Nagaraju, B and Paul, Mukul Chandra and Pal, Mrinmay and Pal, A and Varshney, R K and Pal, B P and Bhadra, Shyamal Kumar and Monnom, G and Dussardier, B (2009) Design and fabrication of an intrinsically gain flattened Erbium doped fiber amplifier. Optics Communication, 282 (12). pp. 2335-2338. ISSN 0030-4018

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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 >= 28 dB (gain excursion below +/- 2.2 dB within the C-band) when 16 simultaneous standard signal channels were launched by keeping the I/P level for each at -20 dBm/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. (C) 2009 Elsevier B.V. All rights reserved.

Item Type: Article
Uncontrolled Keywords: Erbium doped fiber amplifiers; Gain flattened EDFA; Modified chemical vapor deposition technique
Subjects: Processing Science
Divisions: Fiber Optics and Photonics
Depositing User: Bidhan Chaudhuri
Date Deposited: 29 Feb 2012 12:00
Last Modified: 08 Feb 2017 10:22

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