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Fig. 3 | PhotoniX

Fig. 3

From: Frequency selective fingerprint sensor: the Terahertz unity platform for broadband chiral enantiomers multiplexed signals and narrowband molecular AIT enhancement

Fig. 3

a Optical images of the fabricated FSFS. b 36-pixel location (P1-P36 corresponds to L from 104 μm to 47 μm. c Microscope images of cross slot pixels for L = 104 μm (P1, red), 68 μm (P15, green) and 47 μm (P36, blue). d Normalized experimental transmission spectra of FSFS. e Experimental resonance frequencies vs L, inset: The interval L between 47 μm to 68 μm is denser in order to guarantee the interval of resonance frequency in each pixel less than 0.05 THz. f Operation principle of FSFS. g Trace detection scenario of FSFS

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