Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Compact fiber optic dual-detection confocal displacement sensor

Not Accessible

Your library or personal account may give you access

Abstract

We propose a dual-detection confocal displacement sensor (DDCDS) with a compact fiber-based optical probe. This all-fiber-optic sensor probe is simple and robust, since it only requires simple alignment of a gradient refractive index lens and a double-clad fiber (DCF). The DDCDS is composed of two point detectors, one coupled to a single mode fiber and the other coupled to a multimode fiber, which are used to measure the light intensity from a core and an inner clad of a DCF, respectively. The ratio of the axial response curves, measured by the two detectors, can be used to obtain a linear relationship between the axial position of the object plane and the ratio of the intensity signals. We demonstrate the performance of the proposed method by measuring micromovement and fast vibration.

© 2016 Optical Society of America

Full Article  |  PDF Article
More Like This
Fiber optic displacement sensor employing a graded index lens

Patrick J. Murphy and Thomas P. Coursolle
Appl. Opt. 29(4) 544-547 (1990)

High-resolution and wide-bandwidth light intensity fiber optic displacement sensor for MEMS metrology

Karolina Orłowska, Michał Świątkowski, Piotr Kunicki, Daniel Kopiec, and Teodor Gotszalk
Appl. Opt. 55(22) 5960-5966 (2016)

High sensitivity fiber optic angular displacement sensor and its application for detection of ultrasound

João Marcos Salvi Sakamoto, Cláudio Kitano, Gefeson Mendes Pacheco, and Bernhard Rainer Tittmann
Appl. Opt. 51(20) 4841-4851 (2012)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (3)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved