A novel phase-noise-suppressed and delay-time-tunable mode-locked erbium-doped fiber laser

Gong Ru Lin*, Yin-Chieh Lai

*Corresponding author for this work

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

A phase-noise-suppressed and delay-time-tunable actively mode-locked erbium-doped fiber ring laser is demonstrated by using voltage-controlled and frequency-discriminated phase shifter as an inherent timing module. By changing the voltage from -3.35 to 3.6 V, the maximum tuning range of phase and delay-time of 500 MHz optical pulse-train from the laser can be up to 340° (∼1.9 π) and 1.9 ns (nearly 1 period), respectively. Optimized responsivity and tuning deviation are 0.27 ps/mV and ≤ 4%. The single-sided-band phase the laser operated at feedback controlled mode is significantly reduced to -100 dBc/Hz (measured at frequency of 10 kHz offset from center), which is at least 10 dB smaller than that of the laser operated at free-running mode.

Original languageEnglish
Pages (from-to)169-175
Number of pages7
JournalOptics Communications
Volume212
Issue number1-3
DOIs
StatePublished - 15 Oct 2002

Keywords

  • Delay-time
  • Erbium-doped
  • Fiber laser
  • Frequency-discriminated
  • Mode-locking
  • Phase noise
  • Phase-shift

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