Patent ID: 7380993
Filing Date: 2008-06-03
Classification: H04B,H04J,H04L

Abstract:
1. An optical transmitter for converting and coupling an information-containing electrical signal with an optical fiber comprising: an electrical input for coupling with an external electrical cable or information system device having a plurality of parallel data lines and for transmitting information-containing electrical communications signals over said data lines, and a fiber optic connector adapted for coupling with an external optical fiber for transmitting an optical communications signal; a modulator for converting between an information-containing electrical signal on each data line and a pulse amplitude modulated signal corresponding to the binary electrical signal; a signal timing circuit coupled to said modulator for aligning the data signal to a predetermined clock signal; an electro-optical subassembly coupled to each respective timer circuit for converting between the information-containing electrical signal and a modulated optical signal corresponding to the electrical signal at a predetermined wavelength; and a multiplexer for multiplexing the respective optical beams into a single optical beam for transmission over the optical fiber, wherein said pulse amplitude modulated signal is a multilevel digital signal.