A MULTI-ORDER DISPERSION COMPENSATION DEVICE

摘要

The present invention provides a multi-order dispersion compensation device (10) comprising a plurality of dispersion compensation units (11, 12) of different order n which are concatenated by a circulator (13), each of the units (11, 12) comprising at least two chirped Bragg gratings of order n+1 which are concatenated and have opposing group delay profiles. The device may include means for adjusting the dispersion compensation of each unit independently by heating or cooling and/or by the application of mechanical stress to the gratings.