ファイバグレーティングにおける位相反転効果と光スイッチヘの応用

抄録

We propose an interferometric-type multi-state optical switch and an interferometric-type digital performance optical switch using fiber bragg grating (FBG) and the phase reversal effect. The effect is a reversing phenomenon of optical phase difference between the reflected and transmitted light from an FBG on a reflectivity spectrum dip between the main reflection band and first sideband. By combining this effect an reflectivitychange, the multi-state swich including only a single FBG can perform as a 4-state switch. In this paper we describe the principle of the phase reversal effect and some novel optical switch structures, and also the results of experimental examination.