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Proceedings Paper

Longitudinal versus transversal excitation in doped graded-index polymer optical fibers
Author(s): M. A. Illarramendi; J. Arrue; I. Ayesta; F. Jiménez; J. Zubia; I. Bikandi; A. Tagaya; Y. Koike
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Paper Abstract

In this work we perform a detailed experimental and theoretical analysis of the properties of amplified spontaneous emission (ASE) in a rhodamine-6G-doped graded-index polymer optical fiber when the fiber is pumped either longitudinally or transversally with respect to the fiber axis. The dependence of the ASE threshold and efficiency on fiber length has been compared for both schemes of excitation. A theoretical model for longitudinal excitation has been carried out by means of the laser rate equations as functions of time, distance traveled by light and wavelength. The analysis takes into account that the fiber is a typical graded-index POF in which the radial distributions of light power density and dye concentration are not uniform. The theoretical calculations agree satisfactorily with the experimental results. The photodegradation of the ASE intensity has also been measured for both pumping schemes.

Paper Details

Date Published: 7 March 2014
PDF: 7 pages
Proc. SPIE 8983, Organic Photonic Materials and Devices XVI, 89830G (7 March 2014); doi: 10.1117/12.2037797
Show Author Affiliations
M. A. Illarramendi, Univ. del País Vasco (Spain)
J. Arrue, Univ. del País Vasco (Spain)
I. Ayesta, Univ. del País Vasco (Spain)
F. Jiménez, Univ. del País Vasco (Spain)
J. Zubia, Univ. del País Vasco (Spain)
I. Bikandi, Univ. del País Vasco (Spain)
A. Tagaya, Keio Univ. (Japan)
Y. Koike, Keio Univ. (Japan)

Published in SPIE Proceedings Vol. 8983:
Organic Photonic Materials and Devices XVI
Christopher E. Tabor; François Kajzar; Toshikuni Kaino; Yasuhiro Koike, Editor(s)

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