Academic literature on the topic 'Optical fibre sensing; microstructured optical fibres; fluorescence sensing'

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Journal articles on the topic "Optical fibre sensing; microstructured optical fibres; fluorescence sensing"

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Afshar V., Shahraam, Stephen C. Warren-Smith, and Tanya M. Monro. "Enhancement of fluorescence-based sensing using microstructured optical fibres." Optics Express 15, no. 26 (2007): 17891. http://dx.doi.org/10.1364/oe.15.017891.

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Peng, Li Rong, Xing Hua Yang, Li Bo Yuan, En Ming Zhao, Le Li, and Shen Zi Luo. "Ammonia Detection by Dye Immobilized Microstructured Optical Fiber." Advanced Materials Research 255-260 (May 2011): 2131–35. http://dx.doi.org/10.4028/www.scientific.net/amr.255-260.2131.

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An optical ammonia probe was fabricated based on Microstructured Polymer Optical Fiber (MPOFs) modified by eosin doped silica gel films.The structure of this probe was based on microstructured polymer optical fibers with microholes and these microholes could be used as the substrate of sensing materials and minor reaction pools. The sensing properties of the optical fiber sensor to gaseous ammonia were investigated at room temperature. The sensing probe showed different fluorescence intensity at 576 nm to different concentrations of trace ammonia in carrier gas of nitrogen. The response range was 20-350 ppm, with short response time within 600 ms.
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Argyros, Alexander. "Microstructures in Polymer Fibres for Optical Fibres, THz Waveguides, and Fibre-Based Metamaterials." ISRN Optics 2013 (February 12, 2013): 1–22. http://dx.doi.org/10.1155/2013/785162.

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This paper reviews the topic of microstructured polymer fibres in the fields in which these have been utilised: microstructured optical fibres, terahertz waveguides, and fibre-drawn metamaterials. Microstructured polymer optical fibres were initially investigated in the context of photonic crystal fibre research, and several unique features arising from the combination of polymer and microstructure were identified. This lead to investigations in sensing, particularly strain sensing based on gratings, and short-distance data transmission. The same principles have been extended to waveguides at longer wavelengths, for terahertz frequencies, where microstructured polymer waveguides offer the possibility for low-loss flexible waveguides for this frequency region. Furthermore, the combination of microstructured polymer fibres and metals is being investigated in the fabrication of metamaterials, as a scalable method for their manufacture. This paper will review the materials and fabrication methods developed, past and current research in these three areas, and future directions of this fabrication platform.
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Kostecki, Roman, Heike Ebendorff-Heidepriem, Stephen C. Warren-Smith, Grant McAdam, Claire Davis, and Tanya M. Monro. "Optical Fibres for Distributed Corrosion Sensing - Architecture and Characterisation." Key Engineering Materials 558 (June 2013): 522–33. http://dx.doi.org/10.4028/www.scientific.net/kem.558.522.

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This paper summarises recent work conducted on the development of exposed core microstructured optical fibres for distributed corrosion sensing. Most recently, exposed-core fibres have been fabricated in silica glass, which is known to be reliable under a range of processing and service environments. We characterise the stability of these new silica fibres when exposed to some typical sensing and storage environments. We show the background loss to be the best achieved to date for exposed-core fibres, while the transmission properties are up to ~2 orders of magnitude better than for the previously reported exposed-core fibres produced in soft glass. This provides a more robust fibre platform for corrosion sensing conditions and opens up new opportunities for distributed optical fibre sensors requiring long-term application in harsh environments.
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François, Alexandre, Tess Reynolds, Nicolas Riesen, Jonathan M. M. Hall, Matthew R. Henderson, Enming Zhao, Shahraam Afshar V., and Tanya M. Monro. "Combining whispering gallery mode lasers and microstructured optical fibers: limitations, applications and perspectives for in-vivo biosensing." MRS Advances 1, no. 33 (2016): 2309–20. http://dx.doi.org/10.1557/adv.2016.342.

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ABSTRACTWhispering gallery modes (WGMs) have been widely studied over the past 20 years for various applications, including biological sensing. While the WGM-based sensing approaches reported in the literature have shown tremendous performance down to single molecule detection, at present such sensing technologies are not yet mature and still have significant practical constraints that limit their use in real-world applications. Our work has focused on developing a practical, yet effective, WGM-based sensing platform capable of being used as a dip sensor for in-vivo biosensing by combining WGM fluorescent microresonators with silica Microstructured Optical Fibers (MOFs).We recently demonstrated that a suspended core MOF with a dye-doped polymer microresonator supporting WGMs positioned onto the tip of the fiber, can be used as a dip sensor. In this architecture the resonator is anchored to one of the MOF air holes, in contact with the fiber core, enabling a significant portion of the evanescent field from the fiber to overlap with the sphere and hence excite the fluorescent WGMs. This architecture allows for remote excitation and collection of the WGMs. The fiber also permits easy manipulation of the microresonator for dip sensing applications, and hence alleviates the need for a complex microfluidic interface. More importantly, it allows for an increase in both the excitation and collection efficiency compared to free space coupling, and also improves the Q factor.In this paper we present our recent results on microstructured fiber tip WGM-based sensors and show that this sensing platform can be used in clinical diagnostics, for detecting various clinically relevant biomarkers in complex clinical samples.
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Han, Mengke, Ming Chen, Heike Ebendorff-Heidepriem, Cheng Fang, Anjun Qin, Hu Zhang, Ben Zhong Tang, Youhong Tang, and Yinlan Ruan. "An optical fibre sensor for remotely detecting water traces in organic solvents." RSC Advances 6, no. 85 (2016): 82186–90. http://dx.doi.org/10.1039/c6ra17475b.

