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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 3, Iss. 4 — Apr. 10, 2005
  • pp: 187–189

Performance of optical amplifier employing silica host magnesium-aluminum-germanium co-doped erbium-doped fiber

Yongjun Fu, Kai Zheng, Wei Jian, and Shuisheng Jian  »View Author Affiliations


Chinese Optics Letters, Vol. 3, Issue 4, pp. 187-189 (2005)


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Abstract

Two silica host magnesium(Mg)-aluminum(Al)-germanium(Ge) co-doped erbium-doped fibers (EDFs) have been fabricated, which have different Mg concentrations. The concentration of all the compositions in the preform is measured through electronics probe micro analysis (EPMA). The maximum Mg concentrations of fibers A and B are 3.98 and 1.28 mol%, respectively. The performance characteristics including absorption spectrum and gain are measured and analyzed. The absorption coefficients of fibers A and B are 13.3 and 14.3 dB/m respectively at wavelength of 1532 nm. The max gains of these two erbium-doped fiber amplifiers (EDFAs) are 30.1 and 35.9 dB with input signal power of -30 dBm and pump power of 100 mW at 980 nm. Fiber B with maximum Mg concentration 1.28 mol% has better performance than fiber A. Fiber B has high absorption coefficient and high gain characteristics. The optimum fiber B length of C-band EDFA is 7 m and that of L-Band EDFA is about 30 m, which is much shorter than standard commercial EDFAs. The result of experiments showed that a few Mg added to silica host EDF can increase the concentration of erbium ions, which will shorten the EDF length much, but not degrade the performance characteristics.

© 2005 Chinese Optics Letters

OCIS Codes
(060.2410) Fiber optics and optical communications : Fibers, erbium
(140.4480) Lasers and laser optics : Optical amplifiers
(300.6170) Spectroscopy : Spectra

Citation
Yongjun Fu, Kai Zheng, Wei Jian, and Shuisheng Jian, "Performance of optical amplifier employing silica host magnesium-aluminum-germanium co-doped erbium-doped fiber," Chin. Opt. Lett. 3, 187-189 (2005)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-3-4-187

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