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Proceedings Paper

Optimization of Pr3+-doped fluoride fiber amplifiers and substantial performance improvement with a pump reflecting mirror
Author(s): Mala Krishnan; Steven P. Bastien; Harish R. Sunak
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Paper Abstract

We report on optimized performance of Pr3+ doped fluoride fiber amplifiers (PDFA) using a comprehensive spatial and spectral computer model. We show the correspondence between results that were experimentally determined and those obtained using our model. Waveguide parameters for these amplifiers have been optimized for low and moderate values of relative refractive index difference. A cut-off wavelength of 750 nm gives maximum gain for NA equals 0.1 and 0.2. Particular emphasis is given to a comparison of the PDFA's performance with and without a Bragg reflecting pump mirror etched at the output end of the fiber. A pump reflecting mirror gives higher gain at smaller amplifier lengths (approximately equals 1/3) in both, the small and large signal regimes. We also report on the quantum conversion efficiencies (QCE) of PDFA. For the same length of fiber and a 0 dBm input signal, PDFA with a pump reflecting mirror has a QCE about twice that of a PDFA without a pump reflecting mirror at its output end.

Paper Details

Date Published: 23 March 1993
PDF: 9 pages
Proc. SPIE 1789, Fiber Laser Sources and Amplifiers IV, (23 March 1993); doi: 10.1117/12.141128
Show Author Affiliations
Mala Krishnan, Univ. of Rhode Island (United States)
Steven P. Bastien, EDFA Consultants (United States)
Harish R. Sunak, Univ. of Rhode Island and EDFA Consultants (United States)

Published in SPIE Proceedings Vol. 1789:
Fiber Laser Sources and Amplifiers IV
Michel J. F. Digonnet; Elias Snitzer, Editor(s)

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