to be published as TSB ?
`
`TIA TECHNICAL SUBCOMMITTEE TR-42.8
`User-Premises Telecommunications Infrastructure
`
`Title:
`
`Proposal for TSB - Guidelines For Maintaining Optical Fiber Polarity With
`Systems Utilizing MPO Connectors And 12-Fiber Ribbon Cables
`
`Source: Chad Burel
`
`Corning Cable Systems
`P.O. Box 489, 800 17th Street NW, Hickory, NC 28603
`
`
`828.901.5593
`
`828.901.5533
`
`chad.burel@corning.com
`
`Date:
`
`January 29, 2002
`
`Location: for consideration in Ft. Lauderdale, Feb. 2002
`
`Distribution to: Participants of TR-42.8
`
`
`
`Abstract: This document contains a draft TSB that describes maintaining system
`polarity for three distinct optical fiber system types using MPO
`(12 fibers inside one connector ferrule) connectors to terminate 12-fiber
`ribbons and the MPO adapter. The Fiber Optic Connector
`Intermateability Standard, TIA/EIA-604-5 (FOCIS 5), specifies the
`physical attributes of the MPO connector and MPO adapter.
`
`Recommendation: For discussion
`
`Panduit Ex. 1006, p. 1
`
`

`
`Guidelines For Maintaining Optical Fiber Polarity With Systems Utilizing
`MPO Connectors And 12-Fiber Ribbon Cables
`
`to be published as TSB ?
`
`January 29, 2002
`Draft Copy
`
`Prepared by: TIA/EIA
`
`Subcommittee on Telecommunications Optical Fiber Cabling Systems
`TIA TR-42.8
`
`NOTICE:
`This TSB is intended to provide additional information for maintaining optical fiber
`polarity with systems utilizing MPO connectors and 12-fiber ribbon cables.
`
`Intellectual Property Statement
`The individuals preparing this contribution do not know of patents, the use of which may
`be essential to a standard resulting in whole or part from this contribution.
`
`Copyright Statement
`The Contributors grants a free, irrevocable license to the Telecommunications Industry
`Association (TIA) to incorporate text contained in this contribution and any modifications
`thereof in the creation of a TIA standards publication; to copyright in TIA’s name any
`standards publication even though it may include portions of this contribution; and at
`TIA’s sole discretion to permit others to reproduce in whole or in part the resulting TIA
`standards publication.
`
`NOTE - This TSB is copyright protected and shall not be reproduced in whole or in
`part without the permission of the Telecommunications Industry Association.
`
`ii
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`Panduit Ex. 1006, p. 2
`
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`to be published as TSB ?
`
`Guidelines For Maintaining Optical Fiber Polarity With Systems Utilizing
`MPO Connectors and 12-Fiber Ribbon Cables
`
`Table of Contents
`
`FOREWORD .................................................................................................................. iv
`1
`INTRODUCTION ...................................................................................................... 1
`2
`PURPOSE AND SCOPE .......................................................................................... 1
`3 NORMATIVE REFERENCES ................................................................................... 1
`3.1
`Color code of optical fibers ................................................................................ 2
`4 GUIDELINES FOR SYSTEM TYPE A: DUAL-FIBER SYSTEMS UTILIZING MPO
`CONNECTORS AND 12-FIBER RIBBON CABLES ........................................................ 3
`4.1
`General ............................................................................................................. 3
`4.2
`Implementing Reverse-Pair Positioning ............................................................. 3
`5 GUIDELINES FOR SYSTEM TYPE B: REVERSE-RIBBON POSITIONING FOR 4-
`FIBER HALF-DUPLEX SYSTEMS UTILIZING MPO CONNECTORS AND 12-FIBER
`RIBBONS ........................................................................................................................ 7
`5.1
`General ............................................................................................................. 7
`5.2
`Implementing Reverse-Ribbon Positioning ........................................................ 7
