Kleijn Emil, Williams Peter J, Whitbread Neil D, Wale Michael J, Smit Meint K, Leijtens Xaveer J M
COBRA Research Institute, Technische Universiteit Eindhoven 5600 MB Eindhoven, The Netherlands.
Opt Express. 2012 Sep 24;20(20):22660-8. doi: 10.1364/OE.20.022660.
Earlier it was observed that polarization rotation in an AWG built from birefringent waveguides can result in sidelobes in its response. This effect was measured in a polarization sensitive AWG with an orthogonal layout. Now we investigate through detailed simulation whether this effect also exists in polarization desensitised AWGs. It is shown that a dispersion compensated AWG does not suffer from a polarization sidelobe. Alternatively, the AWG can be designed to minimize polarization rotation to suppress the sidelobe.
早些时候观察到，由双折射波导构成的阵列波导光栅（AWG）中的偏振旋转会导致其响应出现旁瓣。这种效应在具有正交布局的偏振敏感AWG中得到了测量。现在我们通过详细的模拟来研究这种效应在偏振不敏感的AWG中是否也存在。结果表明，色散补偿的AWG不会受到偏振旁瓣的影响。或者，可以设计AWG以最小化偏振旋转来抑制旁瓣。
