The Characteristic Matrix Sample Simulation developed to simulate hybrid filters (made of thin film multilayer filters deposited or glued onto the clived faces of Bragg gratings in waveguides (fig. 1)) is adapted for the case of chirped gratings and gaussian gratings. The principle of three new kinds of hybrid filters is demonstrated. Hybrid filters with long chirped Bg are useful as multiple passband bandpass filters giving new possibilities in term of separation of the peaks and spectral rejection. This work points out again the considerable interest of hybrid filters in order to have a single passband with simultaneously a broad rejection.
© 2003 Optical Society of America