Results 181 to 190 of about 1,059 (209)

Design of photosensitive microstructured polymer optical fibers

Frontiers of Optoelectronics in China, 2009
We 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, Kei-Chun Davis Cheng, Guiyao Zhou, Ming-Leung Vincent Tse   +3 more
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Fabrication of microstructured polymer optical fiber preform

SPIE Proceedings, 2006
We 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, Lili Wang, Liyong Ren, Tonghai Li, Xuezhong Wang, Wei Zhao, Runcai Miao   +6 more
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Laser based microstructuring of polymer optical fibers for sensors optimization

SPIE Proceedings, 2015
Microstructuring 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., Vasileiadis M., Sachat A.E., Βάϊνος, Νικόλαος  A., Vainos, Nikolaos A., Riziotis, Christos   +5 more
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Transmission of terahertz radiation using a microstructured polymer optical fiber

Optics Letters, 2008
A 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, Romeric, Pobre, Elmer, Estacio, Nobuhiko, Sarukura, Alexander, Argyros, Maryanne C, Large, Martin A, van Eijkelenborg   +6 more
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Applications of microstructured polymer optical fibers

2010 Photonics Global Conference, 2010
This 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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Disordered microstructure polymer optical fiber for stabilized coherent random fiber laser

Optics Letters, 2013
We 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, Bo, Miao, Tongxin, Wang, Qiang, Fu, Douguo, Zhang, Hai, Ming, Qijin, Zhang   +6 more
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Development of large core microstructured polymer optical fiber

SPIE Proceedings, 2012
In this paper we report the in-house synthesis of optical grade PMMA suitable for fiber development and fabrication of a large core micro-structured polymer optical fiber (mPOF). We have designed an mPOF with a core area of 580 μm2 and single mode performance at a wavelength of 650 nm. The photonic cladding is composed of 3 rings of air holes with a
Adam Filipkowski, Dariusz Pysz, Pawel Gdula, Katrin Welikow, Krzysztof Harasny, Andrew J. Waddie, Krzysztof Borzycki, Arno Kraft, Ryszard Piramidowicz, Ryszard Stepien, Mohammad R. Taghizadeh, Ryszard Buczynski   +11 more
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Microstructured polymer optical fiber sensors for optoacoustic endoscopy

SPIE Proceedings, 2017
Intravascular 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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Coupling in a twin-core microstructured polymer optical fiber

Applied Physics Letters, 2004
Theoretical 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, M. A. van Eijkelenborg, A. Argyros, N. A. Issa   +3 more
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Sensing characteristics of birefringent microstructured polymer optical fiber

SPIE Proceedings, 2011
We experimentally studied several sensing characteristics of a birefringent microstructured polymer optical fiber. The fiber exhibits a birefringence of the order 2×10 -5 at 1.3 μm because of two small holes adjacent to the core. In this fiber, we measured spectral dependence of phase and group modal birefringence, bending losses, polarimetric ...
Marcin K. Szczurowski, Orlando Frazão, J. M. Baptista, Kristian Nielsen, Ole Bang, Wacław Urbańczyk   +5 more
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