Transmittance of a tuneable filter at terahertz frequencies
نویسندگان
چکیده
A metallic photonic crystal filter has been demonstrated at terahertz frequencies, with the passband tuneable over the range 365 386 GHz. Tuning is achieved by a relative lateral shift of two metallic photonic crystal plates. Each plate comprises two orthogonal layers of gratings and integral mounting lugs. The plates are micromachined from silicon wafers then coated in gold to provide metallic electromagnetic behaviour. An insertion loss of 3 – 7 dB and Q in the range 20 – 30 was achieved. A shift of 140μm gave a tuning range of 21GHz, tuning sensitivity of 150GHz/mm and a fractional tuning range of 6%.
منابع مشابه
Calculated and measured transmittance of a tunable metallic photonic crystal filter for terahertz frequencies
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