Open AccessPicometer displacement sensing using the ultrahigh-order modes in a submillimeter scale optical waveguide
Author(s) -
Fan Chen,
Zhang Cao,
Qishun Shen,
Xiaoxu Deng,
Biming Duan,
Yumei Wen,
Ming-huang Sang,
Shengqian Wang
Publication year - 2005
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.13.010061
Subject(s) - optics , displacement (psychology) , cladding (metalworking) , interferometry , waveguide , materials science , physics , psychology , metallurgy , psychotherapist
An improved scheme for displacement measurement using the ultrahigh-order guided modes in a symmetrical metal-cladding optical waveguide is proposed. Based on this idea together with the lock-in amplification technique, a sensor with a stable displacement resolution of 3.3 pm is experimentally demonstrated without any complicated servo system.