9 FIBER OPTIC COMMUNICATION DEVICES, NAMELY OPTICAL FILTERS, OPTICAL MODULATORS, OPTICAL DISPERSION CONTROLLERS, OPTICAL DISPERSION COMPENSATORS, OPTICAL MULTIPLEXERS, OPTICAL DEMULTIPLEXERS; OPTICAL, THERMAL, MECHANICAL AND ELECTRONIC CONTROLS FOR MODIFYING THE SPECTRAL CHARACTERISTICS OF FIBER OPTIC COMMUNICATIONS DEVICES; HARDWARE AND SOFTWARE FOR REGULATION AND MANAGEMENT OF OPTICAL, THERMAL, MECHANICAL AND ELECTRONIC CONTROLS; FIBER OPTIC COMMUNICATION SYSTEMS, SUB-SYSTEMS AND INSTRUMENTS, NAMELY OPTICAL FIBER CABLES, OPTICAL TRANSMITTERS, OPTICAL RECEIVERS, OPTICAL RELAY STATIONS AND OPTICAL SWITCHES; AND RELATED USERS MANUALS