In this present work, photonic crystal based ultra-high-speed encoder is proposed for optical computing applications. The designed logic device contains dual nanocavity coupled ring resonator, reflector and five waveguides in a square lattice with barium titanate rods arranged in a nanostructure platform. The encoding device is working based on the interference and resonance effect. The photonic band diagram and performance characteristics of the encoder, namely, bit rate, ON–OFF ratio and delay time are analyzed by using a plane wave expansion and finite difference time domain methods. The simulation results show that the designed encoder is capable of functioning four logic states precisely. Furthermore, the presented device has numerous advantages such as low power consumption, high data rate and a very low footprint. The response time and total chip area of the proposed encoder are 369.3 fs and 13.2 μm × 13.2 μm, respectively. Hence, this simple nano-logic platform is extremely suitable for photonic logic processors.

中文翻译：

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使用光子晶体环形谐振器的高速纳米光学编码器

在本工作中，提出了基于光子晶体的超高速编码器，用于光学计算应用。设计的逻辑器件包含双纳米腔耦合的环形谐振器，反射器和五个格子状的波导，钛酸钡棒排列在纳米结构平台中。编码设备基于干扰和共振效应而工作。使用平面波扩展和时域有限差分法分析了编码器的光子能带图和性能特征，即比特率，开-关比和延迟时间。仿真结果表明，所设计的编码器能够精确地实现四种逻辑状态。此外，所提出的设备具有许多优点，例如低功耗，高数据速率和非常小的占地面积。拟议的编码器的响应时间和总芯片面积分别为369.3 fs和13.2μm×13.2μm。因此，这个简单的纳米逻辑平台非常适合光子逻辑处理器。