Chirped Bragg gratings have been used to produce fiber filters successfully. Both multi-passband Fabry-Perot and single passband Moire resonators have been demonstrated. By concatenating chirped gratings with Moire resonators the stopband of the single passband can be broadened considerably. Losses caused by outcoupling and by absorption have a significant impact on the finesse of the resonators. These losses can be minimised to give higher finesse resonators by using fibers with high numerical apertures and by replacing hydrogen with deuterium in the photsensitising process.
|Journal||IEE Colloquium (Digest)|
|Publication status||Published - 1995|