Uncertainty evaluation for calibration of optical fiber length standard using time-of-flight method

Xuebo Huang; Gan Xu; Dong Liang Wang

doi:10.1117/12.885871

28 December 2010 Uncertainty evaluation for calibration of optical fiber length standard using time-of-flight method

Xuebo Huang, Gan Xu, Dong Liang Wang

Proceedings Volume 7544, Sixth International Symposium on Precision Engineering Measurements and Instrumentation; 75446F (2010) https://doi.org/10.1117/12.885871
Event: Sixth International Symposium on Precision Engineering Measurements and Instrumentation, 2010, Hangzhou, China

Abstract

The time-of-flight method was used to calibrate an optical fiber length standard and its uncertainty of measurement was evaluated theoretically and experimentally according to the Evaluation of measurement data - Guide to the expression of uncertainty in measurement (GUM), JCGM 100:2008. The major uncertainty components in the measurement of transit time difference were identified and analyzed. The uncertainty due to temperature instability was investigated experimentally in the temperature range from 20 °C to 25 °C using a temperature chamber with precise temperature control. The temperature coefficient of the fiber length standard was derived by linear regression of the measurement data. The experimental results showed that the temperature control is critical for the calibration of optical fiber length standard. When the temperature instability was improved from ± 2 °C to ± 0.1 °C, the expanded measurement uncertainties for the optical fiber length standard (optical length : ~11780 m) were significantly reduced from 0.16 m to 0.014 m at wavelength of 1310 nm and from 0.19 m to 0.015 m at wavelength of 1550 nm.

Citation Download Citation

Xuebo Huang, Gan Xu, and Dong Liang Wang "Uncertainty evaluation for calibration of optical fiber length standard using time-of-flight method", Proc. SPIE 7544, Sixth International Symposium on Precision Engineering Measurements and Instrumentation, 75446F (28 December 2010); https://doi.org/10.1117/12.885871

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