First experimental demonstration of a photonic band gap channel-drop filter at 240 GHz

Simakov, Evgenya I.; Earley, Lawrence M.; Heath, Cynthia E.; Shchegolkov, Dmitry Yu.; Schultz, Brian D.
October 2010
Review of Scientific Instruments;Oct2010, Vol. 81 Issue 10, p104701
Academic Journal
We have designed, fabricated, and tested a novel photonic band gap (PBG) channel-drop filter (CDF) operating at around 240 GHz. A PBG CDF is a device that allows the channeling of selected frequencies from continuous spectra into separate waveguides through select defects in a PBG structure. It is compact and configurable, and thus, it can be employed for millimeter-wave spectrometry with applications in communications, radio astronomy, and radar receivers for remote sensing and nonproliferation. In this paper we present the design, modeling, and fabrication methods used to produce a silicon-based PBG CDF, and demonstrate its ability to filter the frequency of 240 GHz with a linewidth of approximately 1 GHz and transmission of 25 dB above background.


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