Speed limit of all-optical gate switches using cascaded second-order nonlinear effect in quasi-phase-matched LiNbO3 devices
Speed limit of all-optical gate switches using cascaded second-order nonlinear effect in quasi-phase-matched LiNbO3 devices
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DOI：
10.1109/lpt.2002.801074
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发表时间：
2002-11
影响因子：
2.6
通讯作者：
Y. Fukuchi;T. Sakamoto;K. Taira;K. Kikuchi;D. Kunimatsu;A. Suzuki;H. Ito
中科院分区：
文献类型：
--
作者：
Y. Fukuchi;T. Sakamoto;K. Taira;K. Kikuchi;D. Kunimatsu;A. Suzuki;H. Ito
In all-optical gate switches that employ the cascaded second-order nonlinear effect in quasi-phase-matched (QPM) LiNbO/sub 3/ devices, walkoff between the fundamental and second harmonic pulses is very large. The authors experimentally show that crosstalk of the switch induced by such walkoff limits the switching speed, but that the switching speed can significantly be enhanced by walkoff compensation. Using a 20-mm-long QPM LiNbO/sub 3/ waveguide device, the authors switch one of twin pulses separated by 6.25 ps without crosstalk, showing the possibility of switching a 160-Gb/s signal.
