Fiber optic components, namely, multiplexers, demultiplexers, variable optical attenuators, switches, polarization controllers, polarization combiners, dispersion compensators, modulators, interleavers, couplers, optical power monitors, isolators, circulators and optical fiber gratings; fiber optic subsystems, namely, integrated modules comprised of fiber optic components and electronic devices and software, namely channel equalization modules, optical performance monitors, optical cross connects, matrix switches, polarization mode dispersion compensators, optical amplifiers, transmitters and receivers