High rate digital word fibre optic network having signals principal node received and optical signal converting/coupler with optical interference filter passing individual user signals.

摘要

The optical transmission method has a principal node (1) receiving signals from several wires and converting them to optical signals for optical transmission (2). Multiplexed optical signals are transmitted to a coupler (3). Individual signals (4) are passed from the coupler to the individual user. The coupler is formed by using an optical interference filter.