title: Rapid phase-shifting fiber interferometer with optical stylus.
abstract: Optical fiber interferometry holds many advantages for the online measurement of high-precision surfaces. Here, a fiber interferometer with a wavelength-scanning probe is reported. Such an interferometer requires active stabilization against the effects of temperature drift and vibration. A method of multiplexing dual wavelengths into the same fiber, combined with rapid phase shifting and real-time phase calculation, is investigated. Experimental data show the successful stabilization of the interferometer regardless of environmental perturbation.
authors.affiliation: University of Huddersfield, Queensgate, Huddersfield HD1 3DH, UK.
authors.forename: H
authors.initials: H
authors.lastname: Martin
authors.forename: X
authors.initials: X
authors.lastname: Jiang