Optical multiplex systems

HELECTRICITY H04Electric communication H04JMULTIPLEX COMMUNICATION

H04J14/00Optical multiplex systems

H04J14/002Coherencemultiplexing H04J14/005Optical Code Multiplex H04J14/007Orthogonal Optical Code Multiplex H04J14/02Wavelength-division multiplex systems H04J14/0201Add-and-drop multiplexing H04J14/0202Arrangements therefor H04J14/0204Broadcast and select arrangements H04J14/0205Select and combine arrangements H04J14/0206Express channels arrangements H04J14/0208Interleaved arrangements H04J14/0209Multi-stage arrangements H04J14/021Reconfigurable arrangements H04J14/0212using optical switches or wavelength selective switches [WSS] H04J14/0213Groups of channels or wave bands arrangements H04J14/0215Architecture aspects H04J14/0216Bidirectional architectures H04J14/0217Multi-degree architectures H04J14/0219Modular or upgradable architectures H04J14/022For interconnection of WDM optical networks H04J14/0221Power control H04J14/0223Conversion to or from optical TDM H04J14/0224Irregular wavelength spacing H04J14/0226Fixed carrier allocation H04J14/0227Operation, administration, maintenance or provisioning [OAMP] of WDM networks H04J14/0228Wavelength allocation for communications one-to-all H04J14/023in WDM passive optical networks [WDM-PON] H04J14/0232for downstream transmission H04J14/0234using multiple wavelengths H04J14/0235for upstream transmission H04J14/0236using multiple wavelengths H04J14/0238Wavelength allocation for communications one-to-many H04J14/0239in WDM-PON sharing multiple downstream wavelengths for groups of optical network units [ONU] H04J14/0241Wavelength allocation for communications one-to-one H04J14/0242in WDM-PON H04J14/0245for downstream transmission H04J14/0246using one wavelength per ONU H04J14/0247Sharing one wavelength for at least a group of ONUs H04J14/0249for upstream transmission H04J14/025using one wavelength per ONU H04J14/0252Sharing one wavelength for at least a group of ONUs H04J14/0254Optical medium access H04J14/0256at the optical channel layer H04J14/0257Wavelength assignment algorithms H04J14/0258Wavelength identification or labelling H04J14/026using WDM channels of different transmission rates H04J14/0261at the optical multiplex section layer H04J14/0263Multiplex section layer wavelength assignment algorithms H04J14/0264Multiplex identification or labelling H04J14/0265Multiplex arrangements in bidirectional systems H04J14/0267Optical signaling or routing H04J14/0268Restoration of optical paths H04J14/0269using tables for routing H04J14/0271Impairment aware routing H04J14/0272Transmission of OAMP information H04J14/0273using optical overhead H04J14/0275using an optical service channel H04J14/0276using pilot tones H04J14/0278WDM optical network architectures H04J14/0279WDM point-to-point architectures H04J14/028WDM bus architectures H04J14/0282WDM tree architectures H04J14/0283WDM ring architectures H04J14/0284WDM mesh architectures H04J14/0286WDM hierarchical architectures H04J14/0287Protection in WDM systems H04J14/0289Optical multiplex section protection H04J14/029Dedicated protection at the optical multiplex section (1+1) H04J14/0291Shared protection at the optical multiplex section (1:1, n:m) H04J14/0293Optical channel protection H04J14/0294Dedicated protection at the optical channel (1+1) H04J14/0295Shared protection at the optical channel (1:1, n:m) H04J14/0297Optical equipment protection H04J14/0298with sub-carrier multiplexing [SCM] H04J14/04Mode multiplex systems H04J14/06Polarisation multiplex systems H04J14/08Time-division multiplex systems H04J14/083Add and drop multiplexing H04J14/086Medium access