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首页> 外文期刊>Optics Letters >High-order photonic differentiator employing on-chip cascaded microring resonators
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High-order photonic differentiator employing on-chip cascaded microring resonators

机译：采用片上级联微环谐振器的高阶光子微分器

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摘要

We propose and experimentally demonstrate a high-order photonic differentiator using on-chip complementary metal oxide semiconductor-compatible cascaded microring resonators, including first-, second-, and third-order differentiators. All the microring resonator units have a radius of 150 μm and a free spectral range of 80 GHz. The microring resonator can implement the first-order derivative of the optical field near its critical coupling region. Hence higher-order differentiation can be obtained by cascading more microring units on a single chip. For the periodical Gaussian optical pulse injection, the average deviations of all differentiators are less than 6.2%. The differentiation of pseudo-random bit sequence signals at 5 Gbit/s is also demonstrated. Our scheme is a compact and low-power-consumption solution since the cascaded microring units are fabricated with compact size on the silicon-on-insulator substrate.
机译：我们提出并实验证明了使用片上互补金属氧化物半导体兼容的级联微环谐振器（包括一阶，二阶和三阶微分器）的高阶光子微分器。所有微环谐振器单元的半径为150μm，自由光谱范围为80 GHz。微环谐振器可以在其临界耦合区域附近实现光场的一阶导数。因此，可以通过在单个芯片上级联更多的微环单元来获得更高阶的微分。对于周期性的高斯光脉冲注入，所有微分器的平均偏差均小于6.2％。还演示了5 Gbit / s的伪随机位序列信号的区分。我们的方案是一种紧凑且低功耗的解决方案，因为级联微环单元是在绝缘体上硅衬底上以紧凑尺寸制造的。

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