13 March 2012 Terahertz tunable narrow bandpass filter based on photonic crystal cavity
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Abstract
We have fabricated high quality THz tunable bandpass filters based on one dimensional photonic crystal cavity. The filter have a high quality about 1500 and can have a very narrow passband and the full width at half maximum (FWHM) can be about 200MHz and the peak transmission is higher than -4dB. With the length of cavity adjusted by a motorized linear stage, the central frequency of the filter can be tuned continuously. The bandwidth and insertion loss is also analyzed theoretically.
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Jinlong He, Jinlong He, Pingan Liu, Pingan Liu, Yalan He, Yalan He, Zhi Hong, Zhi Hong, } "Terahertz tunable narrow bandpass filter based on photonic crystal cavity", Proc. SPIE 8330, Photonics and Optoelectronics Meetings (POEM) 2011: Laser and Terahertz Science and Technology, 83300T (13 March 2012); doi: 10.1117/12.918785; https://doi.org/10.1117/12.918785
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