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

Reflection intensity optical fiber sensors for the mid-infrared

Not Accessible

Your library or personal account may give you access

Abstract

Two kinds of reflection intensity sensor made of chalcogenide glass fiber for the mid-IR region are demonstrated. One is a double-fiber reflection sensor based on two tied fibers with a gold-coated hollow metal waveguide connected to the far end of the fibers. The other is a single-fiber reflection sensor based on contact couplers. These reflectance sensors were coupled to a Fourier-transform IR spectrometer by a unique accessory based on nonimaging concentrators. This setup was built to measure absorption spectra of a polymer coating of an aluminum can and a sheet of drafting paper. A theoretical model treating the ratio between the signal from the target and the background is introduced. This model was helpful in deriving the sensitivity characteristics of the sensors from experimental absorption peak heights. Hence, the absorption peaks heights that we obtained using a single-fiber reflection sensor with a symmetric coupler were nearly 50% relative to those obtained with a double-fiber reflection sensor.

© 1997 Optical Society of America

Full Article  |  PDF Article
More Like This
Noncontact single-fiber-optic proximity sensor using a laser-fabricated tap

C. H. Lee and S. D. Allen
Appl. Opt. 36(10) 2217-2221 (1997)

Investigation and application of the frustrated-total-internal-reflection phenomenon in optical fibers

Kambiz Rahnavardy, Vivek Arya, Anbo Wang, and Joseph M. Weiss
Appl. Opt. 36(10) 2183-2187 (1997)

Limitation of absorption-based fiber optic gas sensors by coherent reflections

W. Jin, G. Stewart, W. Philp, B. Culshaw, and M. S. Demokan
Appl. Opt. 36(25) 6251-6255 (1997)

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 (7)

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 (18)

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