of one of the terminals 100 may be mated or interfaced with the multi-fiber connector 175. Accordingly, both split and unsplit signals may be carried over the same cable 102 of the terminal 100.
  • the term “unsplit” refers to the bypassing of splitter 174 at splitter node 172, which results in the unsplit signals have more power (or more wavelengths) than the split signals.
  • the split signals are carried over the indexing fibers 120 and the unsplit signals are carried over the PtP fibers 130.
  • a cellular transceiver 182 (e.g., for a small cell network) may be coupled to two of the dropped PtP fibers 132 — one for transmitted signals and one for received signals via one or more cables 180.
  • a CCTV component e.g., a security camera
  • a component 186 for providing a wireless backhaul service, an enterprise service, or other such services may be coupled to one or more of the dropped PtP fibers 132.
  • Dropped indexing fibers 122 tend to be coupled to fiber to the home (FttH) components.
  • FIG. 11 illustrates another example fiber distribution system 170 having more than one PtP 152 terminal. Accordingly, some of the P2P lines 130 at the first PtP terminal 152A are passed through to the second PtP terminal 152B. In certain examples, the PtP lines 130 may be passed through one or more of the indexing terminal 150 before reaching the second PtP terminal 152B. In other examples, additional PtP terminals 152 may be provided (e.g., if only one PtP fiber is dropped per terminal, if the cable includes additional PtP fibers, etc.).
  • FIG. 12 illustrates another example fiber distribution system 170 in which a second chain 192 of terminal 100, 150, 152 can be supported by one or more of the dropped PtP fibers 132 in a first chain 190.
  • the first chain 190 includes a plurality of terminals 100 extending from a first splitter node 170A as previously discussed.
  • a second chain 192 including a second splitter node 170B can be coupled to one of the dropped PtP fibers 132 at a PtP terminal 152 of the first chain 190.
  • the dropped PtP line 132 from the first chain 190 is split at the second splitter node 170B to form a new set of indexing fibers of the second chain 192.
  • one or more additional dropped PtP lines 132 can be combined with the new indexing fibers (e.g., at the second splitter node 170B) to form PtP lines 130 of the second chain 192.
  • FIG. 13 illustrates another example fiber distribution system 170 in which a PtP terminal 152 can be used to extend the chain of indexing terminals 150.
  • a PtP terminal 152 can be used to extend the chain of indexing terminals 150.
  • an additional splitter 196 e.g., a power splitter, a wave division multiplexer, a passive splitter, an active splitter, etc.
  • splitting the signals at the PtP terminal 152 may significantly increase (e.g., double triple, quadruple, etc.) the number of indexing terminals 150 that can be attached in the network 170.
  • a second chain of indexing terminals 150 is fed from a first PtP drop fiber 132.
  • the other PtP drop fibers 152 are passed through.
  • splitters 196 also may be disposed at additional PtP terminals 152 throughout the network to further increase the number of split signal fibers that can be routed to end users.
  • FIGS. 14 and 15 illustrate an example enclosure 330 suitable for use as a body 104 of a terminal 100 (e.g., an indexing terminal 150, a PtP terminal 152, etc.).
  • the enclosure 330 includes a housing 331 defining an interior.
  • the housing 331 is re-enterable.
  • the housing 331 is suitable for use with various configurations of cable arrangements 102.
  • the housing 331 defines a cable port 333 extending between an exterior of the housing and the interior of the housing 331.
  • the cable port 333 could form cable port 108 and/or drop cable port 146 of FIG. 1.
  • a sealing arrangement is disposed at the cable port 333 to environmentally seal the interior of the housing 331.
  • the sealing arrangement includes a gasket (e.g., an O-ring, a gel-seal member, a foam block, etc.) through which the cable passes.
  • the cables 102, 122, 132 are movable (e.g., slidable) through the cable port 333A and sealing arrangement. In other implementations, the cables 102, 122, 132 are fixed at the cable port 333A.
  • Optical lines 303 enter the housing 331, 331A through the cable port 333A such that a first multi-fiber connector 304 (e.g., connector 112) is disposed external of the housing 331, 331A and a second multi-fiber connector 305 (e.g., connector 116) is disposed within the interior of the housing 331, 331A.
  • Single- fiber connectors e.g., drop connectors 142 also are disposed at the housing 331, 331A.
