title: Dynamic frequency-domain interferometer for absolute distance measurements with high resolution.
abstract: A unique dynamic frequency-domain interferometer for absolute distance measurement has been developed recently. This paper presents the working principle of the new interferometric system, which uses a photonic crystal fiber to transmit the wide-spectrum light beams and a high-speed streak camera or frame camera to record the interference stripes. Preliminary measurements of harmonic vibrations of a speaker, driven by a radio, and the changes in the tip clearance of a rotating gear wheel show that this new type of interferometer has the ability to perform absolute distance measurements both with high time- and distance-resolution.
authors.affiliation: Laboratory for Shock Waves and Detonation Physics Research, Institute of Fluid Physics, P. O. Box 919-102, Mianyang, Sichuan 621900, China.
authors.forename: Jidong
authors.initials: J
authors.lastname: Weng
authors.affiliation: Laboratory for Shock Waves and Detonation Physics Research, Institute of Fluid Physics, P. O. Box 919-102, Mianyang, Sichuan 621900, China.
authors.forename: Shenggang
authors.initials: S
authors.lastname: Liu
authors.affiliation: Laboratory for Shock Waves and Detonation Physics Research, Institute of Fluid Physics, P. O. Box 919-102, Mianyang, Sichuan 621900, China.
authors.forename: Heli
authors.initials: H
authors.lastname: Ma
authors.affiliation: Laboratory for Shock Waves and Detonation Physics Research, Institute of Fluid Physics, P. O. Box 919-102, Mianyang, Sichuan 621900, China.
authors.forename: Tianjiong
authors.initials: T
authors.lastname: Tao
authors.affiliation: Laboratory for Shock Waves and Detonation Physics Research, Institute of Fluid Physics, P. O. Box 919-102, Mianyang, Sichuan 621900, China.
authors.forename: Xiang
authors.initials: X
authors.lastname: Wang
authors.affiliation: Laboratory for Shock Waves and Detonation Physics Research, Institute of Fluid Physics, P. O. Box 919-102, Mianyang, Sichuan 621900, China.
authors.forename: Cangli
authors.initials: C
authors.lastname: Liu
authors.affiliation: Laboratory for Shock Waves and Detonation Physics Research, Institute of Fluid Physics, P. O. Box 919-102, Mianyang, Sichuan 621900, China.
authors.forename: Hua
authors.initials: H
authors.lastname: Tan