1) cascaded sum-and difference frequency generation (SFG+DFG)
和频与差频级联
1.
Then put forward the AOWC studied in this paper——the wavelength conversion based on the cascaded sum- and difference frequency generation (SFG+DFG) in quasi-phase- matched (Q.
在此基础上提出了本文所研究的全光波长转换器——基于非线性光波导周期极化反转铌酸锂(PPLN)的和频与差频级联型二阶非线性效应的全光波长转换器,主要研究有: 理论研究:首先给出了非线性极化的弹簧模型,形象的说明了非线性极化强度的产生原理;然后从麦克斯韦方程组和物质方程出发,经过简单的近似推导出和频与差频级联型全光波长转换的瞬态耦合波方程;最后介绍了该波长转换中的关键技术——准相位匹配技术(QPM),并将其与双折射相位匹配技术进行了比较,进而更加明确了准相位匹配技术的优点。
2) cascaded second-harmonic generation and difference-frequency generation
级联倍频和差频
1.
The conversion mechanism relies on the amplification effect induced on the signal field via cascaded second-harmonic generation and difference-frequency generation, which makes the Mach-Zehnder interferometer unbalanced and leads to the output of r.
转换原理是非归零码信号光在级联倍频和差频过程中受到的放大作用引起马赫-曾德尔干涉仪的不平衡,进而通过干涉相消产生归零码信号光输出。
4) cascaded sum-and difference-frequency generation
级联和频与差频二阶非线性效应
1.
A) tunable wavelength conversion between picosecond pulses is experimentally demonstrated by using the cascaded sum-and difference-frequency generation(cSFG/DFG) in a periodically poled LiNbO_3(PPLN) waveguide.
实验研究了周期域反转铌酸锂光波导级联和频与差频二阶非线性效应(cSFG/DFG)皮秒脉冲间的可调谐波长转换。
6) Competition between frequency-difference and sum mixings
差频与和频的竞争
补充资料：工频突变量方向比较式纵联保护
工频突变量方向比较式纵联保护
direction comparison pilot protection system using sudden change of power frequency component
gongPIntub一an}一ong fongx一angb一]loosh一Zongl一an boohu工颇突变t方向比较式纵联保护(d ireetioneomParison pilot protection system using suddeneharge of power fr阅ueney eomponent)见方向比校式纵联保护。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条