Journal ArticleDOI
Microstructure fibres for optical sensing in gases and liquids
TLDR
In this paper, a water-core microstructure fiber design allows nearly ideal guidance for aqueous sensing applications, where the total internal reflection by a microstructured silica-air cladding provides robust confinement of light in a fluid-filled core, if the average cladding index is sufficiently below the index of water.Abstract:
A novel water-core microstructure fibre design allows nearly ideal guidance for aqueous sensing applications. The total internal reflection by a microstructured silica–air cladding provides robust confinement of light in a fluid-filled core, if the average cladding index is sufficiently below the index of water. Numerical results show dramatically improved loss and overlap of light with the sample, compared to evanescent-field fibres, indicating a direct improvement of sensor performance. A strategy for the improvement of evanescent-wave gas sensors is also discussed.read more
Citations
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Journal ArticleDOI
Photonic crystal fiber long-period gratings for biochemical sensing.
Lars Henning Rindorf,Jesper Bevensee Jensen,Martin Dufva,Lars Hagsholm Pedersen,Poul E. Hoiby,Ole Bang +5 more
TL;DR: Experimental results showing that long-period gratings in photonic crystal fibers can be used as sensitive biochemical sensors and has a sensitivity of approximately 1.4nm/1nm in terms of the shift in resonance wavelength in nm per nm thickness of biomolecule layer.
Journal ArticleDOI
Microstructured-core optical fibre for evanescent sensing applications.
Cristiano M. B. Cordeiro,Marcos A. R. Franco,Giancarlo Chesini,Elaine C. S. Barretto,Richard Lwin,C. H. Brito Cruz,Maryanne C. J. Large +6 more
TL;DR: A new approach to evanescent field sensing is presented, in which both core and cladding are microstructured, in order to improve fibre sensing for low refractive index materials such as liquids and gases.
Journal ArticleDOI
Selective detection of antibodies in microstructured polymer optical fibers
Jesper Bevensee Jensen,Poul E. Hoiby,Grigoriy Emiliyanov,Ole Bang,Lars Pedersen,Anders Bjarklev +5 more
TL;DR: This work demonstrates selective detection of fluorophore labeled antibodies from minute samples probed by a sensor layer of complementary biomolecules immobilized inside the air holes of microstructured Polymer Optical Fiber (mPOF).
Journal ArticleDOI
Review of long period fiber gratings written by CO2 laser
TL;DR: In this paper, a systematic review of long period fiber gratings (LPFGs) written by the CO2 laser irradiation technique is presented, and several pretreament and post-treatment techniques are proposed to enhance the efficiency of grating fabrications.
Journal ArticleDOI
Fabrication of selective injection microstructured optical fibers with a conventional fusion splicer
TL;DR: With this method, the central hollow-core and the holes in the cladding region can be selectively infiltrated, which allows for the fabrication of novel hybrid polymer- silica and liquid-silica MOFs for various applications.
References
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Book
Electromagnetic wave theory
TL;DR: A first year graduate text on electromagnetic field theory emphasizing mathematical approaches, problem solving and physical interpretation is presented in this article, where guidance propagation, radiation, and scattering of electromagnetic waves are discussed.
Journal ArticleDOI
Direct link between microwave and optical frequencies with a 300 THz femtosecond laser comb
Scott A. Diddams,David J. Jones,Jun Ye,Steven T. Cundiff,John L. Hall,Jinendra Kumar Ranka,Robert S. Windeler,Ronald Holzwarth,Thomas Udem,Theodor W. Hänsch +9 more
TL;DR: A great simplification in the long-standing problem of measuring optical frequencies in terms of the cesium primary standard is demonstrated, enabling us to measure the 282 THz frequency of an iodine-stabilized Nd:YAG laser directly in Terms of the microwave frequency that controls the comb spacing.
Journal ArticleDOI
Antiresonant reflecting photonic crystal optical waveguides.
TL;DR: A new regime of guidance is identified in which the spectral properties of these structures are largely determined by the thickness of the high-index layers and the refractive-index contrast and are not particularly sensitive to the period of the cladding layers.
Journal ArticleDOI
Full 2-D photonic bandgaps in silica/air structures
TL;DR: In this paper, full 2D photonic bandgaps are demonstrated for all polarisations in structures with refractive index contrast as small as that of silica and air, and a new type of optical fiber based on these structures is proposed.
Journal ArticleDOI
Multipole method for microstructured optical fibers. I. Formulation
Thomas P. White,Boris T. Kuhlmey,Ross C. McPhedran,Daniel Maystre,Gilles Renversez,C. Martijn de Sterke,Lindsay C. Botten +6 more
TL;DR: In this paper, a multipole method for calculating the modes of microstructured optical fibers is described, which uses a multi-hole expansion centered on each hole to enforce boundary conditions accurately and matches expansions with different origins by use of addition theorems.