`6 GUIDELINES FOR SYSTEM TYPE C: CONSECUTIVE-RIBBON POSITIONING
`UTILIZING MPO CONNECTORS AND 12-FIBER RIBBONS .......................................... 9
`6.1
`General ............................................................................................................. 9
`6.2
`Implementing Consecutive-Ribbon Positioning ................................................. 9
`
`Table of Figures
`
`Figure 1 – MPO Connectors and Adapter…………………………………………………….5
`Figure 2 - Backbone Cable, MPO Connectors and Modules………………………………..5
`Figure 3 - Backbone Cable, MPO Connectors and Patch-Panels……………….…………6
`Figure 4 - Fiber and Key Orientation, MPO Connectors…………………………………….6
`Figure 5 - 4-fiber Half-Duplex System with MPO Transceiver Ports……………………….8
`Figure 6: OIF-VSR4-03.0 System with Reverse-Ribbon Positioning………………………8
`Figure 7 – Consecutive-Ribbon Positioning and MPO Connector Key…………………..10
`Figure 8 - Consecutive-Ribbon Positioning System………………………………………..10
`
`Table 1 - Fiber Number and Color Identification…………………………………………….2
`
`Table of Tables
`
`iii
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`Panduit Ex. 1006, p. 3
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`to be published as TSB ?
`
`FOREWORD
`
`(This foreword is not part of the Telecommunications Systems Bulletin)
`
`After ANSI/TIA/EIA-568-B.1 was approved for publication, it was realized that there was
`a need to explain and illustrate the concept of maintaining optical fiber polarity using
`MPO connectors and optical fiber ribbon cables. The TIA TR-42 Engineering Committee
`on User Premises Telecommunications Cabling Infrastructure accepted the task and
`assigned it to the TR-42.8 Subcommittee, Telecommunications Optical Fiber Cabling
`Systems. The TR-42.8 Subcommittee cooperated with the TR-42.1 Subcommittee on
`Commercial Building Cabling, which is related to this activity.
`
`TIA Telecommunications Systems Bulletins are developed within the Technical
`Engineering Committees of the TIA and the standards coordinating committees of the
`TIA standards board. Members of the committees serve voluntarily and without
`commission. The companies that they represent are not necessarily members of the
`TIA. The bulletins developed within the TIA represent a consensus of the broad
`expertise on the subject. This expertise comes from within the TIA as well as those
`outside of the TIA that have an expressed interest. The viewpoint expressed at the time
`that this Telecommunication Systems Bulletin was approved was from the contributors’
`experience and the state of the art at that time. Users are encouraged to verify that they
`have the latest revision of the telecommunications systems bulletin.
`
`This Draft Telecommunications Systems Bulletin has been prepared by the TR-42.8
`Subcommittee.
`
`iv
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`Panduit Ex. 1006, p. 4
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`
`INTRODUCTION
`1
`Maintaining optical fiber cabling polarity through the cabling system is crucial to the
`delivery of services. Once a cabling system is installed and correct polarity of the fiber
`pairs is verified, the administration of transmit and receive fibers should not be of
`concern to the end-user. For systems utilizing MPO connectors, three distinct system
`types have been identified, and maintaining proper polarity in the optical fiber cabling
`system is different for each. The three system types are the following:
`
`System Type A: Dual-fiber systems utilizing MPO connectors and 12-fiber ribbon cables.
`The optical fiber ribbon cable used to link two, 2-fiber optical transceiver ports (e.g., a
`server to a switch) is connected on both ends to either a module or a patch-panel. If
`modules are used (see Figure 2), optical
`fiber patch cords, as specified
`in
`ANSI/TIA/EIA-568-B.3 clause 6, should be used to interconnect to the respective
`transceiver ports. If patch-panels are used (see Figure 3), a hybrid, 12-fiber assembly
`should be used to interconnect to the respective transceiver ports.
