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Conversion between the index guiding fiber and photonic bandgap fiber by filling liquid of high refractive index into the air-holes of the PCF.
Experimental setup and the cross section of PCF.
(a) Simulated effective refractive-index maps and computed transverse mode profile at (b) 900 nm and (c) 1700 nm.
Transmission spectra of the magnetic field sensor under different magnetic field strengths.
Variation trend of the edge wavelength vs the magnetic field strength.
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