Enhanced thermal stability of oleic-acid-capped PbS quantum dot optical fiber amplifier

Xiaolan Sun, Rong Dai, Juanjuan Chen, Wei Zhou, Tingyun Wang, Alan R. Kost, Chia Kuang Tsung, Zesheng An

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)519-524
Number of pages6
JournalOptics Express
Volume22
Issue number1
DOIs
StatePublished - Jan 13 2014

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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