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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 18 — Sep. 5, 2005
  • pp: 7215–7224

Ultrahigh supermode noise suppressing ratio of a semiconductor optical amplifier filtered harmonically mode-locked Erbium-doped fiber laser

Gong-Ru Lin, Ming-Chung Wu, Yung-Cheng Chang, and Ci-Ling Pan  »View Author Affiliations

Optics Express, Vol. 13, Issue 18, pp. 7215-7224 (2005)

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The supermode noise suppressing ratio (SMSR) and the phase noise of a harmonically mode-locked Erbium-doped fiber laser (HML-EDFL) with an intra-cavity semiconductor optical amplifier (SOA) and an optical band-pass filter (OBPF) are improved and compared with a state-of-the-art Fabry-Perot laser diode (FPLD) injection-mode-locked EDFL. By driving the intra-cavity SOA based high-pass filter at unitary gain condition, the SMSR of the HML-EDFL is enhanced to 82 dB at the cost of degrading phase noise, increasing jitter, and broadened pulse width. The adding of OBPF further improves the SMSR, pulse width, phase noise, and jitter of the SOA-filtered HML-EDFL to 90 dB, 42 ps, -112 dBc/Hz, and 0.7 ps, respectively. The ultrahigh SMSR of the SOA-filtered HML-EDFL can compete with that of the FPLD injection-mode-locked EDFL without sacrificing its pulse width and jitter performances.

© 2005 Optical Society of America

OCIS Codes
(140.3500) Lasers and laser optics : Lasers, erbium
(140.3520) Lasers and laser optics : Lasers, injection-locked
(140.4050) Lasers and laser optics : Mode-locked lasers
(250.5980) Optoelectronics : Semiconductor optical amplifiers

ToC Category:
Research Papers

Original Manuscript: July 1, 2005
Revised Manuscript: August 25, 2005
Published: September 5, 2005

Gong-Ru Lin, Ming-Chung Wu, Yung-Cheng Chang, and Ci-Ling Pan, "Ultrahigh supermode noise suppressing ratio of a semiconductor optical amplifier filtered harmonically mode-locked Erbium-doped fiber laser," Opt. Express 13, 7215-7224 (2005)

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