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A novel design of polarization filter based on photonic crystal fiber (PCF) is proposed in this paper. With the introduce of a gold-coated air hole, the loss of y polarized mode is 2138.34 dB/cm while the loss is very low in x polarization at the wavelength of 1.31 μm. The significant loss in y polarization makes this PCF a good candidate for developing a polarization filter with high performance...
We propose a dual-core photonic crystal fiber (PCF) for a broad bandwidth polarization-insensitive coupler. To achieve ultrabroadband and polarization-insensitive characteristics, two elliptical fluorine-doped cores are introduced. By optimizing structure parameters and fiber length, a polarization-insensitive 50:50 coupler is achieved. Its coupling ratio stabilizes at 50 ± 1% the in whole optical...
This paper presents some key issues in fiber-optic interferometric magnetic field sensors. Practically applicable methods to design and implement fiber-optic Michelson interferometer and transducers are described with experimental verifications. Detection scheme of traditional hardware demodulation is improved, and a new software demodulation method is addressed. Transducers were implemented by using...
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