Method of transmitting an optical data signal via a fiber optical medium in opposite directions at the same carrier wavelength

Abstract

This invention relates to fiber optic communication engineering and can be used in fiber optic communication systems for creating several independent communication channels.

1 . A method of transmitting an optical data signal via a fiber optical medium in opposite directions at the same carrier wavelength, comprising:
 providing a fiber-optical line comprising passive optical elements and is terminated with transparent bidirectional signal dividers for input/output of data signals to and/or from the fiber-optical line, wherein preliminarily or during implementation of the method, an overall reflected signal power reaching the input of an optical receiver is measured or calculated for a specific optical communication system, wherein a value is compared with a maximum noise power acceptable for a data signal extraction by the optical receiver, and then, by excluding and/or redistributing highly reflecting elements in a path of an optical signal between a transmitter and the optical receiver, or by replacing the passive optical elements for lower reflecting ones, wherein an overall power of a reflected signal reaching the input of the optical receiver is lowered to a level that is acceptable for separating a target optical signal from an overall optical signal reaching the input of the optical receiver and, as a result, the transmission of the optical signal is achieved in the opposite directions at the same carrier wavelength for the specific optical communication system.