`
`System Type B: 4-fiber, half-duplex systems utilizing MPO connectors and 12-fiber
`ribbon cables. The optical fiber ribbon cable used to link two transceiver ports (a.k.a.
`“parallel optics”) should be installed so that three 4-fiber groups are formed, which are
`four transmit fibers, four receive fibers, and four dark fibers (see Figures 5 and 6.) The
`formation of these three, quad groups forms the transmission and receive paths used in
`providing an OIF-VSR4-03.0 type telecommunications circuit.
`
`System Type C: 12-fiber systems utilizing MPO connectors and 12-fiber ribbon cables.
`The optical fiber ribbon cable used to link two transceiver ports (a.k.a. “parallel optics”)
`should be installed so that the twelve fiber positions are maintained from the transmitter
`port to the receiver port (see Figures 7 and 8.) A signal sent from transmitter position
`one should arrive at receiver position one.
`
`2 PURPOSE AND SCOPE
`This Telecommunications Systems Bulletin (TSB) is intended to provide installation
`guidelines for maintaining polarity of transmit and receive fibers in optical fiber cabling
`systems utilizing MPO connectors and 12-fiber ribbon cables. These guidelines are
`intended for cabling installations based upon several common system types. System
`Type A maintains proper polarity of dual-fiber circuits (either duplexed such as the
`568SC or two fibers per connector such as the MT-RJ) by installing the fibers in reverse-
`pair positioning. System Type B maintains proper polarity of high-speed, parallel optics
`systems by installing a 12-fiber ribbon using reverse-ribbon positioning. System Type C
`maintains proper polarity of high-speed, parallel optics systems by installing a 12-fiber
`ribbon using consecutive-ribbon positioning.
`
`3 NORMATIVE REFERENCES
`The following standards contain provisions, which through reference in this text
`constitute provisions of this TSB. At the time of publication, the editions indicated were
`valid. All standards are subject to revision, and parties to agreements based on this
`TSB are encouraged to investigate the possibility of applying the most recent editions of
`the standards indicated below. ANSI and TIA maintain registers of currently valid
`national standards published by them.
`
`1
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`Panduit Ex. 1006, p. 5
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`(cid:120) ANSI/TIA/EIA-568-B.1, Commercial Building Telecommunications Cabling
`Standard: Part 1, General Requirements
`(cid:120) ANSI/TIA/EIA-568-B.3, Optical Fiber Cabling Components Standard
`(cid:120) ANSI/TIA/EIA-598-A, Optical Fiber Cable Color Coding*
`
`* Document is in the process of being revised.
`
`3.1 Color code of optical fibers
`
`Optical fiber cable shall be colored as described in ANSI/TIA/EIA-598-A. This color
`code is used for identification and numbering of the individual fibers as shown in Table 1.
`
`Fiber Number - Color
`1 - Blue
`3 - Green
`5 - Slate
`7 - Red
`9 - Yellow
`11 - Rose
`
` Table 1 - Fiber Number and Color Identification
`
`
`Fiber Number - Color
`2 - Orange
`4 - Brown
`6 - White
`8 – Black
`10 - Violet
`12 - Aqua
`
`2
`
`Panduit Ex. 1006, p. 6
`
`

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`to be published as TSB ?
`
`4 GUIDELINES FOR SYSTEM TYPE A: DUAL-FIBER SYSTEMS UTILIZING
`MPO CONNECTORS AND 12-FIBER RIBBON CABLES
`
`4.1 General
`
`Optical fiber cable shall be color-coded as described in ANSI/TIA/EIA-598-A. This color-
`code is used for ease of identification and numbering of the individual fibers as shown in
`Table 1. Optical fiber cabling should be installed so that the odd numbered fiber within
`the cable is paired with the next consecutive even numbered fiber (e.g., fibers 1-blue
`and 2-orange, fibers 3-green and 4-brown, etc.) This installation of paired fibers forms
`transmit and receive transmission paths used in providing a telecommunications circuit.
