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The optimal amplifier spacing required for the best system performance is calculated. The analysis considers the effect of amplified spontaneous emission noise, post-amplifier loss, and polarisation dependent gain on the optimal spacing. The optimal spacing was found to be a few tens of kilometres depending on the specific system.
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Mazurczyk, V.J., and Wysocki, P.F.: Private Communication.
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Mazurczyk, V.J., Wysocki, P.F.: `Polarization hole burning in erbium-doped fiber amplifiers', Paper CPD26, Cleo 93, 1993, Baltimore, Maryland.
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Taylor, M.G.: `Observation of new polarization dependence effect in long haul optically amplified system', Post-deadline Paper PD5, OFC '93, 1993, San Jose, California, Paper PD5.
http://iet.metastore.ingenta.com/content/journals/10.1049/el_19931375
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