We study modal characteristics of a customized ridge waveguide in Lithium Niobate designed to generate twin photons at telecom wavelength. A quantum analysis of SPDC predicts the possible down conversion processes and optimizes the input beam parameters for fundamental mode emission. Further, a Joint Spectral Amplitude (JSA) analysis ensures the generation of signal/idler at 1550 nm in the customized LN waveguide. A calculation of the parametric down conversion (PDC) signal power shows a dependence of L^(3/2) for a waveguide compared to a linear dependence in case of bulk crystal.

翻译：我们研究了硝酸锂定制脊浪制导物的模式特性,设计该制导物在电信波长时产生双光子。国家和平与发展委员会的量子分析预测了可能的下向转换过程,优化了基本模式排放的输入光束参数。此外,联合光谱放大分析确保了在定制的LN波导体1550纳米时生成信号/idler。对参数下向转换信号功率的计算表明,相对于散装晶体的线性依赖性而言,对波导依赖L ⁇ (3/2)。