中国物理B ›› 2015, Vol. 24 ›› Issue (10): 107801-107801.doi: 10.1088/1674-1056/24/10/107801

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Multifunctional disk device for optical switch and temperature sensor

卞振宇, 梁瑞生, 张郁靖, 易丽璇, 赖根, 赵瑞通   

  1. Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, School for Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, China
  • 收稿日期:2015-01-19 修回日期:2015-05-18 出版日期:2015-10-05 发布日期:2015-10-05
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61275059 and 61307062).

Multifunctional disk device for optical switch and temperature sensor

Bian Zhen-Yu (卞振宇), Liang Rui-Sheng (梁瑞生), Zhang Yu-Jing (张郁靖), Yi Li-Xuan (易丽璇), Lai Gen (赖根), Zhao Rui-Tong (赵瑞通)   

  1. Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, School for Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, China
  • Received:2015-01-19 Revised:2015-05-18 Online:2015-10-05 Published:2015-10-05
  • Contact: Liang Rui-Sheng E-mail:liangrs@scnu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 61275059 and 61307062).

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摘要： A multifunctional surface plasmon polariton disk device coupled by two metal-insulator-metal (MIM) waveguides is proposed and investigated numerically with finite-difference time-domain simulation. It can be used as optical switch and temperature sensor by filling disk with liquid crystal and ethanol, respectively. The simulation results demonstrate that the transmission characteristics of an optical switch can be manipulated by adjusting the radius of disk and the slit width between disk and MIM waveguides. The transmittance and modulation depth of optical switch at 1550 nm are up to 64.82% and 17.70 dB, respectively. As a temperature sensor, its figure of merit can reach 30.46. In this paper, an optical switch with better efficiency and a temperature sensor with better sensitivity can be achieved.

关键词: surface plasmon polaritons, optical switch, modulation depth, temperature sensor, figure of merit

Abstract: A multifunctional surface plasmon polariton disk device coupled by two metal-insulator-metal (MIM) waveguides is proposed and investigated numerically with finite-difference time-domain simulation. It can be used as optical switch and temperature sensor by filling disk with liquid crystal and ethanol, respectively. The simulation results demonstrate that the transmission characteristics of an optical switch can be manipulated by adjusting the radius of disk and the slit width between disk and MIM waveguides. The transmittance and modulation depth of optical switch at 1550 nm are up to 64.82% and 17.70 dB, respectively. As a temperature sensor, its figure of merit can reach 30.46. In this paper, an optical switch with better efficiency and a temperature sensor with better sensitivity can be achieved.

Key words: surface plasmon polaritons, optical switch, modulation depth, temperature sensor, figure of merit

中图分类号:  (Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures)

  • 78.67.-n
78.20.Bh (Theory, models, and numerical simulation) 78.15.+e (Optical properties of fluid materials, supercritical fluids and liquid crystals) 78.30.cb (Organic liquids)