title: Enhanced thermal stability of oleic-acid-capped PbS quantum dot optical fiber amplifier.
abstract: 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.
authors: Xiaolan
authors: X
authors: Sun
authors: Rong
authors: R
authors: Dai
authors: Juanjuan
authors: J
authors: Chen
authors: Wei
authors: W
authors: Zhou
authors: Tingyun
authors: T
authors: Wang
authors: Alan R
authors: AR
authors: Kost
authors: Chia-Kuang Frank
authors: CK
authors: Tsung
authors: Zesheng
authors: Z
authors: An