`
`To achieve transmission paths while retaining cable integrity, reverse-pair positioning
`may be used. When terminating twelve fibers with one MPO connector, reverse-pair
`positioning
`is achieved by
`installing
`fibers
`in consecutive numbering
`(i.e.,
`1,2,3,4…11,12) on one end of an optical fiber link and by installing fibers using reverse-
`pair numbering (i.e., 2,1,4,3…12,11) on the other end of the link. Optical fiber patch
`cords, as specified in ANSI/TIA/EIA-568-B.3 clause 6, should be used when completing
`paths using reverse-pair positioning.
`
`Two, MPO connectors are designed to mate together in a key up to key down orientation
`via an MPO connector adapter. The construction of the adapter forces the key of one
`connector to be positioned 180(cid:113) from the key of the other when the connectors are
`mated. Figure 1 illustrates the typical orientation of two, MPO connectors and the MPO
`connector adapter.
`
`MPO connectors are most often used in the following configurations:
`
`1) Module Interconnection: This configuration includes duplex optical fiber patch cords
`(as specified in TIA/EIA-568-B.3 clause 6), two modules (duplex connector type to a
`MPO connector) and a backbone cable that is terminated on both ends with MPO
`connectors (see Figure 2.)
`2) As illustrated in Figure 3, a hybrid 12-fiber assembly (duplex connector type to MPO
`connector) and a backbone cable that is terminated on both ends with MPO
`connectors.
`
`4.2
`
`Implementing Reverse-Pair Positioning
`
`To implement reverse-pair positioning in the backbone cable (see Figures 2 and 3) the
`following steps should be taken.
`
`1) Assign each fiber in a backbone cable a sequential number, following the same order
`as described in TIA/EIA-598-A (see Table 1.)
`
`2) Install two, MPO connectors onto each 12-fiber ribbon in the backbone cable as
`follows.
`a) On one end of the cable, install the ribbon fibers into the MPO connector using
`consecutive numbering (i.e., 1,2,3,4…11,12) as shown in Figure 4 relative to the
`key.
`
`3
`
`Panduit Ex. 1006, p. 7
`
`

`
`to be published as TSB ?
`
`b) On the other end of the cable, install the ribbon into the MPO connector using
`reverse-pair numbering (i.e., 2,1,4,3…12,11) as shown in Figure 4 relative to the
`key.
`c) On each end, mate each MPO connector to the respective MPO connector
`adapter (either module or patch-panel.)
`
`3) Construct the 12-fiber assembly (the same assembly as seen in either Figure 2 with
`modules and Figure 3 with patch-panels) as follows.
`a) Install the MPO connector onto the ribbon as illustrated in Figure 4,
`Connector 1 – Key Up, Consecutive Numbering.
`b) Install duplex type connectors onto the other end of the 12-fiber ribbon as
`follows.
`(a) For each connector, install the fibers using consecutive numbering
`(1,2,3,4…12.)
`(i) For dual-fiber connectors (with 2 fibers in one connector such as
`MT-RJ), insert the odd number of each fiber pair to the right of the
`key as seen by installer and insert the connector into the correct
`adapter key up to key up.
`(ii) For duplexed connectors (with two single-fiber connectors such as
`SC-duplex), from a back view of the patch-panel, insert the odd
`number of each fiber pair on the right side of the duplex adapter.
`
`4
`
`Panduit Ex. 1006, p. 8
`
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`
`KEY DOWN
`
`KEYWAY UP
`
`KEY UP
`
`12-Fiber MPO
`Connector
`
`KEYWAY DOWN
`
`MPO CONNECTOR
`ADAPTER
`
`Figure 1 – MPO Connectors and Adapter
`
`Module
`
`Backbone Cable
`Duplex patch
`terminated with MPO
`cord (to
`
`connector(s)
`transceiver
`port)
`
`MPO
`connector
`mated to MPO
`connector, as
`seen in Figure 1
`
`12-fiber
`assembly
`(MPO type
`connector to
`duplex type
`connectors)
`
`Figure 2 – Backbone Cable, MPO Connectors and Modules
`
`5
`
`Panduit Ex. 1006, p. 9
`
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`
`to be published as TSB ?