  • external ports of optical connector interfaces receiving the connectors 304, 142 are hardened so that the interior 332 of the housing 331, 331A remains environmentally sealed regardless of whether or not a plug connector is received at the external ports of the optical connection interfaces. In other examples, all of the connections are made within the interior of the housing 331, 331 A.
  • the housing 331, 331A defines an optical connection interface location 335A.
  • the connection interface location 335A is not hardened and includes an optical adapter (e.g., multi-fiber adapter 106) having oppositely facing ports disposed within the interior 332 of the housing 331, 331A.
  • the connection interface location 335A is a hardened connection interface location 335A and has an inner port 336A accessible from within the interior 332 of the housing 331 and an outer port 337A accessible from an exterior of the housing 331.
  • the second multi-fiber connector 305 e.g., multi-fiber connector 116 of FIG. 1 is plugged into one of the ports (e.g., the inner port 336) of the optical adapter 335.
  • the housing 331, 33 also defines a second optical connection interface location 335B at which the drop connectors 142 connect to drop fibers/cables routed to the housing 331, 331A.
  • the second optical connection interface location 335B is not hardened and is located within the interior 332 of the housing 331, 331A.
  • One or more adapters 144 are disposed at the second optical connection interface location 335B.
  • the housing 331 also defines a cable access region 338A at which optical fibers (e.g., subscriber lines 180) can enter the housing 331 to connect to the drop connectors 142.
  • optical fibers e.g., subscriber lines 180
  • one or more optical adapters corresponding to the single-fiber connectors 306 are disposed within the interior of the housing 331.
  • the cable port 333 A, the connection interface location 335A, and the cable access region 338A are defined at the same side of the housing. In other implementations, one or more of the cable port 333A, the connection interface location 335 A, and the cable access region 338 A can be defined at a different side of the housing 331.
  • a movable base 350A (e.g., a bulkhead, tray, drawer, or other such carrying structure) is disposed within the housing 331.
  • the base 350A pivots relative to the housing 331.
  • the base 350A slides relative to the housing 331.
  • the base 350A is removable relative to the housing 331.
  • the second optical connection interface location 335B is carried by the movable base 350A.
  • the drop connectors 142 are mounted to the base 350A.
  • the splitter arrangement is mounted to the base 350A.
  • a splice 309 between the splitter arrangement 307 and the dropped optical line 303a (e.g., dropped line 122, 132) is mounted to the base 350A.
  • additional splices also can be mounted to the base 350.
  • the enclosure 330A includes a housing 331A defining an access opening 361 that can be selectively closed by a cover (or door) 360.
  • the cover 360 is releasably lockable to the housing 331A in the closed position.
  • a fastener or lock can be inserted through lock retention members 363, 364 defined by the housing 331 and cover 360.
  • the cover 360 can be latched or otherwise secured to the housing 331.
  • a gasket 362 or other sealing member forms an environmental seal between the cover 360 and the housing 331 when the cover 360 is closed.
  • the gasket 362 may extend around a perimeter of the access opening 361.
  • a ruggedized optical adapter 335A, a sealed cable port 333A, and another sealed cable port 338A are disposed in a bottom wall of the housing 331.
  • One or more cable anchors 365 may be disposed within the housing 331 to secure the cable.
  • a cable anchor 365 may be disposed at the sealed cable port 333 to axially hold the cable at a fixed location relative to the housing 331.
  • a pivoting panel or tray 350A is disposed within the housing 331.
  • the panel 350A pivots between a first position and a second position. When in the first position, the panel 350A is disposed within the housing 331. When in the second position, the panel 350A extends outwardly through the access opening 361.
  • the panel 350A has a splice region.
  • the panel 350A has a first splice region 351 for storing the splices (e.g., mass fusion splices) 308 between the optical fibers 321, 322 forming the indexed optical lines 303b.
  • the panel 350A also includes a second splice region 352 for storing the splices 309 between the optical fibers of the dropped optical line(s) 303a.
  • the panel 350A has a storage region.
  • the panel 350A has a first storage region 353 for storing excess length of the indexed optical lines 303b.
  • the panel 350A also has a second storage region 354 for storing excess length of the dropped optical line(s) 303a.
  • the second storage region 354 also stores excess length of the splitter output lines 307b.
  • the panel 350A holds the single-fiber connectors 306.
  • the single-fiber connectors 306 may be mounted to an opposite side of the panel 350A from the splice region.
  • the single- fiber connectors 306 may be mounted to an opposite side of the panel 350A from the storage region.
