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1、STD-ETSI ES 201 28b-ENGL 1997 I 3400855 0415877 783 ES 201 286 1 . 1 . 1 (1999-06) ETSl Standard Transmission and Multiplexing (TM); Passive optical components; Connector-type optical fixed attenuators for single-mode optical fibre communications systems; Common requirements and conformance testing
2、STDaETSI ES 203 286-ENGL 3779 3400855 0435878 b3T ETSI ES 201 286 V1.1.1 (1999-06) 2 Reference DES/TM-O1050 (bWOOicp.PDF) Kevwords optical, transmission, connector, fibre, monomode, testing, transpoti ETSI Postal address F-O6921 Sophia Antipolis Cedex - FRANCE Office adress 650 Route des Lucioles -
3、Sophia Antipolis Valbonne - FRANCE Siret N“ 348 623 582 O0017 - NAF 742 C Association h but non lucratif enregistre h la Cous-Prledure de Grasse (Os) Ne 780388 Tel.: +33 4 92 94 42 O0 Fax: +33 4 93 65 47 16 internet secretariat Q et.s.fr Individual copies of this E T S I deliverable can be downloade
4、d from http:/w.etsi.org If you find errors in the present document, send your comment to: editoretsi.fr Coa vriaht Notification No part may be reproduce except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. O European Telecommuni
5、cations Standards institute 1999. All rights reserved. STDWETSI ES 203 28b-ENGL 3999 3400855 0435899 556 D ETSI ES 201 286 V1.l.l (1999-00) 3 Contents Intellectual Property Rights . 4 Foreword 4 1 2 3 3.1 3.2 4 4.1 4.1.1 4.1.2 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 4.10 4.1 1 4.12 4.13 4.14 4.15 4.16 4.17
6、4.18 4.19 4.20 4.21 4.22 4.22.1 4.22.2 4.22.3 4.22.4 4.22.5 scope 5 Definitions and abbreviations 6 Definitions . 6 Abbreviations . 6 Details, measurements and performance requirements . 6 Visual inspection 6 Inspection of the end faces . 7 Dimensions and mechanical measurement accuracy 7 Attenuatio
7、n 7 R e m loss . 7 References . 5 Overall inspection of attenuators 6 Spectral dependence of attenuation 8 Polarization dependence of attenuation . 8 Maximum input power (optical power handling) . 8 Vibration (sinusoidal) 9 Bending moment 9 Strength of coupling mechanism 10 Drop test 10 Cold . 11 D
8、r y heat . 11 Damp heat (steady state) 12 Damp heat (cycling) . 12 Change of temperature . 13 Mechanical endurance . 13 Corrosive atmosphere (salt mist) . 14 industrial atmosphere . 14 Dust 15 Condensation . 15 intermateability 16 Attenuation measurement . 16 Return loss measurement 16 Change of tem
9、perature . 16 Strength of coupling mechanism 16 Mechanical endurance 16 5 Acceptance criteria 17 Other optical, environmental and mechanical requirements 17 5.1 Attenuation and return loss 17 5.2 5.3 Pass/fail criteria . 17 History 18 -,-,- STD-ETSI ES 201 2b-ENGL 1999 H 3400855 0435900 OT 4 ETSI ES
10、 201 286 V1.l.l (1999-00) Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in SR O00 3 14:
11、“Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect ofETSI standardy“, which is available free of charge from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http:/www.etsi.org/ipr). Pursuant to the ETSI IPR Policy, n
12、o investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in SR O00 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This ETSI Standard
13、(ES) has been produced by ETSI Technical Committee Transmission and Multiplexing (TM). ETSI STD-ETSI ES 201 28b-ENGL 1999 3400855 04LSSOL T34 ETSI ES 201 286 V1.1.1 (1999.06) 5 1 Scope The present document defines the requirements for connector-type fixed attenuators to be used in singlemode optical
14、 fibre transmission networks. This type of attenuator is sometimes referred to as a build-out attenuator. The present document does not cover variable or pigailed attenuators. The scope of the Standard is the establishment of minimum uniform requirements for the foilowing aspects: - - test condition
15、s; - acceptance criteria. optical, environmental and mechanical properties; Reliability aspects of connector-type optical attenuators are not covered by the present document. Someusers may require further testing to be specified. Examples would be extending the lower temperature limit, specifying mo
16、dal noise limits and extending operation into the 1 600 nm to 1 650 nm wavelength test window. These users should specify the present document plu their additional special requirements. Acceptance criteria will be interpreted with the consideration that some of the parameters specified in the presen
17、t document may be affected by measurement uncertainty arising either from measurement or calibration errors. Test methods are in accordance with EN 186000-1 5, EN 180000 2 or IEC 61300 series i, 3, 4. For a definition of a Connector-type optical attenuator see subclause 3.1 of the present document.
