Abstract
We have experimentally demonstrated a novel transmission system for
seamless integration of ROF with centralized lightwave OFDM-WDM-PON based on
an integrated external modulator. At the one of two arms of the integrated
external modulator, the optical carrier suppression (OCS) is realized to
generate 40–GHz optical millimeter-wave (mm-wave) and up-converted
baseband data signal as wireless signal. In another arm of the integrated
external modulator, 16 quadrature amplitude modulation intensity-modulated
OFDM signals at 10 Gbit/s are used for downstream transmission as wired
signal based on double sideband modulation. By using one intensity modulator
(IM), the downstream RF OFDM signal is remodulated for upstream
on–off keying (OOK) data at 2.5 Gbit/s because of its downstream
RZ shape waveform. The 10-Gbit/s wired signal, 2.5-Gbit/s wireless signal,
and 2.5-Gbit/s upstream signal have been transmitted over 20-km single mode
fiber (SMF) successfully.
© 2009 US
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