title: Analysis of a spatially dispersive displacement sensor utilizing an AlGaInP chip.
abstract: We present a demonstration and analysis of an industrialized design of a spatially dispersive displacement sensor, which is composed of an AlGaInP gain chip in visible range, optical assembly, and a spectrum analyzer. The sensor utilizes the spatial dispersion of focus from the optical assembly and wavelength spectrum's deviation induced by the displacement of the target. As a result, the sensor delivers a quick and simple way of measuring displacement. By adapting the magnification and resolution of the optical assembly, a displacement sensor with a middle measurement range, ~10 microm, was obtained. However, we should note that 25 nm resolution is limited by the bandwidth and temperature fluctuation of the gain chip.
authors: Laser Application Technology Center, Industrial Technology Reasearch Institute, Number 8, Gongyan Road, Liujia Shiang, Tainan County 734, Taiwan.
authors: Ji-Bin
authors: JB
authors: Horng
authors: Jay
authors: J
authors: Liao
authors: Yao-Jun
authors: YJ
authors: Tsai
authors: Yen-Chen
authors: YC
authors: Huang
authors: Chieh
authors: C
authors: Hu
authors: Seth
authors: S
authors: Tsau
authors: Yan-Kuin
authors: YK
authors: Su
authors: Wei-Yang
authors: WY
authors: Chou