Abstract
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 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.
© 2013 Optical Society of America
Full Article | PDF ArticleMore Like This
Aoling Zheng, Jianji Dong, Linjie Zhou, Xi Xiao, Qi Yang, Xinliang Zhang, and Jianping Chen
Opt. Lett. 39(21) 6355-6358 (2014)
Jianji Dong, Aoling Zheng, Dingshan Gao, Lei Lei, Dexiu Huang, and Xinliang Zhang
Opt. Express 21(6) 7014-7024 (2013)
Sisi Tan, Lei Xiang, Jinghui Zou, Qiang Zhang, Zhao Wu, Yu Yu, Jianji Dong, and Xinliang Zhang
Opt. Lett. 38(19) 3735-3738 (2013)