`
`12-Fiber Assembly
`(MPO type connector to
`duplex type connectors)
`note: only one assembly
`shown plugged in
`
`Backbone Cable
`terminated with
`MPO connectors
`[note: only one MPO
`connector shown
`plugged into MPO
`connector adapter]
`
`MPO Connector
`Patch-Panel
`(6 mated
`connector pairs /
`72-fiber
`capacity)
`
`Figure 3 - Backbone Cable, MPO Connectors and Patch-Panels
`
`Connector 1 – Key Up, Consecutive Numbering
`
`Fiber 1 - blue
`
`Fiber 12 - aqua
`
`Connector 2 – Key Up, Reverse-pair Numbering
`
`Fiber 2 - orange
`
`Fiber 11 - rose
`
`Figure 4 - Fiber and Key Orientation, MPO Connectors
`
`6
`
`Panduit Ex. 1006, p. 10
`
`

`
`to be published as TSB ?
`
`5 GUIDELINES FOR SYSTEM TYPE B: REVERSE-RIBBON POSITIONING FOR
`4-FIBER HALF-DUPLEX SYSTEMS UTILIZING MPO CONNECTORS AND 12-
`FIBER RIBBONS
`
`5.1 General
`
`Optical fiber ribbon cabling should be installed so that three 4-fiber groups are formed
`from adjacent fibers, which are four transmit fibers, four receive fibers, and four non-
`working fibers (see Figure 5.) The formation of quad groups forms the transmission and
`receive paths used in providing an OIF-VSR4-03.0 type telecommunications circuit.
`
`To achieve the transmission paths while retaining cable integrity, reverse-ribbon
`positioning may be used. Reverse-ribbon positioning is achieved by installing the fibers
`into a connector using consecutive numbering (1, 2, 3,..., 12) on one of an optical link
`and installing fibers using reverse numbering (12, 11, 10,..., 1) on the other end of the
`optical fiber link.
`
`5.2
`
`Implementing Reverse-Ribbon Positioning
`
`To implement reverse-ribbon positioning in the cabling system, the following steps
`should be taken.
`a) Assign each fiber in a given ribbon a sequential number, following the same
`order as described in ANSI/TIA/EIA-598-A (see Table 1.)
`1) On one end of the cable, install a ribbon into the connector with the fibers
`in consecutive numbering (1,2,3,4…12) from left to right with the key up
`(see Note 2.)
`2) On the other end of the cable, install the ribbon into the connector with
`the fibers in reverse numbering (12,11,10,9…1) from left to right with the
`key up (see Note 2.)
`b) Install connectors into patch-panel adapters on both ends of the cable as
`follows (see Figure 6.)
`
`Notes
`
`1) The MPO connector adapters used in this type of system must be key-up to key-up and MPO connector end face
`must not be angled.
`
`2) From the installer’s point of view, fiber 1-blue will appear to the left on one end of the cable, and to the right on the
`other end. Fiber 12-aqua will appear in the opposite manner – on the right at one end of the link, and on the left at
`the other end.
`
`3)
`
`Patch Cords are built with the same Reverse-Ribbon Position configuration as described above.
`
`4) Successive cables placed in the channel (e.g. MC to IC, IC to HC) should be installed as described above.
`
`7
`
`Panduit Ex. 1006, p. 11
`
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`
`to be published as TSB ?
