Publication IEICE TRANSACTIONS on ElectronicsVol.E74-CNo.7pp.2042-2048 Publication Date: 1991/07/25 Online ISSN: DOI: Print ISSN: 0916-8516 Type of Manuscript: PAPER Category: Opto-Electronics Keyword:
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Summary: Measurement results of two cascaded EDFAs (initial amplifier and boost amplifier) are reported for AM-FDM video distribution systems. A CNR of 55.5 dB and an output of 13.35 dBm (21.6mW) are measured. Distortion is measured by the two-tone method. On the basis of the measured distortion values, composite second-order distortion (CSO), composite triple beat distortion (CTB) and cross-modulation (XM) in a 40-channel transmission are estimated to be less than 56.9 dB, 66.3 dB and 74.6 dB, respectively. CNR values are strongly dependent on the erbium fiber length. They are degraded by light reflected from the input and output ports of the erbium fiber.