Modelling of infrared bandpass filters using three-dimensional FDTD method

R. Qiang, J. Chen, T. Zhao, S. Wang, P. Ruchhoeft, M. Morgan

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

A three-dimensional finite-difference time-domain algorithm was developed to model the spectral behaviour of infrared bandpass filters consisting of plus-shaped openings in a thin gold film. This algorithm incorporates the Lorentz-Drude model to accurately describe the frequency-dependent permittivity of the gold at IR frequencies. The computed transmission spectrum is compared with measured data and excellent agreement between the two results is observed.

Original languageEnglish
Pages (from-to)914-915
Number of pages2
JournalElectronics Letters
Volume41
Issue number16
DOIs
StatePublished - 4 Aug 2005

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