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This paper presents the preparation and characteristics of an intensity-based tapered plastic optical fiber (POF) coated with a mixture of poly-vinyl alcohol (PVA) and SiO2 for sensing ethanol concentration in H2O. The 1.0 mm-diameter POF was tapered to a diameter of about 730 μm using tensile tester with thermostatic chamber and the total tapered length was 5.0 cm. The tapered section was coated...
SiO2-ZrO2 doped Er3+ glass ceramic waveguides are promising materials for photonic applications. However, higher doping of Er3+ ions would cause erbium ion clustering due to network structure of silica which has strong Si-O-Si covalent bonds thus reduced the luminescence emission intensity. Network structure of silica can be overcome by introducing ZrO2 as co-host material in silica glass matrix which...
A multi-wavelength Brillouin fiber laser (BFL) with 200nm (1430 nm to 1630 nm) wavelength tuning is presented. The BFL configuration comprises of a long 25-km SMF-28 to provide non-linear gain and optical circulator to re-inject higher order Stokes signal into cavity to seed a cascaded BFL lines. The proposed configuration produced up to 17 Brillouin Stoke lines with channel spacing of 11GHz in 1510...
An acrylic-based 1×2 Y-Branch POF coupler consist of input POF waveguide, a middle high index contrast waveguide taper and output POF waveguides has been developed and modeled using non-sequential ray tracing. The waveguide taper provide an all passive alignment with insertion loss of 4.68 dB and coupling ratio of 50:50.
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