Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: tilted bragg grating

Sortuj według:

Ogranicz wyniki do:

Spectral properties of Tilted Bragg Gratings with different tilt angles and variable surrounding conditions

Kisała Piotr, Wójcik Waldemar, Kalizhanova Aliya U., Kozbakova Ainur K, Amirgaliyeva Zhazira Y., Kashaganova Gulzhan, Amirgaliyeva Saltanat N.

Przegląd Elektrotechniczny

2019

R. 95, nr 4

185--188

This paper presents a differences in spectral characteristics of Tilted Fiber Bragg Gratings (TFBG) with variable angle of refractive index fringes and spectral response of this structures influenced by different surroundings. The light-guiding mechanism of fiber periodic structures with angled fluctuations of refractive index allow to modulate their spectral characteristics in wide range. It also makes them sensitive to refractive index of medium surrounding the fiber where this structure is inscribed.

W tej publikacji autorzy pokazują zależności parametrów widmowych struktur zwanych Skośnymi Światłowodowymi Siatkami Bragga dla różnych wartości kąta nachylenia zmian współczynnika załamania w rdzeniu światłowodu oraz ich odpowiedź spektralną dla różnych mediów otaczających. Mechanizm prowadzenia światła w strukturach z nachyloną p łaszczyzną zmian w rdzeniu pozwala na zmiany ich parametrów widmowych w szerokim zakresie jednocześnie sprawia, że są one wrażliwe na określone zmiany w otoczeniu światłowodu.

The Influence of Fibre Bending on Polarization-Dependent Twist Sensor Based on Tilted Bragg Grating

Harasim D.

Metrology and Measurement Systems

2017

Vol. 24, nr 3

577--584

This paper presents an experimental study on influence of input light polarization on the spectral characteristics of a fibre twist sensor based on Tilted Fiber Bragg Grating (TFBG) with simultaneous application of bending to an optical fibre. The application of proposed measurement stand could provide the ability of transforming the bending to a displacement. The twist measurement was performed by tuning of the sensor illuminating light polarization angle. The spectral parameters of selected cladding mode which are sensitive to the rotation of input light polarization angle have been shown. This paper shows the characteristics of transmittivity and wavelength shift for an incident high-order cladding mode measured with different curvatures of fibre. The dependency of selected cladding mode spectral parameters related with the twist measurement on the influence of temporary bending has been shown. The measurements were performed for two positions of sensing structure refractive index perturbations in relation to the bending direction plane. The experimental results show that the direction of TFBG structure bending has a small influence on the stability of spectral parameters characteristic for twist measurement, assuming that the bending direction is fixed while measurement.