Patent ID: 7324755
Filing Date: 2008-01-29
Classification: F16K,H04J

Abstract:
1. An optical code division multiple access transmission system comprising: an optical comb generator for producing multiple discrete spectral optical signal components comprising a plurality of equally spaced wavelength components; a serial-to-parallel converter connected with the optical comb generator for receiving the signal components serially and for converting a selected group of the serial signal components into parallel signal components; an optical free-space code mask connected with the serial-to-parallel converter for receiving the parallel signal components and for selecting two separate groups of optical signal components to generate two subsets of the signal components, each for representing an associated binary data value from a data stream, wherein the code mask comprises a two-dimensional mirror array including a plurality of optical MEM mirrors for selectively reflecting each of the optical signal components in one of two different directions when set to “on” or “off” position; an optical combining device positioned to receive each of the subsets of signal components, and to combine the individual signal components of each of the subsets, to form two separate combined signal component subsets; and a 2×1 switch having two inputs, each input positioned to receive one of the combined signal component subsets, and to selectively gate the combined signal component subsets to the output based on user data binary bits, thereby generating a modulated bipolar user signal.