| Title |
Fiber-Optic Interleaving Filter Based on Polarization Beam Splitter and Fiber Coupler |
| Authors |
Jang Wook ; Yong-Wook Lee |
| Keywords |
Optical Fiber ; Multiwavelength ; Filter ; Polarization Beam Splitter ; Coupler |
| Abstract |
By incorporating a polarization beam splitter and fiber coupler, we propose a fiber-optic multiwavelength-switchable interleaving filter that can function as a polarization-independent transmission or reflection-type one. The proposed filter consists of a polarization beam splitter and a Sagnac birefringence loop that is composed of a 50:50 coupler, polarization-maintaining fibers, and two quarter-wave plates. In the proposed filter, a transmission-type filter with a channel isolation ＞ 18[㏈] or a reflection-type one with a channel isolation ∼3[㏈], whose channel spacing and switching displacement were 0.8 and 0.4[㎚] in common, respectively, could be obtained. Channel interleaving operation could be performed by the proper control of waveplates within the Sagnac birefringence loop. |