Procédé de dispersion chromatique temporelle, dispositif optique dispersif, et système de transmission à fibre optique utilisant ce dispositif.

摘要

A device according to the invention includes: - a diffraction grating (8) for separating the spectral components of a beam (6) to be processed in terms of angle, - a grating (11) the conjugate of the preceding one for restoring the parallelism of these components, - and a staircase mirror (14) for deflecting these components back to these same gratings (11, 8) while imposing different path lengths on them. The invention applies particularly to compensation for the dispersion of a line fibre (3) of a very long link between a transmitter (2) and a receiver (21).