`
`Tx
`
`Rx
`
`◦◦◦◦
`
`Fibers 1-4 (working)
`
`Fibers 5-8 (non-working)
`
`Fibers 9-12 (working)
`
`◦◦◦◦
`
`Rx
`
`Tx
`
`
`
`MPO connector, key up (Fiber 1-
`blue to the right of key)
`
`MPO connector, key up (Fiber
`1- blue to the left of key)
`
`Tx Rx
`
`◦◦◦◦ ••••
`
`Tx Rx
`
`◦◦◦◦ ••••
`
` Figure 5 - 4-fiber Half-Duplex System with MPO Transceiver Ports
`
`Reverse-Ribbon Position Patch Cord
`
`Reverse-Ribbon Position Patch Cord
`
`Patch
`Panel #1
`
`••••
`Rx Tx
`
`Front Side of
`Patch-panels
`
`All keys are
`facing up
`
`Back Side of
`Patch-panels
`
`Patch
`Panel #2
`
`Cable
`
`Cable
`
` Figure 6: OIF-VSR4-03.0 System with Reverse-Ribbon Positioning
`
`••••
`Rx Tx
`
`Note:
`Each line represents 4
`active fibers. One group of
`4 active fibers has a
`dashed line (Fibers 1-4 in
`Figure 6) to distinguish it
`from the other group of 4
`active fibers (fibers 9-12 in
`Figure 6.) The four, non-
`working fibers are not
`shown.
`
`8
`
`Panduit Ex. 1006, p. 12
`
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`
`to be published as TSB ?
`
`TYPE C: CONSECUTIVE-RIBBON
`SYSTEM
`FOR
`6 GUIDELINES
`POSITIONING UTILIZING MPO CONNECTORS AND 12-FIBER RIBBONS
`
`6.1 General
`
`Optical fiber ribbon cabling should be installed so that fiber position is maintained from
`the transmitter to the receiver. A signal sent from transmitter position one should arrive
`at receiver position one.
`
`To achieve the transmission paths while retaining cable integrity, consecutive-ribbon
`positioning may be used. Consecutive-ribbon positioning is achieved by installing the
`fibers into each connector in consecutive number sequence (1, 2, 3,..., 12) on both ends
`of an optical link.
`
`6.2
`
`Implementing Consecutive-Ribbon Positioning
`
`To implement consecutive-ribbon positioning in the cabling system, the following steps
`should be taken.
`a) Assign each fiber in a given ribbon a sequential number, following the same
`order as described in ANSI/TIA/EIA-598-A (see Table 1.)
`b) On both ends of the cable, install the ribbon into the connector with the
`key up. The fibers should be in consecutive numbering (1,2,3,4…12) from
`right to left of the key (see Figure 7.)
`c) Install connectors into patch-panel adapters on both ends of the cable (see
`Figure 8.)
`
`Successive cables placed in the channel (e.g., MC to IC, IC to HC) should be installed
`as described above.
`
`Notes
`
`1) The adapters used in this type of system must be key-up to key-down.
`
`2)
`
`From the installer’s point of view, fiber 1-blue will appear to the right of the connector key on each end of the cable.
`Fiber 12-aqua will appear in the opposite manner – to the left of the key on each end of the cable.
`
`3)
`
`Patch Cords are built with the same Consecutive-Ribbon Positioning configuration as described above.
`
`9
`
`Panduit Ex. 1006, p. 13
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`
`to be published as TSB ?
`
`Position 1, Fiber 1- Blue
`
`Key Up
`
`Key Up
`
`Key Up
`
`Key Down
`
`Receiver
`
`••••••••••••
`
`Fiber 1-blue in Receive
`Position 1
`
`Position 1, Fiber 1- Blue
`
`Figure 7 – Consecutive-Ribbon Positioning and MPO Connector Key
`
`Fiber 1-blue in Transmit
`Position 1
`
`Patch-Panel Adapters
`
`◦◦◦◦◦◦◦◦◦◦◦◦
`
`Transmitter
`
`Consecutive-Ribbon Position Patch Cords
`
`Figure 8 - Consecutive-Ribbon Positioning System
`
`10
`
`Panduit Ex. 1006, p. 14