Remote Measurement of Refractive Index of Air Using Tandem Interferometer over Long Optical Fiber
スポンサーリンク
概要
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The refractive index of air is accurately measured using a vacuum cell and a tandem low-coherence interferometer with a communication optical fiber of 30 km length with standard uncertainties of 0.20 ppm for the phase refractive index and 0.29 ppm for the group refractive index. Experimental results are compared with the value calculated from the equation for the refractive index of air using data obtained from measurements of the surrounding air, with a standard uncertainty of 0.22 ppm, and the difference between the average values is within 0.1 ppm. This method is applicable to the in situ high-precision measurement of optical length.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2008-09-25
著者
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SASAKI Kaoru
National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba Central 3
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Matsumoto Hirokazu
National Metrology Institute Of Japan (nmij)/national Institute Of Advanced Industrial Science And T
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Hirai Akiko
National Institute Of Advanced Industrial Science And Technology
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Sasaki Kaoru
National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, Ibaraki 305-8563, Japan
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Hirai Akiko
National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, Ibaraki 305-8563, Japan
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Matsumoto Hirokazu
National Institute of Advanced Industrial Science and Technology
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