Calculated and measured transmittance of a tunable metallic photonic crystal filter for terahertz frequencies

Drysdale, T.D., Blaikie, R.J. and Cumming, D.R.S. (2003) Calculated and measured transmittance of a tunable metallic photonic crystal filter for terahertz frequencies. Applied Physics Letters, 83, p. 5362. (doi: 10.1063/1.1636822)

Abstract

A tunable metallic photonic crystal filter with a mechanical tuning mechanism is demonstrated. The performance is predicted with rigorous full-vector electromagnetic simulations (finite-difference time domain). A prototype has been built and characterized in the W band (70–110 GHz) using a vector network analyzer configured for free-space measurement of S parameters. The measured filter's passband has a quality factor of 11, a tuning range of 3.5 GHz, and insertion loss of only 1.1–1.7 dB. Device fabrication is straightforward, yielding an inexpensive, robust and compact tunable filter.

• Item Type: Articles
• Keywords: Submillimetre wave filters, electromagnetic wave transmission, photonic crystals, microwave photonics, crystal filters, finite difference time-domain analysis, band-pass filters, Q-factor, losses.
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Cumming, Professor David and Drysdale, Dr Timothy
• Authors: Drysdale, T.D., Blaikie, R.J., and Cumming, D.R.S.
• Subjects: Q Science > QC Physics
• College/School: College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
• Journal Name: Applied Physics Letters
• Publisher: American Institute of Physics
• ISSN: 0003-6951
• Copyright Holders: Copyright © 2003 American Institute of Physics
• First Published: First published in Applied Physics Letters 83:5362
• Publisher Policy: Reproduced in accordance with the copyright policy of the publisher