1、 TIA STANDARD ANSI/TIA-455-219-2002 Approved: December 16, 2002 FOTP-219 Multifiber Ferrule Endface Ferrule Hole Inside Diameter TIA-455-219 DECEMBER 2002 TELECOMMUNICATIONS INDUSTRY ASSOCIATION Representing the telecommunications industry in association with the Electronic Industries Alliance Copyr
2、ight Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NOTICE TIA Engineering Standards and Publications are designed to serve the public interest through eliminating misunderstandings betw
3、een manufacturers and purchasers, facilitating interchangeability and improvement of products, and assisting the purchaser in selecting and obtaining with minimum delay the proper product for their particular need. The existence of such Standards and Publications shall not in any respect preclude an
4、y member or non-member of TIA from manufacturing or selling products not conforming to such Standards and Publications. Neither shall the existence of such Standards and Publications preclude their voluntary use by Non-TIA members, either domestically or internationally. Standards and Publications a
5、re adopted by TIA in accordance with the American National Standards Institute (ANSI) patent policy. By such action, TIA does not assume any liability to any patent owner, nor does it assume any obligation whatever to parties adopting the Standard or Publication. This Standard does not purport to ad
6、dress 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 Proposa
7、l No. 3-0002-B, formulated under the cognizance of the TIA FO-4.3 Subcommittee on Interconnecting Devices.) Published by TELECOMMUNICATIONS INDUSTRY ASSOCIATION 2002 Standards and Technology Department 2500 Wilson Boulevard Arlington, VA 22201 U.S.A. PRICE: Please refer to current Catalog of TIA TEL
8、ECOMMUNICATIONS INDUSTRY ASSOCIATION STANDARDS AND ENGINEERING PUBLICATIONS or call Global Engineering Documents, USA and Canada (1-800-854-7179) International (303-397-7956) or search online at http:/www.tiaonline.org/standards/search_n_order.cfm All rights reserved Printed in U.S.A. Copyright Tele
9、communications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-PLEASE! DONT VIOLATE THE LAW! This document is copyrighted by the TIA and may not be reproduced without permission. Organizations may obtain pe
10、rmission to reproduce a limited number of copies through entering into a license agreement. For information, contact: Global Engineering Documents 15 Inverness Way East Englewood, CO 80112-5704 U.S.A. or call U.S.A. and Canada 1-800-854-7179, International (303) 397-7956 Copyright Telecommunications
11、 Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NOTICE OF DISCLAIMER AND LIMITATION OF LIABILITY The document to which this Notice is affixed has been prepared by one or more Engineering Committees of the
12、Telecommunications Industry Association (“TIA”). TIA is not the author of the document contents, but publishes and claims copyright to the document pursuant to licenses and permission granted by the authors of the contents. TIA Engineering Committees are expected to conduct their affairs in accordan
13、ce with the TIA Engineering Manual (“Manual”), the current and predecessor versions of which are available at http:/www.tiaonline.org/standards/sfg/engineering_manual.cfm. TIAs function is to administer the process, but not the content, of document preparation in accordance with the Manual and, when
14、 appropriate, the policies and procedures of the American National Standards Institute (“ANSI”). THE USE OR PRACTICE OF CONTENTS OF THIS DOCUMENT MAY INVOLVE THE USE OF INTELLECTUAL PROPERTY RIGHTS (“IPR”), INCLUDING PENDING OR ISSUED PATENTS, OR COPYRIGHTS, OWNED BY ONE OR MORE PARTIES. TIA MAKES N
15、O SEARCH OR INVESTIGATION FOR IPR. WHEN IPR CONSISTING OF PATENTS AND PUBLISHED PATENT APPLICATIONS ARE CLAIMED AND CALLED TO TIAS ATTENTION, A STATEMENT FROM THE HOLDER THEREOF IS REQUESTED, ALL IN ACCORDANCE WITH THE MANUAL. TIA TAKES NO POSITION WITH REFERENCE TO, AND DISCLAIMS ANY OBLIGATION TO
16、INVESTIGATE OR INQUIRE INTO, THE SCOPE OR VALIDITY OF ANY CLAIMS OF IPR. ALL WARRANTIES, EXPRESS OR IMPLIED, ARE DISCLAIMED, INCLUDING WITHOUT LIMITATION, ANY AND ALL WARRANTIES CONCERNING THE ACCURACY OF THE CONTENTS, ITS FITNESS OR APPROPRIATENESS FOR A PARTICULAR PURPOSE OR USE, ITS MERCHANTABILI
