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Distortion-free Optical Fiber Amplifier for Analog Transmission Based on Hybrid Erbium-doped Fiber Configuration

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In optical analog transmission systems, spectral gain tilt of a constituent erbium-doped fiber amplifier(EDFA) is known to degrade signal distortions in combination with laser chirping[1]. It has been suggested that the gain-tilt-induced signal distortions can be suppressed by reducing the EDF length [2] or inserting a tilt compensating filter [3] at the expense of an output power.

© 1994 Optical Society of America

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