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CSO/CTB performances improvement in a bi-directional DWDM CATV system

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3 Author(s)
Hai-Han Lu ; Inst. of Electro-Opt. Eng., Nat. Taipei Univ. of Technol., Taiwan ; Wen-Jen Wang ; Wen-Shing Tsai

We proposed and demonstrated a four-wavelength bi-directional dense-wavelength-division-multiplexing (DWDM) CATV system that uses chirped fiber gratings (CFGs) as the dispersion compensation devices to reduce the fiber dispersion and cross-phase modulation (XPM)-induced crosstalk simultaneously. Our proposed system not only reduces the required number of fibers, but also offers the advantages of capacity doubling. Excellent performances of carrier-to-noise ratio (CNR) ≥ 50 dB, composite second order (CSO) ≥ 72 dB and composite triple beat (CTB) ≥ 69 dB were obtained over a 50-km single-mode fiber (SMF) transport.

Published in:

IEEE Transactions on Broadcasting  (Volume:50 ,  Issue: 4 )