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ABSTRACT: Tunable all-in-fiber waveplates based on negative dielectric liquid crystal photonic bandgap fibers are presented. The birefringence can be tuned electrically and thermally to work as a quarter-wave or a half-wave plate in the range 1520 nm-1580 nm.
IEEE Lasers and Electro-Optics Society, 2008. LEOS 2008. 21st Annual Meeting of the; 12/2008
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ABSTRACT: A dual-function all-in-fiber device based on negative dielectric liquid crystal photonic bandgap fibers is presented. This device can work both as an electrically tunable waveplate in the range 1520 nm-1580 nm, and as a polarimeter at 1310 nm.
Optical Fiber Communication & Optoelectronic Exposition & Conference, 2008. AOE 2008. Asia; 12/2008
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ABSTRACT: A tunable and polarisation-maintaining all-in-fibre filter based on a liquid crystal photonic bandgap fibre is demonstrated. Its polarisation extinction ratio reaches 14 dB at 1550 nm wavelength. Its spectral tunability range spans over 250 nm in the temperature range 30 70 C. The measured transmission spectrum is compared with that obtained through finite element simulations.
Electronics Letters 10/2008; · 0.96 Impact Factor
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ABSTRACT: A tunable Gaussian filter based on a tapered oil‐filled photonic crystal fiber is demonstrated. The filter is centered at λ = 1364 nm with a bandwidth (FWHM) of 237nm. Tunability is achieved by changing the temperature of the filter. A shift of 210nm of the central wavelength has been observed by increasing the temperature from 25 °C to 100 °C. The measurements are compared to a simulated spectrum obtained by means of a vectorial Beam Propagation Method model.
AIP Conference Proceedings. 09/2008; 1055(1):113-116.
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ABSTRACT: We infiltrate photonic crystal fibers with negative dielectric liquid crystals. 400 nm bandgap shift is obtained in the range 22degC-80degC and 119 nm shift of the long-wavelength bandgap edge is achieved by applying a voltage of 200V<sub>rms</sub>.
Lasers and Electro-Optics, 2008 and 2008 Conference on Quantum Electronics and Laser Science. CLEO/QELS 2008. Conference on; 06/2008