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Methodology of splicing large air filling factor suspended core photonic crystal fibres

Jaroszewicz L. R., Murawski M., Nasilowski T., Stasiewicz K., Marć P., Szymański M., Mergo P.

Opto-Electronics Review

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2011

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Vol. 19, No. 2

256-259

EN

We report the methodology of effective low-loss fusion splicing a photonic crystal fibre (PCF) to itself as well as to a standard single mode fibre (SMF). Distinctly from other papers in this area, we report on the results for splicing suspended core (SC) PCF having tiny core and non-Gaussian shape of guided beam. We show that studied splices exhibit transmission losses strongly dispersive and non-reciprocal in view of light propagation direction. Achieved splicing losses, defined as larger decrease in transmitted optical power comparing both propagation directions, are equal to 2.71 ±0.25 dB, 1.55 ±0.25 dB at 1550 nm for fibre SC PCF spliced to itself and to SMF, respectively.

2

Depolarization of light in microstructured fibers filled with liquid crystals

Budaszewski D., Domański A. W., Czapla A., Ertman S., Woliński T. R., Nasilowski T., Thienpont H.

Opto-Electronics Review

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2009

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Vol. 17, No. 2

156-160

EN

In the paper we analyze microstructured optical fibers filled with typical nematic liquid crystals, i.e., 5CB and 6CHBT under influence of external electric field or temperature. We use the modified Mueller matrix method with an additional depolarization matrix to calculate degree of polarization changes of the light propagating in the liquid-crystal infiltrated microstructured optical fibers. Preliminary experimental results of light depolarization measurements during propagation in these microstructured fibers are also presented.

3

Tunable properties of light propagation in photonic liquid crystal fibers

Szaniawska K., Nasilowski T., Woliński T. R., Thienpont H.

Opto-Electronics Review

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2006

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Vol. 14, No. 4

339-343

EN

Tunable properties of light propagation in photonic crystal fibers filled with liquid crystals, called photonic liquid crystal fibers (PLCFs) are presented. The propagation properties of PLCFs strongly depend on contrast between refractive indices of the solid core (pure silica glass) and liquid crystals (LCs) filing the holes of the fiber. Due to relatively strong thermo-optical effect, we can change the refractive index of the LC by changing its temperature. Numerical analysis of light propagation in PLCF, based on two simulation methods, such as finite difference (FD) and multipole method (MM) is presented. The numerical results obtained are in good agreement with our earlier experimental results presented elsewhere [1].