| 摘要 |
N-slit interferometry is applied to generate at least one optical signal representative of an alphabetical or numerical character, symbol, or the like. In particular, the present invention relates to an optical communication system for generating an interferometric character, comprising: a light source emitting a beam of coherent light directed along an optical path; a detector disposed in the optical path; a transmission grating disposed in the optical path intermediate the light source and the digital detector, and a multiple-prism beam expander disposed in the optical path intermediate the light source and the transmission grating adapted to illuminate the transmission grating to generate an interferometric pattern on the detector, the interferometric pattern being representative of the character.
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