Chen Yishu, Feng Jijun, Chen Jian, Liu Haipeng, Yuan Shuo, Guo Song, Yu Qinghua, Zeng Heping
Engineering Research Center of Optical Instrument and System, Ministry of Education and Shanghai Key Laboratory of Modern Optical System, School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, 516 Jungong Rd, Shanghai 200093, China.
Key Laboratory of Intelligent Infrared Perception, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China.
Nanomaterials (Basel). 2022 Jul 17;12(14):2447. doi: 10.3390/nano12142447.
In this study, a tunable gourd-shaped ring resonator is demonstrated to generate optical bistability. The system consists of two sub-rings for a gourd shape configuration with a U-shaped wave guiding pathway. The transfer matrix method and FDTD simulation are used to acquire the spectral characteristics of the system. For the fabricated device, the spectra profile and extinction ratio can be effectively tuned by the microheater above the U-shaped waveguide, which matches with the theoretical results. Due to the gourd structure of the resonator, the light waves in two rings can be cross-coupled with each other, and the optical bistability could come out effectively with the change in the input optical power around 6 mW. The presented optical bistability devices have great application potential in optical information processing such as optical storage, switch and logic operation.
在本研究中，展示了一种可调谐葫芦形环形谐振器以产生光学双稳性。该系统由两个用于葫芦形配置的子环组成，具有U形波导路径。采用传输矩阵法和时域有限差分（FDTD）模拟来获取系统的光谱特性。对于所制备的器件，U形波导上方的微加热器可有效调节光谱轮廓和消光比，这与理论结果相符。由于谐振器的葫芦结构，两个环中的光波可以相互交叉耦合，并且在输入光功率约为6 mW时，随着输入光功率的变化可有效产生光学双稳性。所提出的光学双稳性器件在诸如光存储、开关和逻辑运算等光信息处理方面具有巨大的应用潜力。
