Quad-ring based erbium fiber laser for switchable and stable single-longitudinal-mode operation

Chien Hung Yeh*, Li Hung Liu, Han Shin Ko, Bo Yin Wang, Wei Hung Hsu, Chi Wai Chow, Jing Heng Chen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

To accomplish single-longitudinal-mode (SLM) output and continuous wavelength selection, an erbium-doped fiber (EDF) quad-ring (QR) laser is presented and experimentally examined. The designed QR scheme can induce a mode-filter effect to compress dense multi-mode oscillation, narrow laser linewidth and flatten power output simultaneously. Hence, the attained optical signal to noise ratio (OSNR) and output power are between in an obtainable tunability bandwidth of 1524.0 to 1569.0 nm. In addition, the observed output characteristics of stability, flatness and linewidth of the fiber laser are also investigated and discussed.

Original languageEnglish
Article number102450
JournalOptical Fiber Technology
Volume61
DOIs
StatePublished - Jan 2021

Keywords

  • Erbium-doped fiber laser (EDFL)
  • Quad-ring (QR)
  • Single-longitudinal-mode (SLM)
  • Vernier effect

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