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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 21 — Oct. 8, 2012
  • pp: 23684–23689

DFB laser based on single mode large effective area heavy concentration EDF

Qi Li, Fengping Yan, Wanjing Peng, Ting Feng, Suchun Feng, Siyu Tan, Peng Liu, and Wenhua Ren  »View Author Affiliations

Optics Express, Vol. 20, Issue 21, pp. 23684-23689 (2012)

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A π phase shifted distributed feedback (DFB) laser based on single mode large effective area heavy concentration erbium-doped fiber (EDF) has been demonstrated. The homemade EDF was fabricated by the modified chemical-vapor deposition (MCVD) technique, and the 13cm long π phase shifted fiber grating was written in the intracore of the EDF. The erbium-doped concentration is 4.19 × 1025 ions/m3, the mode field diameter of the fiber is 12.2801 um at 1550 nm, the absorption coefficients of the fiber are 34.534 dB/m at 980 nm and 84.253 dB/m at 1530 nm. The threshold of the DFB laser is 66 mW, and the measured maximum output power is 43.5 mW at 450 mW pump power that corresponding to the slope efficiency of 11.5%. The signal-to-noise ratio (SNR) of the operating laser at 200 mW input power is 55 dB, and the DFB laser has a Lorentz linewidth of 9.8 kHz at the same input pump power.

© 2012 OSA

OCIS Codes
(050.5080) Diffraction and gratings : Phase shift
(060.2280) Fiber optics and optical communications : Fiber design and fabrication
(060.2410) Fiber optics and optical communications : Fibers, erbium
(140.3490) Lasers and laser optics : Lasers, distributed-feedback
(140.3510) Lasers and laser optics : Lasers, fiber

ToC Category:
Lasers and Laser Optics

Original Manuscript: July 23, 2012
Revised Manuscript: September 19, 2012
Manuscript Accepted: September 19, 2012
Published: October 1, 2012

Qi Li, Fengping Yan, Wanjing Peng, Ting Feng, Suchun Feng, Siyu Tan, Peng Liu, and Wenhua Ren, "DFB laser based on single mode large effective area heavy concentration EDF," Opt. Express 20, 23684-23689 (2012)

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