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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 33, Iss. 14 — Jul. 15, 2008
  • pp: 1578–1580

Watt-level Er-doped and Er–Pr-codoped ZBLAN fiber amplifiers at the 2.7 2.8 μ m wavelength range

Xiushan Zhu and Ravi Jain  »View Author Affiliations


Optics Letters, Vol. 33, Issue 14, pp. 1578-1580 (2008)
http://dx.doi.org/10.1364/OL.33.001578


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Abstract

Characteristics of diode-pumped Er-doped and Er–Pr-codoped ZBLAN fiber amplifiers were investigated at the 2.7 2.8 μ m wavelength range. An amplified signal of 4.6 W was obtained from the singly Er-doped amplifier for an input signal of 110 mW , corresponding to a net gain of 16.2 dB . An amplified signal of 2.65 W was obtained from the Er–Pr-codoped amplifier for an input signal of 70 mW , corresponding to a net gain of 15.8 dB . It is found that the gain bandwidth of the singly Er-doped amplifier is much narrower than that of the Er–Pr-codoped amplifier. Small gain, no gain, or even a loss for shorter-wavelength signals propagating through the singly Er-doped amplifier should attribute for the large number residual populations in the lower laser level caused by the inefficient depopulation of the energy transfer upconversion processes.

© 2008 Optical Society of America

OCIS Codes
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.3500) Lasers and laser optics : Lasers, erbium
(140.4480) Lasers and laser optics : Optical amplifiers

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: April 22, 2008
Revised Manuscript: June 5, 2008
Manuscript Accepted: June 9, 2008
Published: July 11, 2008

Citation
Xiushan Zhu and Ravi Jain, "Watt-level Er-doped and Er-Pr-codoped ZBLAN fiber amplifiers at the 2.7-2.8 μm wavelength range," Opt. Lett. 33, 1578-1580 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-14-1578

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