4Haitian Lu,ChingTingLee.Drectlymodulated CATVtransmission systems using half split band and wavelength division multiplexing techniques[J].IEEE Photon.Tecnol.Lett,1998.10(11):1653-1655.
5Deming Liu,Baomin Hu,Hal Liu.Low-cost DWDM technology used for the Ethernet passive networ(EPOI)[J].Conference on Active and Passive Optical Components for WDM Communications,Jul29-Augl,2002:466-468.