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A THz wire grid polarizer on cyclo-olefin Zeonor polymer film that exhibits high extinction ratio and low losses is theoretically and experimentally investigated. The polarizer has an extinction ratio between 30 and 45 dB and insertion losses below 1 dB in the 0.3–2.5 THz range. The high-performance characteristics of the polarizer are preserved even when it is bent at a radius of 12.5 mm. Although...
Experimental findings on a novel, compact, low cost tuneable and switchable guided wave optical filter using a composite holographic Bragg grating as the perturbation element of the guided optical field is summarized. The optical transmittance of the filter is measured by an optical spectrum analyzer. The tuning of the filter reflection response is also obtained.
We present the experimental findings of a novel, switchable guided wave optical filter using a holographic Bragg grating as the optic field perturbation element using an inexpensive fabrication technology. The grating consists of a novel structure, known as POLICRYPS (polymer liquid crystal polymer slices), made of polymer slices alternated with films of aligned nematic liquid crystals (NLC). Such...
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