Abstract: A method for adaptive configuration of a transmission signal in a coherent Wavelength-Division Multiplexing-Passive Optical Network (WDM-PON) having an optical line termination and a plurality of end nodes includes: (a) generating, by at least m lasers, the transmission signal; (b) monitoring the ka active end nodes; (c) if the number of active end nodes is reduced to ka?(m?1)*p: reassigning active end nodes associated with a spectral range of a laser to be switched off to a respective free spectral range of another laser, announcing the new assignment of the spectral ranges by transmitting a message to one or more end nodes assigned to the laser to be switched off, and switching off the laser to be switched off; and (d) if the number of active end nodes increases to ka>m*p: switching on an additional laser.

Abstract: A method for adaptive configuration of a transmission signal in a coherent Wavelength-Division Multiplexing-Passive Optical Network (WDM-PON) having an optical line termination and a plurality of end nodes includes: (a) generating, by at least m lasers, the transmission signal; (b) monitoring the ka active end nodes; (c) if the number of active end nodes is reduced to ka?(m?1)·p: reassigning active end nodes associated with a spectral range of a laser to be switched off to a respective free spectral range of another laser, announcing the new assignment of the spectral ranges by transmitting a message to one or more end nodes assigned to the laser to be switched off, and switching off the laser to be switched off; and (d) if the number of active end nodes increases to ka>(m?1)·p: switching on an additional laser.

Abstract: From an real valued OFDM signal (S0(t)) is a baseband signal (SB(t)) derived and converted into a complex single sideband modulation signal (n(t)). This is modulated onto an optical carrier (fOC) to generate a SSB transmission signal (SOT) having a small bandwidth an carrying the information in the envelope or in the power of the envelope. According to the modulation direct detection is possible. Only a small bandwidth is necessary for the transmission.

Abstract: From an real valued OFDM signal (S0(t)) is a baseband signal (SB(t)) derived and converted into a complex single sideband modulation signal (n(t)). This is modulated onto an optical carrier (fOC) to generate a SSB transmission signal (SOT) having a small bandwidth an carrying the information in the envelope or in the power of the envelope. According to the modulation direct detection is possible. Only a small bandwidth is necessary for the transmission.