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Conferences > PQN > 1995 > SaB > SaB.3
  • Photosensitivity and Quadratic Nonlinearity in Glass Waveguides: Fundamentals and Applications
  • Technical Digest Series (Optica Publishing Group, 1995),
  • paper SaB.3
  • •https://doi.org/10.1364/PQN.1995.SaB.3

Gain Spectrum Flattening of Erbium-Doped Fiber Amplifier Using Long-Period Fiber Grating

E.M. Dianov, V.I. Karpov, A.S. Kurkov, O.I. Medvedkov, A.M. Prokhorov, V.N. Protopopov, and S.A. Vasil'ev

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Abstract

The gain spectrum nonuniformity is one of the most important problems in using erbium-doped fiber amplifiers (EDFA) in wavelength-division-multiplexing transmission systems. Several techniques for the gain spectrum flattening with the use of passive filters have been proposed: mechanical deformation of the fiber to couple fundamental and leaky modes [1], etching of the grating at the surface of a D-fiber [2], utilization of a twin-core fiber filter [3], application of photoinduced fiber Bragg grating [4], application of a Fourier filter based on the incorporation of the glass plate [5] or a tapered fiber filter [6].

© 1995 Optical Society of America

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