Open AccessEnhanced thermal stability of oleic-acid-capped PbS quantum dot optical fiber amplifier
Author(s) -
Xiaolan Sun,
Rong Dai,
Juanjuan Chen,
Wei Zhou,
Tingyun Wang,
Alan Kost,
ChiaKuang Tsung,
Zesheng An
Publication year - 2014
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.000519
Subject(s) - materials science , quantum dot , oleylamine , fiber amplifier , oleic acid , thermal stability , optical amplifier , optoelectronics , fiber , amplifier , optical fiber , optics , laser , nanotechnology , chemistry , composite material , nanoparticle , physics , biochemistry , organic chemistry , cmos
Poor thermal stability has remained a severe obstacle for practical applications of optical fiber amplifiers based on quantum dots (QDs). We demonstrate that thermal stability at elevated temperatures can be achieved by using oleic-acid-capped QDs. Optical fiber amplifiers using oleic-acid-capped QDs for the gain medium exhibited stable gain of more than 5 dB at 1550 nm between 25 °C and 50 °C that did not degrade upon cooling. In contrast, fiber amplifiers employing oleylamine-capped QDs exhibited reduced gain when heated and subsequently cooled.