Recording Policryps structures in photonic crystal fibers

Poudereux, David; Caño‐García, Manuel; Alj, Domenico; Caputo, Roberto; Umeton, Cesare; Geday, Morten Andreas; Otón, J. M.; Quintana, Xabier

doi:10.4302/plp.v9i1.700

Photon.Lett.PL

2017

DOI: 10.4302/plp.v9i1.700

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Recording Policryps structures in photonic crystal fibers

David Poudereux

Manuel Caño‐García

Domenico Alj

et al.

Abstract: Abstract-Policryps structures of photo-curable adhesive NOA61

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“…Another worth noting type of photo-induced fiber grating is reported in Ref. 24 , where so-called polymer–liquid crystal polymer slices (POLICRYPS) were holographically recorded in selectively filled HB-PCF with a period as low as 2 µm. Even if authors did not manage to record the spectra typical for Bragg grating, it was the very first demonstration of such a small periodicity inside PCFs.…”

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Periodic liquid crystalline waveguiding microstructures

Ertman,

Orzechowski,

Rutkowska

et al. 2023

Sci Rep

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Different methods allowing for creating optical waveguides with liquid–crystal (LC) cores, in which molecules form periodic patterns with precisely controlled periods, are reported. The first one is based on reversible photoalignment with high-resolution selective illumination and allows to control the period of LC molecules inside silica microcapillaries. The second method employs microstructures formed in PDMS, allowing to obtain both: LC-core waveguides and a set of specially designed periodic microelectrodes used for the periodic reorientation of molecules. Using both methods, we successfully controlled the period of the patterned alignment in the range from about 500 µm and scaled it down to as small as 20 µm. We performed experimental studies on waveguiding phenomenon in such structures, in view to obtain transmission spectra typical to optical fiber gratings. Since the results achieved in experimental conditions differed from those expected, the additional numerical simulations were performed to explain the observed effects. Finally, we obtained the waveguiding in a blue phase LC, characterized by naturally created three-dimensional periodicity with periods smaller than one micrometer. In such a structure, we were able to observe first-order bandgap, and moreover, we were able to tune it thermally in nearly the whole visible spectral range.

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confidence: 99%

Periodic liquid crystalline waveguiding microstructures

Ertman,

Orzechowski,

Rutkowska

et al. 2023

Sci Rep

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Low-birefringence liquid crystal mixtures for photonic liquid crystal fibres application

et al. 2017

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Recording Policryps structures in photonic crystal fibers

Abstract: Abstract-Policryps structures of photo-curable adhesive NOA61

Cited by 2 publications

References 16 publications

Periodic liquid crystalline waveguiding microstructures

Periodic liquid crystalline waveguiding microstructures

Low-birefringence liquid crystal mixtures for photonic liquid crystal fibres application

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