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A hybrid DWDM system for CATV and 256‐QAM transport in the campus

In this paper, we propose and demonstrate a 4‐wavelength hybrid dense‐wavelength‐division‐multiplexing (DWDM) system for CATV and 256‐QAM transport over a 4‐km multimode fiber (MMF) in the campus. Good performances of carrier‐to‐noise ratio (CNR), composite second order (CSO) and composite triple beat (CTB) were obtained for CATV video signals; and low bit error rate (BER) had been achieved for 256‐QAM digital passband signals over a 4‐km MMF transport. This technique makes possible analog video transmission and gigabit Ethernet to the classrooms through the existed MMF in the campus. © 2002 Wiley Periodicals, Inc. Microwave Opt Technol Lett 35: 000–000, 2002; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10533