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1、BRITISH STANDARD BS EN 62129:2006 Incorporating corrigenda June 2006 and December 2006 Calibration of optical spectrum analyzers ICS 33.180.30 ? Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008
2、 21:34:34 MDTNo reproduction or networking permitted without license from IHS -,-,- BS EN 62129:2006 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 May 2006 BSI 2008 ISBN 978 0 580 60811 7 National foreword This British Standard is the UK
3、 implementation of EN 62129:2006, incorporating corrigendum December 2006. It is identical with IEC 62129:2006. It supersedes PD IEC/PAS 62129:2004 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee GEL/86, Fibre optics. A list of organizations represent
4、ed on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments/c
5、orrigenda issued since publication Amd No.DateComments 16488 Corrigendum No.1 30 June 2006Correction to formatting errors at printing stage 31 March 2008Implementation of CENELEC corrigendum December 2006 (change to EN Foreword and addition of Annex ZA) Copyright British Standards Institution Provid
6、ed by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:34:34 MDTNo reproduction or networking permitted without license from IHS -,-,- EUROPEAN STANDARD EN 62129 NORME EUROPENNE EUROPISCHE NORM March 2006 CENELEC European Committee for Electr
7、otechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. N
8、o. EN 62129:2006 E ICS 33.180.30 English version Calibration of optical spectrum analyzers (IEC 62129:2006) Etalonnage des analyseurs de spectre optique (CEI 62129:2006) Kalibrierung von optischen Spektrumanalysatoren (IEC 62129:2006) This European Standard was approved by CENELEC on 2006-02-01. CEN
9、ELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on
10、application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secr
11、etariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherla
12、nds, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Incorporating corrigendum December 2006 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/1
13、4/2008 21:34:34 MDTNo reproduction or networking permitted without license from IHS -,-,- 2 Foreword The text of document 86/245/FDIS, future edition 1 of IEC 62129, prepared by IEC TC 86, Fibre optics, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 62129 on 2006-02
14、-01. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2006-11-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2009-02-01 _ End
15、orsement notice The text of the International Standard IEC 62129:2006 was approved by CENELEC as a European Standard without any modification. _ Annex ZA has been added by CENELEC. BS EN 62129:2006 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Lic
16、ensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:34:34 MDTNo reproduction or networking permitted without license from IHS -,-,- 3 CONTENTS FOREWORD 1 Scope 5 2 Normative references .5 3 Terms and definitions .6 4 Calibration test requirements10 4.1 Preparation .10 4.2 Reference test conditi
17、ons 10 4.3 Traceability .10 5 Resolution bandwidth (spectral resolution) test .11 5.1 Overview.11 5.2 Resolution bandwidth (spectral resolution) test 11 6 Displayed power level calibration13 6.1 Overview.13 6.2 Displayed power level (DPL) calibration under reference conditions .14 6.3 Displayed powe
18、r level (DPL) calibration for operating conditions16 6.4 Calculation of expanded uncertainty in displayed power level.21 7 Wavelength calibration .22 7.1 Overview.22 7.2 Wavelength calibration under reference conditions 23 7.3 Wavelength calibration for operating conditions .24 7.4 Calculation of ex
19、panded uncertainty in wavelength 26 8 Documentation .27 8.1 Measurement data and uncertainty 27 8.2 Measurement conditions27 Annex A (normative) Mathematical basis for calculation of calibration uncertainty.28 Annex B (informative) Examples of calculation of calibration uncertainty 32 Annex C (infor
20、mative) Using the calibration results 40 Annex E (informative) Further reading and references for calibration of wavelength scale50 power level uncertainty.16 2 Figure 1 Setup using a gas laser whose wavelength is known 11 Figure 2 Setup using a broadband source with a transmission device.11 Figure
21、3 Setup using an LD with an unknown wavelength.12 Figure 4 Setup for calibration of displayed power level under reference conditions .14 Figure 5 Test configuration for determining the wavelength dependence of displayed Annex ZA (normative) Normative references to international publications with the
22、ir Annex D (informative) Wavelength references45 51corresponding European publications BS EN 62129:2006 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:34:34 MDTNo reproduction or networkin
23、g permitted without license from IHS -,-,- 4 Figure 6 Test configuration for determining the polarization dependence of displayed power level uncertainty.18 Figure 7 Configuration for testing linearity error of displayed power level uncertainty19 Figure 8 Test configuration for determining the tempe
24、rature dependence of displayed power level uncertainty .20 Figure 9 Test configuration for determining the temperature dependence of wavelength uncertainty .26 Figure A.1 Deviation and uncertainty type B, and how to replace both with an appropriately larger uncertainty.29 Figure C.1 Calibration of O
25、SA wavelength scale using krypton emission lines 44 Figure D.1 Absorption of LED light by acetylene (12C2H2) .47 Figure D.2 Absorption of LED light by hydrogen cyanide (H13C14N) 48 Table 1 Recommended light sources12 Table C.1 OSA calibration results 43 Table C.2 Summary of OSA calibration parameter
26、s 44 Table D.1 Vacuum wavelengths (nm) of selected gas laser lines 45 Table D.2 Vacuum wavelengths (nm) of noble gas reference lines45 Table D.3 Vacuum wavelengths (nm) for the 1+3 band of acetylene 12C2H2 absorption lines 11 .46 Table D.4 Vacuum wavelengths (nm) for the 1+3 band of acetylene 13C2H2
