Modeling and optimization of low chirp LiNbO3 Mach-Zehnder modulators with an inverted ferroelectric domain section
Modeling and optimization of low chirp LiNbO3 Mach-Zehnder modulators with an inverted ferroelectric domain section
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DOI：
10.1109/jlt.2004.826385
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发表时间：
2004-05-01
影响因子：
4.7
通讯作者：
Grossard, N
中科院分区：
文献类型：
--
作者：
Courjal, N;Porte, H;Grossard, N
提出了共面波导电极下的畴反转来改善Z切LiNbO 3马赫-曾德尔调制器的频率啁啾特性。这是通过引入与反转铁电畴串联的反相电极部分来实现的。该方法为实现具有预定啁啾参数的宽带单驱动调制器开辟了道路。在10 Gb/s下获得的实验结果证实了降低Z切调制器啁啾参数的可能性，同时保持半波电压低于5 V。
Domain inversion under coplanar waveguide electrodes is proposed to improve the frequency-chirping behavior of Z-cut LiNbO3 Mach-Zehnder modulators. This is achieved by introducing a phase reversal electrode section in tandem with inverted ferroelectric domains. The method opens the way to broad-band single-drive modulators with predetermined chirp parameter. The experimental results obtained at 10 Gb/s confirm the possibility of lowering the chirp parameter of a Z-cut modulator, while keeping a halfwave voltage lower than 5 V.