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DWDM-based FTTC access network

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4 Author(s)
Soo-Jin Park ; Access Network Lab., Korea Telecom, Daejeon, South Korea ; Sangin Kim ; Kil-Ho Song ; Jong-Rak Lee

This paper proposes a dense wavelength division multiplexing (DWDM)-based fiber-to-the-curb (FTTC) access network architecture for broad-band services. The reaches of four carrierless amplitude phase (4-CAP)-modulated very high-speed digital subscriber line (VDSL) signals over the hybrid-fiber twisted pair (HFTP) were simulated. The simulation results show that the effect of noise from the optical link is negligible as long as the signal-to-noise ratio (SNR) of the optical link output signal is 9-10 dB greater than the required SNR of a VDSL modem. The bit error rate (BER) of the VDSL transmission over HFTP was measured. Measurement results show that insertion of the optical link between the modem and twisted pair has no adverse effect on the transmission

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Lightwave Technology, Journal of  (Volume:19 ,  Issue: 12 )