Research Papers

Blue polymer optical fiber amplifiers based on conjugated fluorene oligomers

[+] Author Affiliations
Jenny Clark

Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo Da Vinci, 32, Milano, MI 20133 Italy

Luca Bazzana

LUCEAT SPA, Viale G. Marconi, 31, Dello, Italy

Donal D. Bradley

Blackett Lab, Imperial College, London, Prince Consort Road, London, SW7 2BW United Kingdom

Juan Cabanillas-Gonzalez, Guglielmo Lanzani

Dipartimento di Fisica, Politecnico di Milano, Leonardo Da Vinci, 32, Milano, MI 20133 Italy

David G. Lidzey

University of Sheffield, Hicks Building, Hounsfield Road, Sheffield, S3 7RH United Kingdom

Jorge Morgado

Departamento de Engenharia Qui´mica, Instituto Superior Tecnico, Ave Rovisco Pais, Lisbon, P-1049001 Portugal

Alessandro Nocivelli

LUCEAT SPA, Viale G. Marconi, 31, Dello, Italy

Wing C. Tsoi

University of Sheffield, Hicks Building, Hounsfield Road, Sheffield, S3 7RH United Kingdom

Tersilla Virgili

Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo Da Vinci, 32, Milano, MI 20133 Italy

Ruidong Xia

Blackett Lab, Imperial College, London, Prince Consort Road, London, SW7 2BW United Kingdom

J. Nanophoton. 2(1), 023504 (March 10, 2008). doi:10.1117/1.2902341
History: Received November 6, 2007; Revised March 3, 2008; Accepted March 3, 2008; March 10, 2008; Online March 10, 2008
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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.

© 2008 Society of Photo-Optical Instrumentation Engineers

Citation

Jenny Clark ; Luca Bazzana ; Donal D. Bradley ; Juan Cabanillas-Gonzalez ; Guglielmo Lanzani, et al.
"Blue polymer optical fiber amplifiers based on conjugated fluorene oligomers", J. Nanophoton. 2(1), 023504 (March 10, 2008). ; http://dx.doi.org/10.1117/1.2902341


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