  • the dropped optical line(s) 303a and/or splitter output lines 307b are routed from between the sides of the panel 350A along the hinge axis.
  • FIG. 16 illustrates an example enclosure 340.
  • the enclosure 340 includes a housing 341 defining an access opening 371 that can be selectively closed by a cover (or door) 370.
  • the cover 370 is releasably lockable to the housing 341 in the closed position.
  • latches 373 on the housing 331A can snap-fit over the cover 370.
  • a gasket 372 or other sealing member forms an environmental seal between the cover 370 and the housing 341 when the cover 370 is closed.
  • the gasket 372 may extend around a perimeter of the access opening 371.
  • a sealed cable access region (e.g. cable port 108 and/or drop cable port 146 of FIG. 1) is disposed at a bottom wall of the housing 341.
  • the sealed cable access region includes one or more sealing members 349 (e.g., gel blocks, foam blocks, rubber gaskets, etc.) that environmentally seal around one or more cables entering the enclosure 340.
  • all of the cables pass through the same cable access region 348 between opposing gel blocks.
  • each cable may enter the enclosure 340A through a respective sealed cable port.
  • a pivoting tray 350B is disposed within the housing 341.
  • the panel 350B pivots between a first position and a second position. When in the first position, the panel 350B is disposed within the housing 341. When in the second position, the panel 350B extends outwardly through the access opening 371.
  • the panel 350B holds the drop connectors 142, 306.
  • the panel 350B includes a termination region 355 at which one or more optical adapters (e.g., adapter 106 and/or adapter(s) 144) are mounted.
  • the single-fiber connectors 142, 306 can be held at first ports of the optical adapters.
  • Second ports of the optical adapters face the cable access region 348.
  • Optical fibers e.g., subscriber lines
  • the panel 350B also has a splice region.
  • the panel 350B may have a first splice region for storing the splices (e.g., mass fusion splices) 308 between the optical fibers 321, 322 forming the indexed optical lines 303b.
  • the panel 350B also may include a second splice region for storing the splices 309 between the optical fibers of the dropped optical line(s) 303a.
  • the splice region may be mounted to an opposite side of the panel 350A from the single-fiber connectors 306.
  • the panel 350B has a storage region.
  • the panel 350B may have a first storage region for storing excess length of the indexed optical lines 303b.
  • the panel 350B also may have a second storage region for storing excess length of the dropped optical line(s) 303a.
  • the second storage region also may store excess length of the splitter output lines 307b.
  • the storage region may be mounted to an opposite side of the panel 350B from the single-fiber connectors 306.
  • a port such as a drop port can be formed by a connector receiving portion of a fiber optic adapter.
  • a typical fiber optic adapter includes two opposite ports for receiving fiber optic connectors such that the fiber optic connectors are optically connected when inserted in the ports.
  • at least one of the ports of a fiber optic adapter can be hardened.
  • the adapter can be mounted in an exterior wall of a terminal such that the hardened port is accessible from outside the terminal.
  • both of the ports of a fiber optic adapter can be non-hardened and the adapter can be mounted within a terminal such that both ports are only accessible from inside the terminal when the terminal is open.
  • a drop cable may be routed into the terminal through a cable sealing interface (e.g., a sealing block) that may include one or more drop cable ports, and the drop cable can be plugged into one of the fiber optic adapter ports within the terminal to connect the drop cable to a corresponding optical fiber from a service provider.
  • a port can be defined by a connector such as a hardened connector mounted at the end of a stub cable extending from a terminal.
  • FIG. 17 schematically depicts a fiber distribution system 800 in accordance with the principles of the present disclosure.
  • the fiber distribution system 800 includes a first plurality of indexing terminals 150A-150E that are daisy chained together to form a first chain 802 of indexing terminals.
  • the fiber distribution system 800 also includes a forward feed source 804 (e.g., a fiber distribution cabinet, terminal, fiber distribution hub, or other type of telecommunications enclosure) at a first end 806 of the first chain 802 and a first reverse-feed terminal 808 at a second end 810 of the first chain 802.
  • the different modules e.g., the indexing terminals 150, the forward feed source 804 and the first reverse-feed terminal 808) of the fiber distribution system 800 are shown schematically coupled together by connection interfaces 812.
