采用Ge2Sb2Te5与多模硅波导的超小型、自保持光学栅极开关。

Ultra-small, self-holding, optical gate switch using Ge2Sb2Te5 with a multi-mode Si waveguide.

作者信息

Tanaka Daiki, Shoji Yuya, Kuwahara Masashi, Wang Xiaomin, Kintaka Kenji, Kawashima Hitoshi, Toyosaki Tatsuya, Ikuma Yuichiro, Tsuda Hiroyuki

机构信息

Graduate School of Science and Technology, Keio University, 3-14-1 Hiyoshi, Yokohama-shi, Kanagawa-ken 223-8522, Japan.

出版信息

Opt Express. 2012 Apr 23;20(9):10283-94. doi: 10.1364/OE.20.010283.

DOI:10.1364/OE.20.010283

PMID:22535118

Abstract

We report a multi-mode interference-based optical gate switch using a Ge(2)Sb(2)Te(5) thin film with a diameter of only 1 µm. The switching operation was demonstrated by laser pulse irradiation. This switch had a very wide operating wavelength range of 100 nm at around 1575 nm, with an average extinction ratio of 12.6 dB. Repetitive switching over 2,000 irradiation cycles was also successfully demonstrated. In addition, self-holding characteristics were confirmed by observing the dynamic responses, and the rise and fall times were 130 ns and 400 ns, respectively.

摘要

我们报道了一种基于多模干涉的光闸开关，其使用直径仅为1 µm的Ge(2)Sb(2)Te(5)薄膜。通过激光脉冲照射演示了开关操作。该开关在1575 nm左右具有100 nm的非常宽的工作波长范围，平均消光比为12.6 dB。还成功演示了超过2000次照射循环的重复开关操作。此外，通过观察动态响应确认了自保持特性，上升时间和下降时间分别为130 ns和400 ns。