18、2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. 0 References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific. 0 For a specific reference, subseq
19、uent revisions do not apply. For a non-specific reference, the latest version applies. A non-specific reference to an ETS shall also be taken to refer to later versions published as an EN with the same number. Il IEC 61300-3-6: “Fibre optic interconnecting devices and passive components; Basic test
20、and measurement procedures; P a r t 3-6: Examinations and measurements; Return loss“. EN 180ooO: “Generic Specification. Fibre Optic Attenuators“ IEC 61300-3-2: “Fibre optic interconnecting devices and passive components; Basic tests and measurement procedures: Part 3-2: Examinations and measurement
21、s; Polarization dependence of a single-mode fibre optic device“. IEC 61300-2-14: “Fibre optic interconnecting devices and passive components; Basic tests and measurement procedures; Part 2-14: Tests; Maximum Input Power“. EN 186000-1 (1993): “Generic Specification: Connectors sets for Optical fibres
22、 and cables; Part 1: Requirements, test methods and qualification approval procedures“. ETS 300 019: “Equipment Engineering (E); Environmental conditions and environmental tests for telecommunications equipment“. 121 131 41 151 61 STDOETSI ES 203 Zab-ENGL 3999 3400855 0435902 970 6 6 ETSI ES 201 286
23、 V1.l.l (1999-06) 71 E C 60068-2-30: “Environmental testing; Part 2: Tests. Test Db and guidance: Damp heat, cyclic (12 + 12-hour cycle)“. IEC 874-1 (1993), including amendment 1 (1994): “Connectors for optical fibres and cables; Part 1: Generic Specification“. i81 3 Definit ions and abbreviations 3
24、.1 Definitions For the purposes of the present document, the following terms and definitions apply: optical attenuator: passive optical component which gives a controlled signal attenuation when inserted in an optical path connector-type optical attenuator: attenuator consisting of a fibre optic con
25、nector in which the element joining the two optical interfaces introduces a signal attenuation, providing a demountable coupling between optical fibres in addition to providing signal attenuation 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: cw Contin
26、uous wave OTDR Optical time domain reflectometer RL Return loss 4 Details, measurements and performance requirements All measurements shall be carried out at normal room conditions, unless otherwise stated. Before the attenuation and return loss measurement, careful cleaning in accordance with manuf
27、acturers instructions is necessary. All optical tests shaii be carried out in both the 1 310 nm window and the 1 550 um window unless otherwise stated. Light sources with peak wavelengths of 1 3 10 nm i 30 nm and 1 550 um i 30 um shall be used. Additionally the wavelength region from 1 600 nm to I 6
28、50 nm is of increasing interest for monitoring telecommunication cable networks. In this case the allowed limits for this region may be specified by the user as an addition to the minimum common performance standards defined in the present document. 4.1 Visual inspection 4.1 .l Overall inspection o
29、f attenuators Each connector-type fixed attenuator shall be adequately packaged to protect f r o m damage in transit before installation. The package shall be marked with the name of the manufacturer and the production date. The body of the connector-type fixed attenuator itself shall be legibly and
30、 durably marked with the identity mark of the manufacturer, the manufacturing date code and the UOmiMl attenuation. -,-,- STD-ETSI ES 201 286-ENGL 1999 3400855 0415903 807 7 ETSI ES 201 286 V1.l.l (1999-06) 4.1.2 Inspection of the end faces The end faces shall be clean and free from residues of glue
31、. Using a microscope with a maximum magnification of 200x, no significant scratches shall be permitted in the core region of the fibre and no break out of glass pieces shall be seen. There shall also be no heavy scratches visible on any other part of the polished fibre surfaces. Where applicable, th
32、ere shall also be no significant scratches or marks on the optical interfaces of the attenuating element. 4.2 Dimensions and mechanical measurement accuracy Measurements accuracy and standardization shall be established to ensure consistency of production and consistency of performance of intermitte
33、d connector-type attenuators from different sources. Mechanical measurement accuracy shall be demonstrated to be in accordance with IEC 874-1 amendment 1 8 or EN 186000-1 5. 4.3 Attenuation Details: In accordance with EN 180000 2, subclause 4.4.5, method 3 (measurements against 2 reference plugs). T