  • each schematically depicted connection interface 812 may include a multi -fiber optical cable routed between the modules for allowing the modules to be installed at different locations (e.g., serving different subscriber locales) and may also include at least a pair of multi- fiber ferrules (e.g., MPO ferrules that may be integrated within MPO connectors) that are coupled together via a structure such as a multi-fiber optical adapter (e.g., an MPO adapter).
  • additional modules such as one or more of the point-to-point terminals 152 can be included in the first chain 802. It will be appreciated, that the various modules can be mixed and matched and positioned in different orders and arrangements to customize a given chain to meet the requirements of a service provider for a particular region in need of service.
  • each of the indexing terminals 150A-E includes a first multi-fiber connector 814 (e.g., a female MPO connector) including a first multi-fiber ferrule 816 (e.g., a female MPO ferrule having pin alignment openings for receiving pins of a male MPO ferrule to provide ferrule alignment) and a second multi- fiber connector 818 (e.g., a male MPO connector) having a second multi-fiber ferrule 820 (e.g., a male MPO ferrule).
  • the male and female connectors can be reversed so that the first multi-fiber connector is male and the second multi-fiber connector is female.
  • Connectors such as MPO connectors can be coupled together via a structure such as a multi-fiber adapter that mechanically secured to the connectors together.
  • a structure such as a multi-fiber adapter that mechanically secured to the connectors together.
  • the multi -fiber connectors 814, 818 can be hardened or non-hardened.
  • Hardened connectors can have integrated structures for coupling two of the connectors together without requiring an adapter.
  • Each of the indexing terminals 150A-E also includes optical fibers (e.g., forward-feed drop fibers 822, indexing fibers 824 and PtP fibers 826) all terminated at different fiber positions of the first multi-fiber ferrule 816.
  • the forward-feed drop fibers 822 provide optical service to forward-feed drop ports 828 either directly or through intermediate optical splitters 830 (e.g., passive optical power splitters or wavelength division multiplexers).
  • the indexing fibers 824 are routed between the first and second multi-fiber ferrules 816, 820 in an indexed manner such that the indexing fibers 824 are terminated at different fiber positions at the first multi -fiber ferrule 816 as compared to the second multi-fiber ferrule 820.
  • the PtP fibers 826 are routed between the first and second multi-fiber ferrules 816, 820 without being indexed (i.e. the PtP fibers 826 are terminated at the same fiber positions at the first multi -fiber ferrule 816 as compared to the second multi-fiber ferrule 820).
  • the indexing terminals 150A-E each also include at least one reverse-feed drop fiber 832 terminated at a fiber position of the second multi-fiber ferrule 820 vacated by the indexing fibers 824.
  • the reverse-feed drop fibers 832 can provide optical service to reverse-feed drop ports 834 either directly or through intermediate optical splitters 830.
  • expansion terminals 836 which may include passive optical splitters 830 can be optically connected to the reverse-feed drop ports 834. Outputs of the splitters can be routed to additional expansion drop ports.
  • the forward-feed source 804 is optically connected to the first end 806 of the first chain 802 of indexing terminals 150A-E.
  • the forward-feed source 804 includes a housing 840 containing a first forward-feed optical splitter 830A.
  • a forward-feed optical cable 842 including a jacket 843 containing a plurality of forward- feed optical fibers 846 is preferably routed into the housing 840.
  • One of the forward-feed optical fibers 846A is optically connected to an input of the first forward-feed optical splitter 830A.
  • forward-feed optical fibers 846B that are optically connected to the PtP fibers 826 of the daisy-chained indexing terminals 150A-E.
  • Outputs 846C of the first forward-feed optical splitter 830A are optically connected to the indexing fibers 824 and the forward-feed drop fibers 822 of the daisy-chained indexing terminals 150A-E.
  • the forward-feed optical cable 842 is preferably optically connected to a service provider location such as a central office.
  • the forward-feed source 804 can include one of the second multi-fiber connectors 818 for use in optically connecting the forward feed source 804 to the first end 806 of the chain of indexing terminals 150A-E.
  • Output fibers 846C (FIG. 21) of the first forward-feed optical splitter 830A and the forward feed PtP optical fibers 846B are terminated at the second multi -fiber ferrule 820 of the second multi -fiber connector 818.
  • a multi-fiber optical adapter 848 (e.g., an MPO adapter) is provided in the housing 840 for coupling the second multi-fiber connector 818 of the forward-feed source 804 to the first multi -fiber connector 814 of the indexing terminal 150A to optically couple the forward-feed source 804 to the chain of indexing terminals 150A-E.
