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1、ANSI/TIA/EIA-568-B.3-1-2002 Approved: April 3, 2002 TIA/EIA STANDARD Optical Fiber Cabling Components Standard Addendum 1 -Additional Transmission Performance Specifications for 50/125 prn Optical Fiber Cables TIAIEIA-5 68-B .3 - 1 1 (Addendum No. 1 to TIA/EIA-568-B.3) 1 APRIL2002 TELECOMMUNICATIONS
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6、ress all safety problems associated with its use or all applicable regulatory requirements. It is the responsibility of the user of this Standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations before its use. (From Standards Proposal
7、 Nos.3-3894-ADl-A, formulated under the cognizance of the TIA TR- 42.8 Subcommittee on Telecommunications Optical Fiber Cabling Systems.) Published by TELECOMMUNICATIONS INDUSTRY ASSOCIATION 2002 Standards and Technology Department 2500 Wilson Boulevard Arlington, VA 22201 PRICE: Please refer to cur
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17、MAGES IS A FUNDAMENTAL ELEMENT OF THE USE OF THE CONTENTS HEREOF, AND THESE CONTENTS WOULD NOT BE PUBLISHED BY TIA WITHOUT SUCH LIMITATIONS. -,-,- ANS ITTINEIA-568-B .3- 1 Additional Transmission Performance Specifications for 50/125 m Optical Fiber Cables Table of Contents 1. INTRODUCTION . 1 1.1 P
18、urpose . 1 2. SCOPE 1 2.1 Applicability 1 1 3. OPTICAL FIBER CABLES 1 3.1 General 1 3.2 Cable transmission performance . 2 4. PATCH CORDS . 2 4.1 General . 2 4.2 Patch CO . 2 2.2 Normative references . ANNEX A (INFORMATIVE) BIBLIOGRAPHY AND REFERENCES 3 List of Tables Table 1 -Additional optical fib
19、er cable transmission performance parameters 2 I ANS I/TIA/EIA-568-B. 3- 1 FOREWORD (This foreword is not a part of this Addendum.) In 1996, applications and cabling groups began discussing the need for multimode fiber cabling to support high data rate applications for private networks. The move tow
20、ard high-speed ( 1 gigabit- per-second) LANs requires the faster modulation capabilities of laser transmitters like the vertical cavity surface emitting laser (VCSEL) or the edge-emitting semiconductor laser diode. Unlike the less coherent light emitting diodes (LEDs), laser transmitters typically e
21、xcite only a subset of the fiber modes available. This change in transmitter property requires compatible specifications on both the transmitter launch conditions and the fiber modal dispersion properties to support these high-speed LAN applications. In March 1999, the United States Technical Adviso
22、ry Group (US TAG) requested that the Telecommunications Industry Association (TIA) TR-42 Engineering Committee on User Premises Telecommunications Cabling Infrastructure develop a recommended US position for ISO/IEC JTCI SC 25/WG 3 on “Next-Generation Optical Fiber Cabling.” TR-42 assigned the task
23、to TR-42.8, the Optical Fiber Cabling Subcommittee, which, in turn, accepted the assigned project. The TR-42.8 Subcommittee cooperated with the following standard groups that are related to this activity. a) TIA TR-42.1 - Commercial Building Cabling Subcommittee b) TIA FO-2.2 - Digital Multimode Sys
24、tems Subcommittee c) US TAG to ISO/IEC JTC 1/SC 25/WG 3 d) IEEE 802.3ae 10 Gigabit Ethernet Task Force TIA standards are developed within the Technical Committees of the TIA and the standards coordinating committees of the TIA standards board. Members of the committees serve voluntarily and without
25、commission. The companies that they represent are not necessarily members of the TIA. The standards 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
26、viewpoint expressed at the time that this Addendum 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 standard. This Addendum to ANSIITIAIEIA-568-B.3 has been prepared by the TR-42.8 Subcom
27、mittee and approved by the Technical Committee TR-42. Annex A is informative and not considered to be requirements of this Addendum. II -,-,- ANSITTIAIEIA-568-B.3-1 1. INTRODUCTION 1.1 Purpose This Addendum specifies additional component and transmission requirements for a 50I125 m optical fiber cab
28、le capable of supporting 10 GbIs serial transmission up to 300 m (984 ft) using 850 nm nominal wavelength lasers. These cables are suitable for use in accordance with ANSIITIAIEIA-568-B. 1. 2. SCOPE 2.1 Applicability This Addendum specifies minimum requirements for this optical fiber telecommunicati
