Ahlawat Meenu, Tehranchi Amirhossein, Pandiyan Krishnamoorthy, Cha Myoungsik, Kashyap Raman
Department of Engineering Physics, Ecole Polytechnique de Montreal, Montreal, QC, Canada.
Opt Express. 2012 Nov 19;20(24):27425-33. doi: 10.1364/OE.20.027425.
We experimentally demonstrate tunable multiple-idler wavelength broadcasting of a signal to selective channels for wavelength division multiplexing (WDM). This is based on cascaded χ(2) nonlinear mixing process in a novel multiple-QPM 10-mm-long periodically poled LiNbO3 having an aperiodic domain in the center. The idlers' spacing is varied utilizing detuning of the pump wavelength within the SHG bandwidth. The temperature-assisted tuning of QPM pump wavelengths allows shifting the idlers together to different set of WDM channels. Our experimental results indicate that an overall idler wavelength shift of less than 10 nm realized by selecting pump wavelengths via temperature tuning, is sufficient to cover up to 40 WDM channels for multiple idlers broadcasting.
我们通过实验证明了可将信号的可调谐多闲频波长广播到用于波分复用（WDM）的选择性信道。这是基于在一种新型的、中心具有非周期畴的10毫米长的多量子拍频（QPM）周期性极化铌酸锂中进行的级联χ(2)非线性混合过程。利用泵浦波长在二次谐波产生（SHG）带宽内的失谐来改变闲频的间距。QPM泵浦波长的温度辅助调谐可使闲频一起转移到不同的WDM信道组。我们的实验结果表明，通过温度调谐选择泵浦波长实现的小于10纳米的整体闲频波长偏移，足以覆盖多达40个用于多闲频广播的WDM信道。
