title: Trilateral optical powermeter comparison between NIST, NMIJ/AIST, and METAS.
abstract: 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.
authors.affiliation: National Institute of Standards and Technology, Colorado 80305, USA. igor@boulder.nist.gov
authors.forename: I
authors.initials: I
authors.lastname: Vayshenker
authors.forename: J H
authors.initials: JH
authors.lastname: Lehman
authors.forename: D J
authors.initials: DJ
authors.lastname: Livigni
authors.forename: X
authors.initials: X
authors.lastname: Li
authors.forename: K
authors.initials: K
authors.lastname: Amemiya
authors.forename: D
authors.initials: D
authors.lastname: Fukuda
authors.forename: S
authors.initials: S
authors.lastname: Mukai
authors.forename: S
authors.initials: S
authors.lastname: Kimura
authors.forename: M
authors.initials: M
authors.lastname: Endo
authors.forename: J
authors.initials: J
authors.lastname: Morel
authors.forename: A
authors.initials: A
authors.lastname: Gambon