Trilateral optical powermeter comparison between NIST, NMIJ/AIST, and METAS.
We describe the results of a comparison of reference standards between three National Metrology Institutes: the National Institute of Standards and Technology (NIST, USA), the National Metrology Institute of Japan/National Institute of Advanced Industrial Science and Technology (NMIJ/AIST, Japan), and the Federal Office of Metrology (METAS, Switzerland). Open-beam- (free field) and optical-fiber-based measurements at wavelengths of 1302 and 1546 nm are reported. Three laboratories' reference standards are compared by means of two temperature-controlled, optical trap detectors. Measurement results show the largest differences of less than 4.2 parts in 10(3), which is within the expanded (k=2) uncertainty for the laboratories' reference standards.
Vayshenker
I
I
National Institute of Standards and Technology, Colorado 80305, USA. igor@boulder.nist.gov
Lehman
J H
JH
Livigni
D J
DJ
Li
X
X
Amemiya
K
K
Fukuda
D
D
Mukai
S
S
Kimura
S
S
Endo
M
M
Morel
J
J
Gambon
A
A