光学学报, 2011, 31 (11): 1113001, 网络出版: 2011-10-24
质子交换LiNbO3波导调制器多模截止波长的测试技术研究
Research for Measuring the Multi-Mode Cut-Off Wavelength of LiNbO3 Waveguide Modulator Fabricated by Proton Exchange
导波光学 光纤陀螺 Y分支LiNbO3波导 多模截止波长 guided wave optics fiber optic gyroscope Y-branch LiNbO3 waveguide multi-mode cut-off wavelength
摘要
提出并实验了一种采用倒置输入的结构来测定Y分支LiNbO3波导相位调制器的多模截止波长的新方法，模式耦合分析表明，倒置输入的Y分支波导的多模传输的输出功率具有随波长变动发生振荡的特征，该特征可用于定量判定多模截止波长。方法的有效性得到了波束传播法(BPM)仿真和样品实验两方面的验证。
Abstract
An inverted structure of Y-branch LiNbO3 waveguide for measuring the multi-mode cut-off wavelength of the phase modulator is proposed and experimented. Analysis of the mode coupling shows that the output power of the inverted Y-branch waveguide is cyclical fluctuated with the wavelength when the waveguide is in multi-mode. And this characteristics can be used to judge the multi-mode cut-off wavelength. The validity of the method has been verified by simulation and experiment with sample.
张广, 陈抱雪, 傅长松, 隋国荣, 王关德. 质子交换LiNbO3波导调制器多模截止波长的测试技术研究[J]. 光学学报, 2011, 31(11): 1113001. Zhang Guang, Chen Baoxue, Fu Changsong, Sui Guorong, Wang Guande. Research for Measuring the Multi-Mode Cut-Off Wavelength of LiNbO3 Waveguide Modulator Fabricated by Proton Exchange[J]. Acta Optica Sinica, 2011, 31(11): 1113001.
PDF全文
