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Noise Properties of Cascaded Erbium-Doped Fiber Amplifiers in SCM Analog Video Distribution Systems
Hisao YOSHINAGA Koji KIKUSHIMA Etsugo YONEDA
IEICE TRANSACTIONS on Communications
Publication Date: 1993/01/25
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Optical Communication
fiber amplifier, erbium-doped fiber amplifier, video distribution, subcarrier multiplexed system, optical communication,
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Noise properties in cascaded erbium-doped fiber amplifiers used in subcarrier multiplexed analog video distribution systems are experimentally examined. The noise dependency on signal wavelength is measured for a 4 stage EDFA cascade, and it is shown that an optical narrow bandpass filter is not necessary after each fiber amplifier for signal wavelength of 1.5511.560µm and that optical bandpass filters are necessary for shorter wavelength than 1.551µm to avoid the noise degradation by spontaneous-spontaneous beat noise. Finally, the attainable distribution loss is estimated for AM and FM video distribution systems.