Tm^(3+)掺杂S波段波导放大器的光路设计与增益预期  

Optical Path Design and Evaluation in Tm^(3+) Doped Glass Channel Waveguide for S-Band Amplification

作　　者：王木[1] 赵睿途[1] 林海[1] 赵昕[1] 

机构地区：[1]大连工业大学无机非金属材料研究所,辽宁大连116034

出　　处：《光学学报》2011年第5期210-215,共6页Acta Optica Sinica

基　　金：辽宁省教育厅高等学校科学研究基金(2009A080)资助课题

摘　　要：为实现S波段集成光波导放大器的高增益,以8 cm×6 cm尺寸的Tm3+掺杂锗酸盐玻璃为基片设计了S型,U型和F型弯曲结构波导。采用光束传播法(BPM)对弯曲波导进行损耗模拟,得到最优弯曲半径为1.90 cm时,损耗系数为0.04 dB/cm。在1482 nm波长处,F型波导的增益为13.01 dB,其值高于U型(8.21 dB)和S型(4.22 dB)波导,约是普通直波导(3.84 dB)的3倍。结果表明合理的光路设计(F型)可以大幅提高Tm3+掺杂锗酸盐玻璃平面光波导的光学增益。To achieve high-gain S-band waveguide amplifiers with integrated configuration,S-,U-,and F-bend waveguides based on Tm3＋-doped germanate glasses have been designed in an 8 cm×6 cm substrate.Using simulated-bend method,the optimal radius for the curved structure is offered to be 1.90 cm with loss coefficient of 0.04 dB/cm.For the F-bend waveguide,the internal gain at 1482 nm is derived to be 13.01 dB,which is higher than the values of 8.21 and 4.22 dB in the U-and S-bend waveguides,respectively,and nearly three times higher than that of the straight one（3.84 dB）.Simulation results indicate that the reasonable optical path design can considerably enhance the optical gain in Tm3＋-doped germanate glass channel waveguides.

关 键 词：平面光波导 BeamPROP模拟 光路设计 光学增益 

分 类 号：TQ133.3[化学工程—无机化工] TN814[电子电信—信息与通信工程]