Abstract

Praseodymium-doped-fluoride fiber amplifiers (PDFAs) have been considered for use in multichannel VSB-AM^1–3 and FM⁴ video signal transmission because a great deal of 1.3-μm zerodispersion single-mode fiber (SMF) has been already installed. PDFAs can increase SMF transmission length or branch number; however, SMF transmission performance has been examined only for FM video signals,⁴ the CNR requirement of which is low, say, 17 dB, and there are no reports to date on SMF transmission of VSB-AM video signals, which requires high CNR, 51 dB in the trunk line, for example.

© 1995 Optical Society of America