Micro-electro-mechanically tunable metamaterial with enhanced electro-optic performance

Journal Article · Mon Apr 14 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4871517· OSTI ID:22262628

Pitchappa, Prakash; Pei Ho, Chong ^[1]; Lin, Yu-Sheng; Lee, Chengkuo ^[1]; Kropelnicki, Piotr; Singh, Navab ^[2]; Huang, Chia-Yi ^[3]

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1. Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore 117576 (Singapore)
2. Institute of Microelectronics (IME), 11 Science Park Road, Singapore 117685 (Singapore)
3. Department of Applied Physics, Tunghai University, No. 1727, Sec. 4, Taiwan Boulevard, Taichung 40704, Taiwan (China)

We experimentally demonstrate a micro-electro-mechanically tunable metamaterial with enhanced electro-optical performance by increasing the number of movable cantilevers in the symmetrical split ring resonator metamaterial unit cell. Simulations were carried out to understand the interaction of the incident terahertz radiation with out-of-plane deforming metamaterial resonator. In order to improve the overall device performance, the number of released cantilever in a unit cell was increased from one to two, and it was seen that the tunable range was doubled and the switching contrast improved by a factor of around five at 0.7 THz. This simple design approach can be adopted for a wide range of high performance electro-optical devices such as continuously tunable filters, modulators, and electro-optic switches to enable future photonic circuit applications.

• OSTI ID: 22262628
• Journal Information: Applied Physics Letters, Vol. 104, Issue 15; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ELECTRICAL PROPERTIES
MECHANICAL PROPERTIES
OPTICAL PROPERTIES
RESONATORS
SWITCHES