Transmittance of a tunable filter at terahertz frequencies

被引：64

作者：

Drysdale, TD

Gregory, IS

Baker, C

Linfield, EH

Tribe, WR

Cumming, DRS ^{[1
]}

机构：

[1] Univ Glasgow, Dept Elect & Elect Engn, Glasgow G12 8LT, Lanark, Scotland

[2] Teraview Ltd, Cambridge CB4 0WG, England

[3] Univ Cambridge, Cavendish Lab, Semicond Phys Grp, Cambridge CB3 0HE, England

来源：

APPLIED PHYSICS LETTERS | 2004年 / 85卷 / 22期

关键词：

D O I：

10.1063/1.1829798

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A metallic photonic crystal filter has been demonstrated at terahertz frequencies, with the passband tunable over the range of 365-386 GHz. Tuning is achieved by a relative lateral shift of two metallic photonic crystal plates. Each plate is comprised of two orthogonal layers of gratings and integral mounting lugs. The plates are micromachined from silicon wafers then coated in gold to provide metallic electromagnetic behavior. An insertion loss of 3-7 dB and Q in the range of 20-30 was achieved. A shift of 140 mum gave a tuning range of 21 GHz, tuning sensitivity of 150 GHz/mm, and a fractional tuning range of 6%. (C) 2004 American Institute of Physics.

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页码：5173 / 5175

页数：3

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