  • the indexing terminals 150A-E also include fiber optic adapters 848 for coupling the terminals together in the daily chain.
  • the fiber optic adapters 848 can couple the first fiber optic connectors 814 of the terminals 150B-E to the second fiber optic connectors 818 of the respective immediately upstream terminals 150A-150D.
  • the first reverse-feed terminal 808 is optically connected to the second end 810 of the first chain 802 of indexing terminals 150A-E.
  • the first reverse-feed terminal 808 includes a housing 860 containing a first reverse-feed optical splitter 830B having a splitter input 862 optically connected to one of the forward- feed PtP fibers 846B by a chain of the PtP fibers 826 of the first plurality of indexing terminals 150A-150D and splitter outputs 864 optically connected to the reverse-feed drop fibers 832 of the first plurality of indexing terminals 150A-E by corresponding ones of the indexing fibers 824 of the first plurality of indexing terminals 150A-E.
  • the first reverse- feed terminal 808 includes one of the first multi-fiber connectors 814 having one of the first multi -fiber ferrule 816 for use in connecting the first reverse-feed terminal 808 to the second end 810 of the first chain 802 of indexing terminals.
  • the first multi-fiber connector of the terminal 808 can be referred to as a reverse-feed multi-fiber connector and its corresponding multi-fiber ferrule can be referred to as a reverse-feed multi-fiber ferrule.
  • the first reverse-feed the terminal 808 also includes a splitter input optical fiber 866 connected to one of the positions of the reverse-feed multi -fiber ferrule 816.
  • the splitter input optical fiber 866 is also optically connected to the splitter input 862 of the first reverse-feed optical splitter 830B.
  • the optical fiber 866 can also be referred to as a loop-back optical fiber.
  • the terminal 808 also includes reverse-feed fibers 868 connected to fiber positions of the reverse-feed multi-fiber ferrule 816 of the terminal 808 that are optically connected to the splitter outputs 864 of the reverse-feed optical splitter 830B.
  • the splitter input fiber 866 can be connectorized and can optically couple to a fiber 872 terminated at the ferrule 816 via a connectorized connection (e.g., mated single-fiber connectors such as SC or LC connectors aligned by a fiber optic adapter). Similar connectorized connections can be used for connecting output fibers of the reverse-feed splitters 830B to the reverse-feed fibers 868.
  • the fiber 872 can be one of a plurality of PtP fibers 874 terminated at fiber positions of the ferrule 816. The ends of the PtP fibers 874 opposite from the multi-fiber ferrule 816 can be connectorized with single-fiber connectors.
  • the first multi-fiber connector 814 of the first reverse-feed terminal 808 is coupled to the second multi -fiber connector 818 of the indexing terminal 150E such that the splitter input fiber 866 is optically connected to the chain of PtP fibers of the indexing terminals 150A-150E through the aligned ferrules 816, 820 of the coupled first and second multi-fiber connectors 814, 818.
  • the reverse-feed fibers 868 are optically connected to the corresponding indexing fibers 824 of the chained indexing terminals 150A-E through the aligned ferrules 816, 820 of the coupled first and second multi -fiber connectors 814, 818.
  • the indexing fibers 824 connect the reverse-feed fibers 868 to the reverse-feed drop fibers 832 to activate the drop fibers 832.
  • the first reverse-feed terminal 808 further includes one of the second multi-fiber connectors 818 having a corresponding one of the second multi-fiber ferrules 820.
  • the second multi -fiber connector 818 can be installed within one of the multi-fiber adapters 848 which may be located inside the housing 860 of the first reverse-feed terminal 808.
  • optical fibers 870 can be terminated at fiber positions of the multi-fiber ferrule 820 of the terminal 808. Ends of the optical fibers 870 opposite from the multi-fiber ferrule 820 can be connectorized (e.g., with a single-fiber connector such as an SC or LC connector).
  • the reverse-feed terminal 808 can also be configured to provide chain extension functionality (e.g., through the second multi-fiber connector 818).
  • a second forward-feed optical splitter 830C is provided in the housing 860 having splitter outputs 876 connected to fiber positions of the second multi- fiber ferrule 820 of the second multi-fiber connector 818 of the terminal 808.
