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Journal of Nanophotonics

Blue polymer optical fiber amplifiers based on conjugated fluorene oligomers
Author(s): Jenny Clark; Luca Bazzana; Donal D. C. Bradley; Juan Cabanillas-Gonzalez; Guglielmo Lanzani; David George Lidzey; Jorge M. Morgado; Alessandro Nocivelli; Wing Chung Tsoi; Tersilla Virgili; Ruidong Xia
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Paper Abstract

We fabricated polymer optical fiber (POF) amplifiers operating between 440 and 480 nm, using POFs doped with a series of fluorene oligomers, including tri-, penta-(9,9-dioctylfluorene) and hepta-(9,9-dihexylfluorene). The gain properties of pure oligofluorene films demonstrate gain coefficients on the order of 250 dB/cm and amplified spontaneous emission thresholds between 1 and 8 μJ cm-2, significantly lower than other fluorene gain media. The optical and morphological characteristics of PMMA thin films doped with the oligomers demonstrate that the oligomers are largely isolated within the PMMA. The optical and gain properties of POFs produced using an adapted preform-drawing technique and doped with the oligofluorenes provide gain values on the order of 0.07 dB for 2 mm of doped POF. The oligofluorenes are largely isolated within the POFs, paving the way for all optical gain-switching.

Paper Details

Date Published: 1 March 2008
PDF: 17 pages
J. Nanophoton. 2(1) 023504 doi: 10.1117/1.2902341
Published in: Journal of Nanophotonics Volume 2, Issue 1
Show Author Affiliations
Jenny Clark, Politecnico di Milano (Italy)
Luca Bazzana, Luceat S.p.A. (Italy)
Donal D. C. Bradley, Imperial College London (United Kingdom)
Juan Cabanillas-Gonzalez, Politecnico di Milano (Italy)
Guglielmo Lanzani, Politecnico di Milano (Italy)
David George Lidzey, The Univ. of Sheffield (United Kingdom)
Jorge M. Morgado, Instituto Superior Técnico (Portugal)
Alessandro Nocivelli, Luceat S.p.A. (Italy)
Wing Chung Tsoi, The Univ. of Sheffield (United Kingdom)
Tersilla Virgili, Politecnico di Milano (Italy)
Ruidong Xia, Imperial College London (United Kingdom)

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