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Integrated nanophotonic wavelength routers based on intelligent algorithm

Posted on 2019-10-11 - 17:07
Nanophotonic wavelength router, which can separate and steer different incident optical wavelengths into different output ports, plays key roles in many applications of integrated photonic devices. We design and experimentally demonstrate ultrasmall broadband wavelength routers based on an intelligent algorithm by combining the genetic algorithm and the finite element method. The size of the device is only 1.4 μm × 1.8 μm around the optical communication range, which is the smallest one ever demonstrated experimentally. The maximum transmission is 98% in the simulation and 71% in the experiment. Moreover, various wave-length routers with different materials (both dielectric and metal), different structures, different output ports and different operation band can be conveniently designed based on the intelligent algorithm. The av-erage position error tolerance for each cell structure is about ±20 nm for all the wavelength routers de-signed by our intelligent algorithm, which satisfies the current nanofabrication technology. This work pro-vides a universal platform for the realization of nanophotonic wavelength routers, and paves a way for the design and integration of nanophotonic devices.

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AUTHORS (10)

Zhouhui Liu
Xiaohong Liu
Zhiyuan Xiao
Cuicui Lu
Hui-Qin Wang
You Wu
Xiaoyong Hu
Yong-Chun Liu
Hongyu Zhang
Xiangdong Zhang
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