  • a splitter input 878 of the forward-feed optical splitter 830C is optically coupled to one of the PtP fibers 874. Others of the PtP fibers 874 are connected to other fiber positions of the second multi-fiber ferrule 820 via the connectorized PtP fibers 870 having ends terminated at the positions of the second multi-fiber ferrule 820.
  • the second multi-fiber connector 818 of the reverse-feed terminal 808 can be used to provide optical connections with indexing fibers, forward feed drop fibers and PtP fibers of a second chain 882 of indexing terminals 150A-E to provide chain extension functionality.
  • a second reverse-feed terminal 884 can be installed at the downstream end of the second chain 882 to provide reverse-feed functionality for activating reverse-feed drop fibers of the second chain 882 of indexing terminals 150A-E. Referring to FIG.
  • the terminal 150 allows for deferred initial investment and future expansion in an indexing system by including future expansion drop line 122B having a pre-connectorized end 142B terminated by a fiber optic connector such as a non- hardened single fiber optical connector (e.g., an LC or SC fiber optic connector).
  • the future expansion drop line 122B is not connected to an optical component such as a passive optical splitter at the time of initial deployment. Instead, the pre-connectorized end 142B is stored (e.g., parked, stowed) within the terminal at the time of initial installation, and is available to be coupled to the input of a splitter 160 at a later date to expand the capacity and number of output drop lines of the terminal.
  • the pre-connectorized end 142B can be removed from storage and plugged into a port of an optical component in a plug-and-play manner to optically couple the optical component to the network and thus increase the capacity of the terminal 142A.
  • FIG. 24 depicts another network architecture 900 in accordance with the principles of the present disclosure for distributing optical service from a central location 902 (e.g., a central office or head end) including an optical line terminal 904.
  • the architecture can include an aggregation point 906 (e.g., a fiber distribution cabinet) optically connected to optical line terminal 904 of the central location 902 by a fiber optic cable 908.
  • the architecture 900 includes a chain of tap terminals 910 that extends outwardly from the aggregation point 906. As shown in FIG.
  • each of the tap terminals 910 includes an optical tap 912 having an input 914 optically connected to an input optical fiber 916, a pass-through output 918 optically connected to a pass-through optical pigtail 920 and one or more tap outputs 922 optically connected to tap optical pigtails 924.
  • Each optical tap 912 is configured to asymmetrically split an optical input signal such that a higher percentage of the signal power is directed from the input 914 to the pass-through output 918 than to each of the tap outputs 922.
  • the input optical fibers 916 can have connectorized ends connectorized by connectors 926, the pass-through optical pigtails 920 can include optical fibers with ends connectorized by connectors 928 and the tap optical pigtails 924 can include optical fibers having ends connectorized by connectors 930.
  • the connectors 926, 928 and 930 can include non-hardened, single fiber optical connectors such as SC connectors or LC connectors.
  • the input optical fiber 916 of the first tap terminal 910 in the chain can be optically coupled to one of the optical fibers of the fiber optic cable 908 at the aggregation point 906.
  • the input optical fibers 916 of subsequent tap terminals 910 in the chain can be optically coupled to the pass-through optical pigtails 920 of the immediately preceding tap terminals 910 (e.g., by non-hardened fiber optic adapters 932 that for coupling the connectors 926, 928) to optically link the terminals 910 together.
  • one or more of the tap optical pigtails 924 of the terminals can be stored within the terminal unconnected to another optical component such as a passive optical power splitter 934 to facilitate capacity expansion at a later date.
  • the another optical component may be omitted from the terminal during the initial deployment to defer cost (see FIG. 25).
  • an optical component e.g., optical power splitter 934
  • the pre-connectorized ends of the stored tap optical pigtails 924 can be removed from storage and plugged into a port of the optical component in a plug-and- play manner to optically couple the optical component to the network and thus increase the capacity of the terminals 910.
  • FIGS. 26 and 27 depict an example one of the tap terminals 910 including a housing 940.
  • the housing includes a base 942 and a front cover 944 pivotally connected to the base 942. When the front cover 944 is closed, the base 942 and the cover 944 cooperate to enclose an interior of the housing 940. When the front cover 944 is open, the interior of the housing can be accessed through a front side of the base 942.
  • a rear wall 946 of the base 942 can be secured to a structure such as a wall by fasteners that extend though mounting openings defined through the rear wall 946.
  • the terminal 910 includes a pivotal panel 948 that mounts within the interior of the housing 940.
  • the pivotal panel 948 includes a front side 950 and a rear side 952.
