title: Dual-channel optical phase measurement system for improved precision.
abstract: Developments and applications of a dual-channel phase measurement system are being proposed and experimentally studied by utilizing an optical homodyne technique. In this measurement system, the phase modulation was adopted by using a near-stable Zn-indiffused lithium niobate phase modulator. The proposed method was successfully applied on the simultaneous measurements of the phase-retardation difference between a transmitted light and a reflected light after passing through a nonpolarization beam splitter. The measured stability of the phase-retardation difference was approximately 0.0013 rad.
authors.affiliation: Department of Electro-Optical Engineering, Southern Taiwan University, Tainan, Taiwan. rctwu@mail.stut.edu.tw
authors.forename: Ruey-Ching
authors.initials: RC
authors.lastname: Twu
authors.forename: Hao-Yang
authors.initials: HY
authors.lastname: Hong
authors.forename: Hsuan-Hsien
authors.initials: HH
authors.lastname: Lee