异质微环谐振腔双稳态及全光存储器应用  

Bistability in hybrid micro-ring resonator for all-optical memory

作　　者：王婷[1,2] 沈微宏[1] SCHOENHARDT Steffen 张启明 WANG Ting;SHEN Weihong;SCHOENHARDT Steffen;ZHANG Qiming(Institute of Photonic Chips,University of Shanghai for Science and Technology,Shanghai 200093,China;School of Optical-Electrical and Computer Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学光子芯片研究院,上海200093 [2]上海理工大学光电信息与计算机工程学院,上海200093

出　　处：《光学仪器》2024年第2期7-13,共7页Optical Instruments

基　　金：上海张江国家自主创新示范区专项发展资金重大项目(ZJ2019-ZD-005)。

摘　　要：提出了一种基于异质集成波导的微环谐振腔,对其双稳态现象进行了研究分析,并将其应用于全光存储功能的实现。异质集成波导具有超高的克尔非线性效应,不受热光效应和载流子响应的限制,在超快克尔非线性效应的支持下,该结构具有快速全光切换的能力。设计了一个高品质因子Q=77565的微环谐振腔,用耦合模式理论模拟了其双稳态现象。在峰值功率为474 fJ,宽度为20 ps的脉冲激励下,该微环谐振腔很好地实现了全光存储功能,并通过波分复用的串联微环结构展示了波长可寻址的四位光存储器。研究了基于超高克尔非线性效应的双稳态现象,为实现超快切换速度提供了可能性,在光存储、光开关、人工智能研究等方面具有一定的参考价值。In this paper,we propose a heterogeneous integrated waveguide platform.The bistable behavior of a micro-ring resonator is observed and analyzed,and the implementation of all-optical memory is shown.The proposed heterogeneous integrated waveguide has strong Kerr nonlinear effect,without the restrictions on thermo-optical effect and free-carrier lifetime.Pure Kerr nonlinear effect enables the ultra-fast all-optical switching.We designed a micro-ring resonator with high quality factor Q=77565.The bistable behavior was simulated based on coupled mode theory(CMT),and an all-optical memory was realized under the pulse excitation with peak power of 474 fJ and pulse width of 20 ps.Besides,we demonstrated the wavelength addressable four-bit optical memory using four micro-ring resonators cascaded by wavelength division multiplexing.This paper investigates the bistability based on high Kerr nonlinear effect,which provides the possibility of achieving ultra-fast all-optical switching,and shows certain research significance on optical storage,optical switching,and artificial intelligence.

关 键 词：微环谐振腔 双稳态 克尔非线性效应 光存储 

分 类 号：O436.4[机械工程—光学工程]