  • the front side 952 includes component mounting locations 954 for mounting optical components such as the optical power splitters 934.
  • the rear side 952 of the pivotal panel 948 includes a mounting location 955 for mounting the optical tap 912.
  • the fiber optic adapter 932 can be mounted to the rear wall 946.
  • the input optical fiber 916 can be routed through a sealed cable pass through location 956 defined through a bottom wall 958 of the base 942, coiled at a fiber storage location 960 at the rear wall 946, routed along the pivot location (i.e., hinge) of the pivotal panel 948 to the rear side 952 of the pivotal panel 948, and then looped around the rear side 952 of the pivotal panel 948 to the input 914 of the optical tap 912.
  • the tap optical pigtails 924 are looped from the tap outputs 922 of the optical tap 912 along the rear side 952 of the pivotal panel 948, routed through slots 962 in the panel 948 adjacent the panel hinge from the rear side 952 to the front side 950 of the panel 948, and then the connectorized ends 930 can routed to the component mounting location 954 to be available to be plugged into the optical power splitters 934.
  • the pass-through optical pigtail 920 is looped along the rear side of the panel 948 from the pass-through output 918 of the optical tap 912 to the panel hinge location, routed across the panel hinge location to the base 942, and the connectorized end 928 of the pass-through optical pigtail 920 can be plugged into an upper port of the fiber optic adapter 932.
  • the input optical fiber 916 of a subsequent tap terminal 910 can be routed through a sealed cable pass-through location 970 defined through the bottom wall 958 of the base 942 and the connectorized end 926 of the input optical fiber 916 can be plugged into a lower port of the fiber optic adapter 932 such that the input optical fiber 916 and the pass-through optical pigtail 920 are optically connected.
  • the optical power splitters 934 are symmetrical optical power splitters each having a split ratio of at least 1x8.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Coupling Of Light Guides (AREA)

Abstract

L'invention concerne des câbles optiques transportant à la fois des signaux divisés et non divisés qui sont acheminés entre diverses bornes dans un réseau. Dans certains types de bornes, une ou plusieurs des lignes optiques transportant les signaux divisés sont accédées. Dans d'autres types de bornes, on accède à une ou plusieurs des lignes optiques transportant les signaux non divisés. Les bornes peuvent être agencées dans n'importe quelle séquence souhaitée et le même type de câble (par exemple le même nombre de fibres) peut être acheminé entre chaque paire de bornes séquentiellement adjacente. Des architectures d'indexation et de prise sont également divulguées.
PCT/US2022/028031 2021-05-06 2022-05-06 Intégration de services point à point à indexation WO2022236024A1 (fr)

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IN202121020596 2021-05-06
IN202121020596 2021-05-06
IN202121032042 2021-07-16
IN202121032042 2021-07-16
IN202121047170 2021-10-18
IN202121047170 2021-10-18

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Citations (5)

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Publication number Priority date Publication date Assignee Title
US20120051707A1 (en) * 2010-08-30 2012-03-01 Barnes Ray S Methods, Apparatuses for Providing Secure Fiber Optic Connections
US20190056553A1 (en) * 2007-10-15 2019-02-21 Telescent Inc. Scalable and modular automated fiber optic cross-connect systems
US20200285012A1 (en) * 2016-01-26 2020-09-10 Commscope Technologies Llc Fiber indexing systems
US20200285015A1 (en) * 2014-10-06 2020-09-10 CommScope Techologies LLC Facilitating installation of fiber optic networks
US20200393631A1 (en) * 2016-09-06 2020-12-17 CommScope Connectivity Belgium BVBA Indexing architecture including an optical fiber cable fan-out arrangement

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190056553A1 (en) * 2007-10-15 2019-02-21 Telescent Inc. Scalable and modular automated fiber optic cross-connect systems
US20120051707A1 (en) * 2010-08-30 2012-03-01 Barnes Ray S Methods, Apparatuses for Providing Secure Fiber Optic Connections
US20200285015A1 (en) * 2014-10-06 2020-09-10 CommScope Techologies LLC Facilitating installation of fiber optic networks
US20200285012A1 (en) * 2016-01-26 2020-09-10 Commscope Technologies Llc Fiber indexing systems
US20200393631A1 (en) * 2016-09-06 2020-12-17 CommScope Connectivity Belgium BVBA Indexing architecture including an optical fiber cable fan-out arrangement

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