34、he eccentricity of the reference connector plugs (centre of fibre to centre of ferrule) shall be I 0,3 p. The other parameters of the reference plugs depend on the connector type and shall be specified by the user. Modal conditions: Requirements: The upper and lower limits of attenuation value are g
35、iven in table 1. The values in this table are the initial attenuation limits. A further variation off 0,5 dB is allowed during environmental and mechanical testing. Only the fundamental mode shall propagate at the fixed attenuator interface and at the detector. Table 1 I Nominal attenuation (dB1 I M
36、inimum initial I Maximum initial 1 20 18,5 30 4.4 Return loss Details: In accordance with EN 186000-1 5, subclause 4.4.12, method 3 (coupler method). - Launch fibre length: 2m 5 L S 4m. - Source stability: - Reference connector: f 0,20 dB over the measuring period or at least one hour. the reference
37、 connector shall conform to the same specification as the attenuator under test. Alternatively, the return loss may be measured using an OTDR in accordance with IEC 61300-3-6 i subclause 4.2, method B. ETSI STDmETSI ES 201 28b-ENGL 1779 3400855 0415904 743 9 8 ETSI ES 201 286 V1.l.l (1999-06) Requir
38、ements: Minimum return loss (RL) for every mating: - RL grade S: - RL grade T: - RL grade U: - RL grade V: 2 25 dB for standard return loss mated connector-type fixed attenuators. 2 35 dB for high return loss mated connector-type fixed attenuators. 2 50 dB for ultra high return loss mated connector-
39、type fixed attenuators. 2 55 dB for ultra high return loss connector-type fixed attenuators where return loss remains at this grade in both mated and unmated condition. 4.5 Spectral dependence of attenuation Details: In accordance with EN 180000 2, subclause 4.4.7. Requirements: The attenuation valu
40、es measured in the wavelength regions of 1 260 nm to I 360 nm and 1 480 nm to 1 580 nm shall be between the maximum and minimum values given in table 1. 4.6 Polarization dependence of attenuation Details: in accordance with IEC 61300-3-2 3, method A (ail polarization states). Requirements: - Allowab
41、le attenuation variation: f OS dB. 4.7 Maximum input power (optical power handling) Details: In accordance with EC 61300-2-14 4. - Wavelength: - CW test: optical power: test duration: - Pulsed light test: peak power: pulse duration: light pulses: repetition rate: Requirements: - Allowable attenuatio
42、n variation after the test: 1550nm. 10 mW; 1 O minutes. 10 mW; 0,2 ms to 0,8 ms; 104; 10 puiseds to 1 O00 pulsesls. f 0,5 dB. ETSI -,-,- STD-ETSI ES 201 28b-ENGL 1999 3400855 0415905 b8T ETSI ES 201 286 V1.l.l (1999-06) 9 4.8 Vibration (sinusoidal) Details: In accordance with EN 186 OOO-1 subclause
43、4.5.1. - Frequency range: 10 Hz to 55 Hz. - Endurance duration per axis: 0.5 hours. - Number of axes: - Number of cycles (10-55-10): - Vibration amplitude: Requirements: Allowable attenuation variation: three orthogonal. 15. 0.75 mm. f 0 . 5 dB. - Return loss: the connector-type fixed attenuator sha
44、ll satisfy the requirements for the specified class. The attenuation shall be measured before, during and after the test as specified in subclause 4.3. The maximum sampling interval during the test shall be 2 seconds. The return loss shall be measured as specified in subclause 4.4, before, during an
45、d after the test. The maximum sampling interval during the test shall be 2 seconds. 4.9 Bending moment Details: In accordance with EN 186000-1 5, subclause 4.5.7. - Magnitude of the load 10 N (smoothly applied). - Duration of the test (maintaining the load): 60 s. - Point of application of the load:
46、 25 mm from the optical interface. Requirements: - Allowable attenuation variation: f 0,5 dB. - Returnloss: the connector-type fixed attenuator shall satisfy the requirements for the specified class. The attenuation shall be measured before, during, and after the test as specified in subclause 4.3.
47、During the test the attenuation shall be measured at least once which the load is at the maximum level. The return loss shall be measured (as specified in subclause 4.4) before and after the test. ETSJ -,-,- STD-ETSI ES ZOL Zb-ENGL 1999 3400855 042590b 5Lb m ETSI ES 201 286 V1.l.l (1999-06) 10 4.1 O
48、 Strength of coupling mechanism Details: In accordance with EN 186000-1 5, subclause 4.5.6. - Magnitude of coupling torque: (screw type) IO,15 Nm. - Magnitude of the tensile load: (push-pull type) 40 N. - Rate of application of the load: 2 N/s. - Point of application of the load: 0,2 m from the spec
49、imen. - Duration of the test (maintaining the load): 120 s. Requirements: - Allowable attenuation variation: f 0,5 dB. - Returnloss: the connector-type fixed attenuator shall satisfy the requirements for the specified class. The attenuation shall be measured before and after the test as specified in subclause 4.3. The return loss shall