Hybrid Mode Locked Fiber Laser Using a PDMS/SWCNT Composite Operating at 4 GHz

A hybrid mode-locked Erbium-doped fiber laser that provides very short pulse-widths while achieving high repetition rates is proposed and experimentally demonstrated. This hybrid configuration is realized by using a thin film of polydimethylsiloxane (PDMS) doped with single wall carbon nanotubes (SW...

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Bibliographic Details
Published in:Journal of lightwave technology 2011-11, Vol.29 (21), p.3237-3242
Main Authors: Hernandez-Romano, I., Davila-Rodriguez, J., Mandridis, D., Sanchez-Mondragon, J. J., May-Arrioja, D. A., Delfyett, P. J.
Format: Article
Language:English
Subjects:
Applied sciences
Carbon nanotubes
Cavity resonators
Circuit properties
Doped-insulator lasers and other solid state lasers
Electric, optical and optoelectronic circuits
Electronics
Erbium-doped fiber lasers
Exact sciences and technology
Fiber lasers
Fundamental areas of phenomenology (including applications)
Integrated optics. Optical fibers and wave guides
Laser mode locking
Lasers
mode-locked lasers
Modulation
Optical and optoelectronic circuits
Optical fiber polarization
Optics
Physics
saturable absorber
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Summary:A hybrid mode-locked Erbium-doped fiber laser that provides very short pulse-widths while achieving high repetition rates is proposed and experimentally demonstrated. This hybrid configuration is realized by using a thin film of polydimethylsiloxane (PDMS) doped with single wall carbon nanotubes (SWCNT). This PDMS/SWCNT composite acts as a saturable absorber and is inserted within an active mode-locked laser system using angled connectors. Therefore, the effect of the PDMS/SWCNT composite is to effectively narrow the width of the pulses generated by the active system without modifying its repetition rate. A pulse-width of 730 fs was generated at a repetition rate of 4 GHz, while achieving an average output power of 4 mW. A reduction in the noise of the photodetected RF spectrum was also observed in the hybrid system.
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2011.2167654