OPTICAL INTERLEAVING FILTERING DEVICE AND METHOD FOR REALIZING FUNCTION OF POLARIZATION WAVE-COMBINING

摘要

An optical interleaving filtering device and method for realizing the function of polarization wave-combining are provided. The optical interleaving filtering device includes: a polarization wave-combiner (21,31,32), an optical circulator (22,33,34) and a section of polarization maintaining optical fiber (23,35,36) engraved with Bragg gratings (24,241,351,352,361,362). The polarization wave-combiner (21,31,32) is provided with an input end (26) of X polarization direction and an input end (27) of Y polarization direction, and the output end (211,B1,C1) of the polarization wave-combiner (21,31,32) is connected with any end of the polarization maintaining optical fiber (23,35,36) via the optical circulator (22,33,34) whose output end (A3,B3,C3) is used as the output end of the device. The optical interleaving filtering device has a simple structure and can save cost, and the performance of the wave divided multiplexing system is improved.