Title :
Design of Thermally Poled Twin-Core Fiber Coupler With Electrical Tunability
Author :
Lin Huang ; Guobin Ren ; Yixiao Gao ; Bofeng Zhu ; Wanjing Peng
Author_Institution :
Key Lab. of All Opt. Network & Adv. Telecommun. Network of EMC, Beijing Jiaotong Univ., Beijing, China
Abstract :
Tunable coupler based on thermally poled twin-core fiber (TCF) with a hole-core-core-hole configuration was proposed in this letter. The thermal poling process therein was investigated based on the 2-D charge dynamics model. Effective χ(2) in the twin-cores pointing toward opposite directions were introduced. By subjecting the poled TCF to modulating voltage, the tunability of coupling ratio between the twin-cores was investigated. The results indicate that the coupling characteristics of thermally poled twin-cores could be controlled flexibly by modulating voltage, and consequently achieving a stable and highly compacted electrically tunable TCF coupler.
Keywords :
optical design techniques; optical fibre couplers; optical fibre fabrication; optical modulation; optical tuning; 2D charge dynamic model; electrical tunability; hole-core-core-hole configuration; thermal poling process; thermally poled twin-core fiber coupler design; voltage modulation; Couplers; Electric fields; Equations; Mathematical model; Optical fiber couplers; Optimized production technology; Fiber nonlinear optics; Thermal poling; Twin-core fiber coupler; fiber nonlinear optics; twin-core fiber coupler;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2015.2401053