17、TY AND ITS NON-INFRINGEMENT OF ANY THIRD PARTYS INTELLECTUAL PROPERTY RIGHTS. TIA EXPRESSLY DISCLAIMS ANY AND ALL RESPONSIBILITIES FOR THE ACCURACY OF THE CONTENTS AND MAKES NO REPRESENTATIONS OR WARRANTIES REGARDING THE CONTENTS COMPLIANCE WITH ANY APPLICABLE STATUTE, RULE OR REGULATION. TIA SHALL
18、NOT BE LIABLE FOR ANY AND ALL DAMAGES, DIRECT OR INDIRECT, ARISING FROM OR RELATING TO ANY USE OF THE CONTENTS CONTAINED HEREIN, INCLUDING WITHOUT LIMITATION ANY AND ALL INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF BUSINESS, LOSS OF PROFITS, LITIGATION, OR TH
19、E LIKE), WHETHER BASED UPON BREACH OF CONTRACT, BREACH OF WARRANTY, TORT (INCLUDING NEGLIGENCE), PRODUCT LIABILITY OR OTHERWISE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. THE FOREGOING NEGATION OF DAMAGES IS A FUNDAMENTAL ELEMENT OF THE USE OF THE CONTENTS HEREOF, AND THESE CONTENTS WOULD
20、NOT BE PUBLISHED BY TIA WITHOUT SUCH LIMITATIONS. Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-455-219 i FOTP-219 Multifiber Ferrule Endface Geometry Measurement Contents
21、 Foreword.iii 1. Introduction / Intent 1 2. Normative references. 1 3. Apparatus / Test Equipment . 1 4 Test specimens 2 5. Measurement Regions. 2 6. Test Procedure 3 7. Documentation 6 8. Specification information 7 Annex A Guide-Pin Based Ferrule Geometry Precision Truncated Pins Technique (normat
22、ive) 8 Annex B - Biparabolic Surface (Informative). 10 Annex C - Endface Angle Sign Conventions (Informative). 11 Annex D - Fiber Numbering Convention (Informative) 12 Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking
23、permitted without license from IHS-,-,-TIA-455-219 iiThis page left blank. Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-455-219 iiiFOTP-219 Multifiber Ferrule Endface Geo
24、metry Measurement Foreword (This Foreword is informative only and is not part of this Standard.) From TIA (Telecommunications Industry Association) Project No. 3-0001, formulated under the cognizance of TIA FO-6, Committee on Fiber Optics, FO-63, Subcommittee on Fiber Optic Interconnecting Devices a
25、nd Passive Products; and FO-6.33, Working Group on Ferrule/Fiber Geometrical Measurements. This FOTP is part of the series of test procedures included within Recommended Standard TIA/EIA-455A. There are 4 annexes, 2 normative and 2 informative. Key words: interconnecting devices, fiber connector, op
26、tical connectors, interferometric equipment, connector housing. Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-455-219 ivThis page left blank. Copyright Telecommunications
27、Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-455-219 11 Introduction / Intent 1.1 This Document defines a test procedure to assess endface geometry in guide-pin based multifiber ferrules. The primary
28、 attributes are fiber height and endface angle relative to the guidepin bores. 1.2 This test method is based on the use of precision fixturing. This document is intended for use with interferometric measurement equipment. 1.3 This procedure assumes that the ferrule face surrounding the region of int
29、erest is equal to or lower in height than the surface inside the boundaries of the region of interest. 2 Normative references Test or inspection requirements may include, but are not limited to, the following references: TIA/EA-455-B, Standard test procedures for fiber optic fibers, cables, transduc
30、ers, sensors, connecting and terminating devices and other fiber optic components TIA/EIA-455-57B (FOTP-57) Optical fiber end preparation and examination Users of this FOTP are encouraged to specify the most recent edition of the documents referenced above. In case of dispute, use the specified docu
31、ment revision. Caution: Do not casually make the decision to require the most recent edition of a referenced FOTP. There have been instances when document revisions have completely changed the intent, application, use, etc. of a document such that the requirement to use an edition more recent than t
32、he one originally reviewed may be totally inappropriate. 3 Apparatus / Test Equipment 3.1. Test equipment shall include the following items: Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license f
33、rom IHS-,-,-TIA-455-219 23.1.1 Precision fixturing such that the angle of the ferrule face relative to the guide-pin bore axes may be determined. (There are several ways to do this. One such technique may be found in Annex A.) For whichever precision fixturing is chosen, a method must be included to
