Bidirectional stacked 40-Gb/s WDM-OFDM-PON system using the electronic controlled liquid crystal tunable filter

A symmetric 40-Gb/s stacked WDM-OFDM-PON system by using our designed TBF for downstream wavelength selection and upstream chirp management is experimentally demonstrated. It can support 25-km fiber transmission with 1:256 split ratios.

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