F. Suganuma et al., Development of a differential, optical, reflective displacement sensor by use of a multilayered waveguide, APPL OPTICS, 39(31), 2000, pp. 5745-5749
A noncontact and compact optical displacement sensor is proposed and demons
trated. The principle of this system is based on the differential optical-f
iber displacement sensor [Appl. Opt. 38, 1103 (1999)]. The waveguide of the
sensor consists of three thin plate glasses. This approach can miniaturize
and lighten the system. The performance of the sensor is geometrically ana
lyzed. The linearity and working range of the sensor are significantly impr
oved compared with those of the optical fiber. (C) 2000 Optical Society of
America .OCIS codes: 120.0120, 120.4820, 120.5700, 120.0280.