Experimental study of four-channel tunable optical add/drop multiplexer based on fiber Bragg gratings

摘要

Two types of four-channel tunable optical add-drop multiplexers are demonstrated which are based on fiber Bragg gratings, optical circulators and switches. Both of them can dynamically select the drop channel or just bypass all WDM channels. The crosstalk from the adjacent channel is lower than $MIN@23 dB and the isolation between the drop and add port is higher than 40dB.