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Design and fabrication of an intrinsically gain flattened Erbium doped fiber amplifier
- Source :
-
Optics Communications . Jun2009, Vol. 282 Issue 12, p2335-2338. 4p. - Publication Year :
- 2009
-
Abstract
- Abstract: We report design and subsequent fabrication of an intrinsically gain flattened Erbium doped fiber amplifier (EDFA) based on a highly asymmetrical and concentric dual-core fiber, inner core of which was only partially doped. Phase-resonant optical coupling between the two cores was so tailored through optimization of its refractive index profile parameters that the longer wavelengths within the C-band experience relatively higher amplification compared to the shorter wavelengths thereby reducing the difference in the well-known tilt in the gains between the shorter and longer wavelength regions. The fabricated EDFA exhibited a median gain ⩾28dB (gain excursion below ±2.2dB within the C-band) when 16 simultaneous standard signal channels were launched by keeping the I/P level for each at −20dBm/channel. Such EDFAs should be attractive for deployment in metro networks, where economics is a premium, because it would cut down the cost on gain flattening filter head. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 00304018
- Volume :
- 282
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- Optics Communications
- Publication Type :
- Academic Journal
- Accession number :
- 38808266
- Full Text :
- https://doi.org/10.1016/j.optcom.2009.02.063