29、ons cable used within a commercial building and between buildings in a campus environment. In addition to the requirements specified in this Addendum, this cable shall meet all of the requirements of ANSIITIAIEIA-568-B.3 and any of its respective addenda. This addendum provides requirements for mult
30、imode cable with higher performance over other multimode cable specified in ANSIITIAIEIA-568-B.3 and recognizes advances in cabling and optical transceiver technology, particularly technologies based on vertical cavity surface emitting lasers (VCSELs). 2.2 Normative references The following standard
31、s contain provisions that, through reference in this text, constitute provisions of this Addendum. At the time of publication, the editions indicated were valid. All standards are subject to revision; parties to agreements based on this Addendum are encouraged to investigate the possibility of apply
32、ing the most recent editions of the standards indicated. ANSI and TIA maintain registers of currently valid national standards published by them. ANSIITIAIEIA-568-B. 1, Commercial Building Telecommunications Cabling Standard, Part 1, General Requirements, 2001 TIAIEIA-492AAAC, Detail specification f
33、or 850-nm laser-optimized, 50- m core diameterIl25- m cladding diameter class l a graded-index multimode optical fibers, 2002 3. OPTICAL FIBER CABLES 3.1 General This clause specifies additional component and transmission requirements for a 50I125 m optical fiber cable capable of supporting 10 GbIs
34、serial transmission up to 300 m (984 ft) using 850 nm nominal wavelength lasers. These cables are suitable for use in accordance with ANSIITIAIEIA-568-B. 1. 1 -,-,- ANS I/TIA/EIA-568-B. 3- 1 Optical fiber cable type 850 nm laser-o pti m zed 50/125 m (per TIAIEIA- 492AAAC) 3.2 Cable transmission perf
35、ormance The cabled fiber shall meet the graded performance specifications of table 1 of this Addendum. Wavelength Maximum Minimum Minimum (nm) attenuation information information (d B/km) transmission transmission capacity for capacity for overfilled launch laser launch (MHz km) (MHz km) 850 3.5 150
36、0 2000 1300 1.5 500 Not Required Table 1 - Additional optical fiber cable transmission performance parameters 4. PATCH CORDS 4.1 General This clause contains the performance specifications for the optical patch cords recognized in this Addendum. These patch cords are used to connect optical fiber li
37、nks at cross-connects and as equipment or work area cords used to connect telecommunications equipment to horizontal or backbone cabling. 4.2 Patch cord cable An 850 nm laser-optimized 50/125 pm optical fiber patch cord shall be a cable of an indoor construction containing fiber that meets the requi
38、rements of table 1. 2 -,-,- ANS ITTIAIEIA-568-B .3- 1 ANNEX A (informative) BIBLIOGRAPHY AND REFERENCES This annex is informative only and is not part of this Addendum. This annex contains information on the documents that are related to or have been referenced in this document. Many of these docume
39、nts are in print and are distributed and maintained by national or international standards organizations. These documents can be obtained through contact with the associated standards body or designated representatives. The applicable electrical code in the United States is the National Electrical C
40、ode (NEC ). ANSI/EIAITIA-455-B-1998, Standard Test Procedures for Fiber Optic Fibers, Cables and Transducers, Sensors, Connecting and Terminating Devices, and other Fiber Optic Components FOTP-203 (EIA/TIA-455-203), Launched Power Distribution Measurement Procedure for Graded Index Multimode Fiber T
41、ransmitters FOTP-204 (TIA/EIA-455-204), Measurement of Bandwidth on Multimode Fiber ITM-3 (TIA/EIA-TSB62-3), Mode Power Distribution and Mode Transfer Function Measurement. ITM-20 (TIAIEIA-TSB62-20), Enhanced Bandwidth Performance over Laser-Based, Multimode Fiber Local Area Networks TIAIEIA-492AAAC, Detail specification for 850-nm laser-optimized, 50- m core diametedl25 m cladding diameter class 1 a graded-index multimode optical fibers 3 -,-,- -,-,- -,-,- -,-,-