27、 absorption lines 11 .47 Table D.5 Vacuum wavelengths (nm) of selected hydrogen cyanide (H13C14N) absorption lines 12 .48 BS EN 62129:2006 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:34
28、:34 MDTNo reproduction or networking permitted without license from IHS -,-,- 5 CALIBRATION OF OPTICAL SPECTRUM ANALYZERS 1 Scope This International Standard provides procedures for calibrating an optical spectrum analyzer designed to measure the power distribution of an optical spectrum. This analy
29、zer is equipped with an input port for use with a fibre-optic connector. An optical spectrum analyzer is equipped with the following minimum features: a) the ability to present a display of an optical spectrum with respect to absolute wavelength; b) a marker/cursor that displays the optical power an
30、d wavelength at a point on the spectrum display. NOTE This standard applies to optical spectrum analyzers developed for use in fibre-optic communications, and is limited to equipment that can directly measure the optical spectrum output from an optical fibre, where the optical fibre is connected to
31、an input port installed in the optical spectrum analyzer through a fibre-optic connector. In addition, an optical spectrum analyzer can measure the spectral power distribution with respect to the absolute wavelength of the tested light and display the results of such measurements. It will not includ
32、e an optical wavelength meter that measures only centre wavelengths, a Fabry-Perot interferometer or a monochromator that has no display unit. The procedures outlined in this standard are considered to be mainly performed by users of optical spectrum analyzers. The document, therefore, does not incl
33、ude correction using the calibration results in the main body. The correction procedures are described in Annex C. Of course, this standard will be useful in calibration laboratories and for manufacturers of optical spectrum analyzers. 2 Normative references The following referenced documents are in
34、dispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60050-731, International Electrotechnical Vocabulary (IEV) Chapter 731: Optical fibre
35、communication IEC 60359, Electrical and electronic measurement equipment Expression of performance IEC 60793-1 (all parts), Optical fibres Part 1: Measurement methods and test procedures IEC 60825-1, Safety of laser products Part 1: Equipment classification, requirements and users guide IEC 60825-2,
36、 Safety of laser products Part 2: Safety of optical fibre communication systems IEC 61290-3-1, Optical amplifiers Test methods Part 3-1: Noise figure parameters Optical spectrum analyzer method BS EN 62129:2006 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontro
37、lled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:34:34 MDTNo reproduction or networking permitted without license from IHS -,-,- 6 BIPM, IEC, IFCC, ISO, IUPAC, IUPAP, and OIML:1993, International vocabulary of basic terms in metrology (VIM) BIPM, IEC, IFCC, ISO, IUPAC, IUPAP, an
38、d OIML, Guide to the expression of uncertainty in measurement (GUM) 3 Terms and definitions For the purposes of this document, the terms and definitions contained in IEC 60050-731 and the following terms and definitions apply. 3.1 calibration set of operations which establishes, under specified cond
39、itions, the relationship between the values indicated by the measuring instrument and the corresponding known values of that quantity (see also VIM, definition 6.11) 3.2 calibration under reference conditions calibration which includes the evaluation of the test analyzer uncertainty under reference
40、conditions (3.17) 3.3 calibration for operating conditions the calibration for operating conditions of an optical spectrum analyzer (3.16) including the evaluation of the test analyzer operational uncertainty 3.4 centre wavelength centre the power-weighted mean wavelength of a light source in a vacu
41、um, in nanometers (nm) For a continuous spectrum the centre wavelength is defined as: centre = (1 / Ptotal ) () d (1) For a spectrum consisting of discrete lines, the centre wavelength is defined as: centre = / ii iii PP (2) where () is the power spectral density of the source, for example in W/nm;
42、i is the ith discrete wavelength; Pi is the power at i, for example, in watts; Ptotal is Pi = total power, for example, in watts. NOTE The above integrals and summations theoretically extend over the entire spectrum of the light source. 3.5 confidence level an estimation of the probability that the
43、true value of a measured parameter lies in the given range (see expanded uncertainty (3.11) BS EN 62129:2006 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 21:34:34 MDTNo reproduction or netw
44、orking permitted without license from IHS -,-,- 7 3.6 coverage factor k the coverage factor, k, is used to calculate the expanded uncertainty (3.11) U from the standard uncertainty (3.21), (see 3.11) 3.7 displayed power level DPL the power level indicated by an optical spectrum analyzer (3.16) under
45、going calibration (3.1) at a specified wavelength resolution setting NOTE With an optical spectrum analyzer, the power level for a set resolution is measured and displayed. 3.8 displayed power level deviation P the difference between the displayed power level measured by the test analyzer, POSA, and
46、 the corresponding reference power, Pref, divided by the reference power P = (POSA Pref) / Pref = POSA / Pref 1 (3) 3.9 displayed power level uncertainty P the standard uncertainty (3.21) of the displayed power level deviation P = (POSA / Pref 1) (4) NOTE In the above formula, is to be understood as
47、 the standard uncertainty (3.21). 3.10 displayed wavelength range the complete wavelength range shown in an optical spectrum analyzer (3.16) display for a particular instrument state (3.12) 3.11 expanded uncertainty U confidence interval the expanded uncertainty, U, is the range of values within which the measurement parameter, at the stated confidence level (3.5), can be expected to lie. It is equal to the coverage factor (3.6), k, times the combined standard uncertainty (3.21) : U = k (5) NOTE When the distribution of uncertaintie