Share Email Print

Optical Engineering

Tapered fiber tips for fiber optic biosensors
Author(s): Harry Hong Gao; Zhongping Chen; Jayant Kumar; Sukant K. Tripathy; David L. Kaplan
Format Member Price Non-Member Price
PDF $20.00 $25.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Tapered fiber tips with different geometries are fabricated for developing a fiber optic biosensor. Fluorescence experiments are performed to compare the coupling efficiency of light for different fiber tip configurations. When light is generated in a "thick" layer (> 1 μm) around a fiber core, the continuously tapered tip with the steepest taper collects light more efficiently than the longer combination tapered tip. To demonstrate the applicability of our results, we have successfully detected weak chemiluminescent signal collected by a bundle of fibers with the short continuously tapered tips using a cooled CCD array detector. The chemiluminescence reaction was catalyzed by alkaline phosphatase immobilized on the fiber tips by a sol-gel technique.

Paper Details

Date Published: 1 December 1995
PDF: 6 pages
Opt. Eng. 34(12) doi: 10.1117/12.215379
Published in: Optical Engineering Volume 34, Issue 12
Show Author Affiliations
Harry Hong Gao, Univ. of Massachusetts/Lowell (United States)
Zhongping Chen, Univ. of Massachusetts/Lowell (United States)
Jayant Kumar, Univ. of Massachusetts Lowell (United States)
Sukant K. Tripathy, Univ. of Massachusetts/Lowell (United States)
David L. Kaplan, U.S. Army Natick RD&E Ctr. (United States)

© SPIE. Terms of Use
Back to Top