Belotti Michele, Galisteo Lòpez Juan F, De Angelis Sara, Galli Matteo, Maksymov Ivan, Andreani Lucio C, Peyrade David, Chen Yong
Dipartimento di Fisica A Volta, UdR CNISMUniversità degli Studi di Pavia, Pavia, Italy.
Opt Express. 2008 Jul 21;16(15):11624-36.
A study of the optical transmission of low-loss W1.5 photonic crystal waveguides built on silicon membranes and operating at telecom wavelengths is presented. The feasibility of performing all-optical switching is demonstrated for W1.5 waveguides coupled with L3 cavities, systems amenable for incorporation in on-chip devices. Switching of waveguide transmission is achieved by means of optical excitation of free carriers using a 2.5 ns pump laser. Experimental results are reproduced by finite-difference time-domain simulations which model the response of the finite system and band structure calculations describing the infinite, ideal one.
本文介绍了一种基于硅膜构建并在电信波长下运行的低损耗W1.5光子晶体波导的光传输研究。对于与L3腔耦合的W1.5波导（适用于集成到片上器件中的系统），展示了实现全光开关的可行性。通过使用2.5 ns泵浦激光对自由载流子进行光激发来实现波导传输的切换。通过有限差分时域模拟（对有限系统的响应进行建模）和能带结构计算（描述无限理想系统）再现了实验结果。
