Results 211 to 220 of about 3,472,033 (243)
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Design of photosensitive microstructured polymer optical fibers
Frontiers of Optoelectronics in China, 2009We propose a new hole-assisted polymer optical fiber design to eliminate the influence of dopant diffusion and to increase the ultra violet (UV) writing efficiency in fiber Bragg grating inscription. The optical waveguide is formed inside a solid core polymethyl methacrylate (PMMA) doped with photosensitive trans-4-stilbenemethanol, surrounded by a ...
Hwa-Yaw Tam +3 more
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Fabrication of microstructured polymer optical fiber preform
SPIE Proceedings, 2006We report a new technology to fabricate microstructured polymer optical fiber (MPOF, also named polymer photonic crystal fiber, pPCF) preform rods by in-situ polymerization of monomer in a mould. Series of pPCF preform rods including elliptic core fiber preform rod, single-mode fiber preform rod and ring-type holes structured preform rods have been ...
Yani Zhang +6 more
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Laser based microstructuring of polymer optical fibers for sensors optimization
SPIE Proceedings, 2015Microstructuring of Polymer Optical Fibers-POF through surface modification with UV excimer laser radiation has been performed and studied. The laser modified surface cavities on fibers act as material receptors of exact volume allowing highly controllable and repeatable structures.
Athanasekos L. +5 more
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Sensitivity of Birefringent Microstructured Polymer Optical Fiber to Hydrostatic Pressure
IEEE Photonics Technology Letters, 2013We present a PMMA birefringent fiber with enhanced polarimetric sensitivity to hydrostatic pressure, obtained by enlarging selected holes in the microstructured cladding. The fiber shows a linear response to pressure with small hysteresis in the pressure range up to 8.5 MPa and the sensitivity of 48 rad/MPa·m at 600 nm.
Martynkien, T. +2 more
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Applications of microstructured polymer optical fibers
2010 Photonics Global Conference, 2010This paper considers several applications of microstructured polymer optical fibres (mPOF) which rely on the properties of the polymer. These include strain sensing using single-mode mPOF inscribed with long period gratings, the use chiral materials to make circularly birefringent fibres, combinations of polymers to study novel fibre designs and the ...
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Transmission of terahertz radiation using a microstructured polymer optical fiber
Optics Letters, 2008A hollow-core microstructured polymer optical fiber was analyzed in the terahertz (THz) region. Spectral analysis of time domain data shows propagation of THz waves in both the hollow-core and the microstructured cladding with a time delay of approximately 20 ps. The frequency range and shift of the transmission bands between different sized waveguides
Carlito S, Ponseca +6 more
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Disordered microstructure polymer optical fiber for stabilized coherent random fiber laser
Optics Letters, 2013We have demonstrated the realization of a random polymer fiber laser (RPFL) based on laser dye Pyrromethene 597-doped one-dimensional disordered polymer optical fiber (POF). The stabilized coherent laser action for the disordered POF has been obtained by the weak optical multiple scattering of the polyhedral oligomeric silsesquioxanes nanoparticles in ...
Zhijia, Hu +6 more
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Microstructured polymer optical fiber sensors for optoacoustic endoscopy
SPIE Proceedings, 2017Intravascular photoacoustics (IVPA) can complement intravascular ultrasound (IVUS) morphological information adding specificity. A practical IVUS/IVPA catheter is mandatory to have a wideband ultrasonic detector with enough sensitivity despite the necessary miniaturization to be fitted in less than 1 mm to pass through thin vasculature.
D. Gallego, H. Lamela
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Fabrication Conditions for Randomly Microstructured Polymer Optical Fibers
Integrated Photonics Research and Applications/Nanophotonics, 2006Microstructured polymer optical fiber was fabricated in which bubbles were randomly distributed in the cladding to both guide and scatter light. The effect of fabrication conditions on the fiber structure and properties is discussed.
R. M. Chaplin +3 more
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Coupling in a twin-core microstructured polymer optical fiber
Applied Physics Letters, 2004Theoretical calculations and experimental results are reported for a microstructured polymer optical fiber twin-core coupler. Beat lengths are calculated using a fully vectorial, Fourier decomposition method, which show that the beat length is extremely sensitive to any core asymmetry. Reasonably good agreement between theory and experiment is obtained.
W. E. P. Padden +3 more
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