1.5-μm frequency-stabilized λ/4-shifted DFB LD employing an external fiber ring cavity with a linewidth of 2.6 kHz and an RIN of - 135 dB/Hz

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Abstract

We present a 13C2H2 frequency-stabilized λ/4-shifted distributed feedback laser diode (DFB LD) with an external fiber ring cavity. By controlling the λ/4-shifted DFB passband to track one Fabry-Pérot mode associated with the fiber ring cavity, the oscillation frequency was continuously tuned over 1.2 GHz without mode-hopping. The optical frequency was stabilized to a 13C2H 2 absorption line with an external frequency modulation scheme that enabled us to realize an output beam without additional modulation. As a result, we obtained a frequency stability as high as 1.4 × 10-10 for τ =1 s and 1.3 × 10-11 for τ =100 s. In addition, we simultaneously achieved a linewidth of 2.6 kHz and a relative intensity noise of less than -135 dB/Hz.

Original languageEnglish
Article number5762590
Pages (from-to)1046-1048
Number of pages3
JournalIEEE Photonics Technology Letters
Volume23
Issue number15
DOIs
Publication statusPublished - 2011

Keywords

  • Acetylene (CH) absorption line
  • coherent optical transmission
  • frequency stabilization
  • λ/4-shifted distributed feedback laser diode (DFB-LD)

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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