The underestimated challenges of burst-mode WDM transmission in TWDM-PON
Intra-channel cross-talk from ONUs induced background ASE. Inter-channel cross-talk from non-ideal filter suppression between wavelength channels. Fast frequency drift of laser in burst-mode operation. Power dynamic range of optical pre-amplifier as well as of photodiode in the OLT-Rx. Physical layer operation and maintenance to avoid ONU rogue behavior in wavelength and time domain.
twdm-pon tdm-pon access networks passive optical networks