Gain characteristics of quantum dot fiber amplifier based on asymmetric tapered fiber coupler

Hairun Guo, Fufei Pang, Xianglong Zeng, Tingyun Wang

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

We theoretically analyzed the gain characteristics of an integrated semiconductor quantum dot (QD) fiber amplifier (SQDFA) by using a 2×2 tapered fiber coupler with a PbS QD-coated layer. The asymmetric structure of the fiber coupler is designed to have a maximum working bandwidth around 1550-nm band and provide a desired optical power ratio of the output signals. By using 600mW of 980-nm pump, 10dB gain of a 1550-nm signal is estimated with the gain efficiency of 4.5dB/cm.
Original languageEnglish
JournalOptical Fiber Technology
Volume19
Issue number2
Pages (from-to)143-147
ISSN1068-5200
DOIs
Publication statusPublished - 2013

Keywords

  • PbS QD-coated layer
  • Semiconductor quantum dot (QD) fiber amplifier

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