34、 confirm the accuracy and repeatability of the measurement. 3.1.2 An interferometer with adequate field of view and resolution. 3.1.3 Assorted cleaning materials such as lint free wipes and canned air. 4 Test specimens 4. TEST SPECIMEN 4.1. Each test specimen shall consist of a ferrule that may or m
35、ay not be mounted inside of a connector housing. Current industry examples include the large MT ferrule/MTP/MPX, the small MT ferrule/MT RJ/mini MPO and the DC ferrule/SC DC. 4.2. Connectors to be measured shall be allowed to stabilize at standard atmospheric conditions for at least 1 hour (25 degre
36、es C +/- 5 degrees C and 30 to 60% R.H.). 5. Measurement Regions 5. Measurement Regions: 5.1 The measurement uses 4 defined regions on the ferrule endface. Suggested values for these parameters may be found in table 2. 5.1.1 Region of interest (ROI): The ROI is set on the ferrule surface and defined
37、 by a rectangular region having a long axis of length L, and a short axis of width W. The region of interest shall be chosen to cover the intended contact zone of the ferrule endface when the ferrules are mated. The region of interest shall be centered on the fiber array. 5.1.2 Extracting Regions: T
38、he extracting regions, which include the fiber endface regions and the associated adhesive regions, are defined by circles having a diameter E, centered on each fiber. Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking
39、permitted without license from IHS-,-,-TIA-455-219 35.1.3 Fitting region: The fitting region is equal to the region of interest minus the extracting regions and is the data set used in making calculations for the ferrule surface. 5.1.4 Averaging Region: The averaging region is centered on each fiber
40、 surface and is used to calculate the fiber height. The averaging region is defined by a circle having a diameter F. The value used for this parameter will vary depending on the fiber type. To assess core dip in MM fibers, two averaging regions are used. The first is the core fitting region. The dia
41、meter of this region is 20u. The second region is an annular area bound by the annular maximum at 90u and the annular minimum at 70u. (See drawing below.) MM fiber cladding (125 um)Core fitting region (F) Annular minimum Annular maximum Figure 1 6. Test Procedure Copyright Telecommunications Industr
42、y Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-455-219 4Map the surface of the ferrule. To create data set “A”, use only the pixels contained within the ROI. Figure 2 Figure 3 Create data set “B” by removing
43、the extraction regions. Figure 4 Create surface “C” by fitting a biparabolic curve to data set “B”.( See Annex B for a suggested curve fitting routine.) Figure 5 Create data set “D” by subtracting surface “C” from data set “B”. Copyright Telecommunications Industry Association Provided by IHS under
44、license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-455-219 5Figure 6 Create data set “E” by removing the top 3% of the pixels in data set “D”. Figure 7 Create data set “F” by eliminating all but the top 20% of the pixels in data set “E”. Create dat
45、a set “G” by eliminating all pixels from data set “A” except for those identified in data set “F”. Figure 8 Figure 9 Fit a plane to data set “G” and use the plane to calculate X and Y angles using the average of the guide-pin bore axes as a reference. (See Annex C for endface angle sign conventions.
46、) “Add” the extraction regions back in. Calculate the fiber heights relative to the plane. (See Annex D for fiber numbering conventions.) Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from
47、 IHS-,-,-TIA-455-219 6Figure 10 Note: Ferrule endfaces are typically flat. The curvature in these drawings has been exaggerated for illustrative purposes. Create surface “H” by fitting a biparabolic curve to data set “G”. Remove residual X and Y tilt in the region of interest. Calculate the flatness
48、 deviation using the plane created in Figure 9. Flatness deviation is defined as the peak-to-valley height of the bi-parabolic fit across the region of interest measured to the plan created in Figure 9. This is measured along an axis parallel to the guide pin bore axis. Calculate the X and Y radius
49、values. Determine the MM core dip. This may be accomplished by subtracting the average height of the core fitting region from the average height of the annular averaging region. 7. Documentation 7.1 Report the following information for each test: 7.1.1 The date the test was completed 7.1.2 This FOTP number (FOTP-219). 7.1.3 The identificat
