Thermal tunability of photonic bandgaps in photonic crystal fibers selectively filled with nematic liquid crystal

Franco, Marcos A. R.; Patrício, Paulo S.; Pitarello, Tânia R.

doi:10.1117/12.868246

Cited by 2 publications

(2 citation statements)

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“…Without applied pressure the HPCF has a polarimetric extinction ratio (PER) of about 50 dB at λ = 1160 nm, useful for single mode single polarization applications. The bandgap position can be shifted adjusting the Ge-doped rods diameters [4]. Appling hydrostatic pressure (500 bar) leads to drastically decrease the polarimetric extinction ratio from 50 dB to about 15 dB at 1160 nm.…”

Section: Resultsmentioning

confidence: 99%

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Hybrid photonic crystal fiber sensing of high hydrostatic pressure

Franco

Serrão²,

Pitarello

et al. 2011

SPIE Proceedings

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The opto-mechanical response of Hybrid Photonic Crystal Fiber (HPCF) with Ge-doped inclusions is numerically modeled for high hydrostatic pressure sensing purpose. A typical photonic crystal fiber (PCF) consists of a silica solidcore and a cladding with a hexagonal lattice of air-holes. The HPCF is similar to the regular PCF, but a horizontal line of air-holes is substituted by solid high index rods of Ge-doped silica. The optical guidance in HPCFs is supported combining two physical effects: the modified total internal reflection and the photonic bandgap. In such fibers, the Gedoped inclusions induce residual birefringence. In our analysis, we evaluate the susceptibility of the phase modal birefringence and group birefringence to hydrostatic pressure. The analyses were performed at a photonic bandgap with central wavelength near to 1350 nm. The polarimetric pressure sensitivity is about 10 rad/MPa x m at λ = 1175 nm.

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Section: Resultsmentioning

confidence: 99%

“…Hybrid Photonic Crystal Fiber (HPCF) is a novel type of photonic crystal fiber (PCF) that supports optical guidance by two physical effects: the modified total internal reflection (mTIR) and photonic bandgap (PBG) [1][2][3][4]. The HPCF is composed of air-holes and Germanium-doped silica rods disposed around an undoped silica core.…”

Section: Introductionmentioning

confidence: 99%