Digital data transmission process, involves using two distinct wavelengths of non-guided light beam to transmit digital data bit, and feeding light sources by two supply signals that are modulated in amplitude based on bit to be transmitted

摘要

The process involves using two distinct wavelengths of a non-guided light beam to transmit digital data bit. Two light sources e.g. light emitting diodes, designed to emit lights with distinct respective wavelengths are used. The light sources are fed by two respective supply signals which are in opposite phase and modulated in amplitude according to the digital data bit to be transmitted. Independent claims are also included for the following: (A) a device for transmission of digital data bit through a non guided light beam (B) a process for alignment of respective optical axes of two transceivers of non guided light beam for data bit transmission (C) a device for alignment of respective optical axes of two transceivers of non guided light beam for data bit transmission.