ANSI TIA EIA 455-107A-1999 Return Loss for Fiber Optic Components《光纤元件的回波损失试验》.pdf
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1、ANSI/TIA/EIA-455-107A-I999 Approved: February 8, 1999 TIAEIA STANDARD FOTP-107 Determination of Component Reflectance or LinWSystem Return Loss Using a Loss Test Set (Revision of EIATIA-455-107) MARCH 1999 TELECOMMUNICATIONS INDUSTRY ASSOCIATION Elsctrarn ir Industries Allia RCC Copyright Telecommun
2、ications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NOTICE TIA/EIA Engineering Standards and Publications are designed to serve the public interest through eliminating misunderstandings between manufac
3、turers and purchasers, facilitating interchangeability and improvement of products, and assisting the purchaser in selecting and obtaining with minimum delay the proper product for his particular need. Existence of such Standards and Publications shall not in any respect preclude any member or nonme
4、mber of TIA/EIA from manufacturing or selling products not conforming to such Standards and Publications, nor shall the existence of such Standards and Publications preclude their voluntary use by those other than TIAEIA members, whether the standard is to be used either domestically or internationa
5、lly. Standards and Publications are adopted by TIAEIA in accordance with the American National Standards Institute (ANSI) patent policy. By such action, TIA/EIA does not assume any liability to any patent owner, nor does it assume any obligation whatever to parties adopting the Standard or Publicati
6、on. This Standard does not purport to address 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
7、 before its use. (From Standards Proposal No. 2961-A, formulated under the cognizance of the TIA FO-6.3 Subcommittee on Fiber Optic Interconnecting Devices). Published by OTELECOMMUNICATIONS INDUSTRY ASSOCIATION 1999 Standards and Technology Department 2500 Wilson Boulevard Arlington, VA 22201 PRICE
8、: Please refer to current or call Global Engineering Documents, USA and Canada (1-800-854-7179) International (303-397-7956) Catalog of EU, JEDEC, and TIA STANDARDS and ENGINEERING PUBLICATIONS All rights reserved Printed in U.S.A. Copyright Telecommunications Industry Association Provided by IHS un
9、der license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TINEIA 455-1 07A FOTP-107 Determination of component reflectance or lin Wsystem return loss using a loss test set Contents . Foreword III Introduction . 1 Normative references 2 Apparat us . 3 Samp
10、ling and specimens 5 Procedure . 5 Calculation or interpretation of results 9 Documentation 9 Specification information . 10 Annex A (informative) 11 Annex B (informative) 16 Annex C (informative) 19 Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for Resa
11、leNo reproduction or networking permitted without license from IHS-,-,-TINEIA 455-1 07A This page left blank. ii Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TINEIA 455-1 07A
12、 FOTP-107 Determination of component reflectance or lin idsystem return loss using a loss test set Foreword (This Foreword is informative only and not part of this Standard.) This document comes from TIA Standards Proposal No. 2961, formulated under the cognizance of TIA FO-6.3, Subcommittee on Fibe
13、r Optic Interconnecting Devices. This FOTP is part of the series of test procedures included within Recommended Standard EIMIA-455. NOTE: This FOTP was previously published in EIMIA-455-1 07 as FOTP-I 07. There are two informative annexes. iii Copyright Telecommunications Industry Association Provid
14、ed by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TINEIA 455-1 07A This page left blank. iv Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted w
15、ithout license from IHS-,-,-TINEIA 455-1 07A FOTP-107 Determination of component reflectance or lin idsystem return loss using a loss test set 1 I nt rod uction 1.1 Intent This procedure is used to determine the ratio in decibels of the power reflected by the port of a component or assembly to the i
16、ncident power on the same port of that component or assembly when that component or assembly is introduced into a link or system. This ratio is termed “Return Loss“ when applied to a fiber optic system or link. Return loss, by convention, is a positive number. The ratio of reflected to incident powe
17、r is termed “Reflectance“ when applied to an individual component. Reflectance, by convention, is a negative number. 1.2 Scope This test procedure provides only a cumulative return loss for systems or links being tested. This procedure also provides a reflectance measurement for discrete components.
18、 If the reflectance for individual components in series within a system must be analyzed, FOTP-8 should be used in lieu of this procedure. This procedure offers two methods for measuring reflected power using a branching device and loss test set(s). These test methods may be destructive in nature an
19、d therefore not desirable for production testing. Annex A offers specialized variations of the test methods, for use in the non-destructive testing of connectorized assemblies. 1.3 Background It has been determined that returned power such as that caused by Fresnel reflections, when introduced to an
20、 optical system, can cause degradation to the transmitted signal or to the system light source or to both. Studies have indicated a need for a minimum specified return loss within optical systems based upon their transmission characteristics. This FOTP has been developed to provide a means of measur
21、ing return loss and reflectance. 1 Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TINEIA 455-1 07A 1.4 Limits of Usefulness This test procedure provides only a cumulative retur
22、n loss for components being tested. If the reflectance for individual components in series within a system must be analyzed, FOTP-8 should be used in lieu of this procedure. This procedure may be limited to testing components and fiberkable assemblies where the attached fiber can be placed in a mode
23、 filter or mandrel wrap. This test may not be able to be conducted on connectors or devices with fully enclosed fibers in a jacketed cable with a minimum bend radius greater than the mandrel wrap diameter. 2 Nor mat ive ref e re n ces Test of inspection requirements may include, but are not limited
24、to, the following references: E IA-440-A E I A/T I A-455-A FOTP-8 (ElA/TIA-455-8l1) FOTP-50 (EIA-455-50A) FOTP-54 (EIA/TIA-455-54A) FOTP-57 (EIA/TIA-455-57B2) FOTP-78 (EIA/TIA-455-78A) FOTP-I 80 (EIA/TIA-455-180) Fiber optic terminology Standard test procedures for fiber optic fibers, cables, transd
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- ANSITIAEIA455107A1999RETURNLOSSFORFIBEROPTICCOMPONENTS 光纤 元件 回波 损失 试验 PDF
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