IEC 62129-2:2011

IEC 62129-2 ®
Edition 1.0 2011-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Calibration of wavelength/optical frequency measurement instruments –
Part 2: Michelson interferometer single wavelength meters

Étalonnage des appareils de mesure de longueur d’onde/appareil de mesure
de la fréquence optique –
Partie 2: Appareils de mesure de longueur d'onde unique à interféromètre de
Michelson
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IEC 62129-2 ®
Edition 1.0 2011-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Calibration of wavelength/optical frequency measurement instruments –
Part 2: Michelson interferometer single wavelength meters

Étalonnage des appareils de mesure de longueur d’onde/appareil de mesure
de la fréquence optique –
Partie 2: Appareils de mesure de longueur d'onde unique à interféromètre de
Michelson
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX X
ICS 33.180.30 ISBN 978-2-88912-523-4

– 2 – 62129-2  IEC:2011
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references. 7
3 Terms and definitions . 7
4 Preparation for calibration . 11
4.1 Organization . 11
4.2 Traceability . 11
4.3 Advice for measurements and calibrations . 11
4.4 Recommendations to customers . 12
5 Single wavelength calibration . 12
5.1 General . 12
5.2 Establishing calibration conditions. 12
5.3 Calibration procedure . 13
5.3.1 General . 13
5.3.2 Measurement configuration . 13
5.3.3 Detailed procedure. 15
5.3.4 Stability test (if necessary) . 15
5.3.5 "On/Off repeatability" measurement (optional if a specification is
available) . 16
5.3.6 Wavelength dependence measurement (optional) . 18
5.3.7 Connector repeatability measurement (optional) . 19
5.4 Calibration uncertainty . 20
5.5 Reporting the results . 21
6 Absolute power calibration . 21
Annex A (normative) Mathematical basis . 22
Annex B (informative) Rejection of outliers . 25
Annex C (informative) Example of a single wavelength calibration . 27
Annex D (informative) ITU wavelength bands . 30
Annex E (informative) Atomic and molecular reference transitions . 31
Annex F (informative) Reference locked laser example . 42
Annex G (informative) Balance between accuracy and calibration time. 44
Bibliography . 46

Figure 1 – Example of a traceability chain. 10
Figure 2 – Wavelength meter measurement using a lock quality monitor signal . 14
Figure 3 – Wavelength meter measurement using a reference wavelength meter . 14
Figure F.1 – Typical measurement arrangement to lock laser to gas absorption line . 43

Table 1 – Typical parameters to calculate the "On/Off repeatability" measurement
duration . 17
Table B.1 – Critical values Z as a function of sample size N . 26
c
Table C.1 – Type A uncertainty contributions for a stability measurement . 27
Table C.2 – Uncertainty contributions for a "On/Off repeatability" measurement . 28

62129-2  IEC:2011 – 3 –
Table C.3 – Uncertainty budget for wavelength dependence . 28
Table C.4 – Uncertainty budget for the wavelength meter calibration . 29
Table D.1 – The ITU-T bands in different units . 30
Table E.1 – Helium-neon laser lines . 32
Table E.2 – Centre vacuum wavelengths for Acetylene C H . 33
2 2
Table E.3 – Frequency and vacuum wavelength values for the v + v and v + v + v +
1 3 1 2 4
v bands of C H . 35
5 2 2
Table E.4 – List of H CN transitions . 38
12 16
Table E.5 – List of C O transitions. 40
Table E.6 – Excited state optogalvanic transitions . 41
Table G.1 – Summary of choices . 45

– 4 – 62129-2  IEC:2011
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CALIBRATION OF WAVELENGTH/OPTICAL FREQUENCY
MEASUREMENT INSTRUMENTS –
Part 2: Michelson interferometer single wavelength meters

FOREWORD
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