title: Analog differential-phase detection in optical coherence reflectometer.
abstract: A novel differential-phase optical coherence reflectometer (DP-OCR) was proposed using a low-coherence source, integrating it with an analog differential-phase decoding method. In the experiment, the DP-OCR performed a localized surface profile measurement of an optical grating (1200 lp/mm) and demonstrated its ability to measure the translation speed of a tilted mirror. Experimentally, the resolution of the axial displacement of proposed DP-OCR at 185 pm was demonstrated.
authors: Department of Biomedical Imaging and Radiological Sciences, National Yang-Ming University, Taipei 112, Taiwan.
authors: Huan-Jang
authors: HJ
authors: Huang
authors: Tsung-Yu
authors: TY
authors: Hsieh
authors: Li-Dek
authors: LD
authors: Chou
authors: Wen-Chuan
authors: WC
authors: Kuo
authors: Chien
authors: C
authors: Chou
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D007368:Interferometry / Q000295:instrumentation*; D008422:Materials Testing / Q000295:instrumentation*; D012031:Refractometry / Q000295:instrumentation*; D013499:Surface Properties; D041623:Tomography, Optical Coherence / Q000295:instrumentation*