Abstract
Erbium doped fiber amplifiers have produced up to a 34-dB optical gain at 1536 nm.1 Further increases in gain are accompanied by an increase in amplified spontaneous emission (ASE), which saturates the amplifier. This paper describes a gated erbium-fiber ring amplifier which avoids the problem of ASE buildup and unwanted feedback.
© 1990 Optical Society of America
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