Low-Noise Narrow-Linewidth Fiber Laser at 1550 nm (June 2003)

Christine Spiegelberg, Jihong Geng, Yongdan Hu, Yushi Kaneda, Shibin Jiang, N. Peyghambarian

Research output: Contribution to journalArticlepeer-review

363 Scopus citations


We present a compact integrated fiber laser with more than 200 mW of output power. It combines polarized fiber output with very narrow linewidth of less than 2 kHz. The coherence length of the laser is measured to be longer than 5 km. The laser features high mode stability of less than ±10 MHz over hours. The relative intensity noise (RIN) spectrum is dominated by a peak at the relaxation oscillation frequency and is shot-noise limited otherwise. The RIN peak at 1 MHz is reduced to ∼ -130 dB/Hz by integrating a negative feedback circuit. In addition to thermal wavelength tuning, the laser frequency can be modulated at a bandwidth of up to 10 kHz via the piezoelectric effect.

Original languageEnglish (US)
Pages (from-to)57-62
Number of pages6
JournalJournal of Lightwave Technology
Issue number1
StatePublished - Jan 2004


  • Eye-safe
  • Fiber laser
  • High power
  • Long coherence length
  • Low noise
  • Narrow linewidth

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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