Patent ID: 7912372

Claim:
A passive optical network, comprising: a broadband light source in a central office to provide broadband incoherent light; a multiplexer connected to the central office via an optical fiber for filtering the light transmitted from the broadband light source according to wavelengths and multiplexing upstream signals to provide a first plurality of wavelengths; at least one splitter coupled to the multiplexer for branching a wavelength of the first plurality of wavelengths and combining the upstream optical signals; and a plurality of wavelength-locked Fabry-Perot laser diodes connected to the at least one splitter to share the branched wavelength that is injected through the splitter to determine an oscillation wavelength of the plurality of wavelength-locked Fabry-Perot laser diodes, the wavelength-locked Fabry-Perot laser diodes capable of performing direct and analog modulation, and a control unit to directly modulate lights of the Fabry-Perot laser diodes and transmitting modulated lights to subscribers using time division multiplexing.