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Opt Express. 2009 Aug 31;17(18):16352-7. doi: 10.1364/OE.17.016352.

C-band single-longitudinal mode lanthanum co-doped bismuth based erbium doped fiber ring laser.

Author information

  • 1Photonics Research Centre, Department of Electrical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong. khurram@alumni.polyu.edu.hk

Abstract

We propose and demonstrate a stable, tunable and narrow linewidth C-band lanthanum co-doped bismuth based erbium doped fiber (EDF) ring laser with single longitudinal mode (SLM) operation. A free space thin film filter acts as a wavelength discriminative component selecting a few oscillating modes while a Lyot filter formed by a polarization maintaining (PM) fiber and a linear polarizer further discriminates and selects SLM efficiently. A power stability of < or = 0.05 dB, central wavelength variation of < or = 0.02 nm, a side-mode suppression ratio (SMSR) of at least > 43 dB, and a linewidth of about 1.3 kHz have been experimentally demonstrated.

PMID:
19724634
[PubMed]
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