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Schartner, Erik P., Georgios Tsiminis, Matthew R. Henderson, Stephen C. Warren-Smith, and Tanya M. Monro. "Quantification of the fluorescence sensing performance of microstructured optical fibers compared to multi-mode fiber tips." Optics Express 24, no. 16 (August 3, 2016): 18541. http://dx.doi.org/10.1364/oe.24.018541.

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Ehrlich, Katjana, Tushar R. Choudhary, Muhammed Ucuncu, Alicia Megia-Fernandez, Kerrianne Harrington, Harry A. C. Wood, Fei Yu, et al. "Time-Resolved Spectroscopy of Fluorescence Quenching in Optical Fibre-Based pH Sensors." Sensors 20, no. 21 (October 27, 2020): 6115. http://dx.doi.org/10.3390/s20216115.

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Numerous optodes, with fluorophores as the chemical sensing element and optical fibres for light delivery and collection, have been fabricated for minimally invasive endoscopic measurements of key physiological parameters such as pH. These flexible miniaturised optodes have typically attempted to maximize signal-to-noise through the application of high concentrations of fluorophores. We show that high-density attachment of carboxyfluorescein onto silica microspheres, the sensing elements, results in fluorescence energy transfer, manifesting as reduced fluorescence intensity and lifetime in addition to spectral changes. We demonstrate that the change in fluorescence intensity of carboxyfluorescein with pH in this “high-density” regime is opposite to that normally observed, with complex variations in fluorescent lifetime across the emission spectra of coupled fluorophores. Improved understanding of such highly loaded sensor beads is important because it leads to large increases in photostability and will aid the development of compact fibre probes, suitable for clinical applications. The time-resolved spectral measurement techniques presented here can be further applied to similar studies of other optodes.
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Berneschi, Simone, Andrea Barucci, Francesco Baldini, Franco Cosi, Franco Quercioli, Stefano Pelli, Giancarlo C. Righini, et al. "Optical Fibre Micro/Nano Tips as Fluorescence-Based Sensors and Interrogation Probes." Optics 1, no. 2 (August 27, 2020): 213–42. http://dx.doi.org/10.3390/opt1020017.

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Optical fibre micro/nano tips (OFTs), defined here as tapered fibres with a waist diameter ranging from a few microns to tens of nanometres and different tip angles (i.e., from tens of degrees to fractions of degrees), represent extremely versatile tools that have attracted growing interest during these last decades in many areas of photonics. The field of applications can range from physical and chemical/biochemical sensing—also at the intracellular levels—to the development of near-field probes for microscope imaging (i.e., scanning near-field optical microscopy (SNOM)) and optical interrogation systems, up to optical devices for trapping and manipulating microparticles (i.e., optical tweezers). All these applications rely on the ability to fabricate OFTs, tailoring some of their features according to the requirements determined by the specific application. In this review, starting from a short overview of the main fabrication methods used for the realisation of these optical micro/nano structures, the focus will be concentrated on some of their intriguing applications such as the development of label-based chemical/biochemical sensors and the implementation of SNOM probes for interrogating optical devices, including whispering gallery mode microcavities.
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Moś, Joanna Ewa, Karol Antoni Stasiewicz, and Leszek Roman Jaroszewicz. "Liquid crystal cell with a tapered optical fiber as an active element to optical applications." Photonics Letters of Poland 11, no. 1 (April 3, 2019): 13. http://dx.doi.org/10.4302/plp.v11i1.879.

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The work describes the technology of a liquid crystal cell with a tapered optical fiber as an element providing light. The tapered optical fiber with the total optical loss of 0.22 ± 0.07 dB, the taper waist diameter of 15.5 ± 0.5 μm, and the elongation of 20.4 ± 0.3 mm has been used. The experimental results are presented for a liquid crystal cell filled with a mixture 1550* for parallel orientation of LC molecules to the cross section of the taper waist. Measurement results show the influence of the electrical field with voltage in the range of 0-200 V, without, as well as with different modulation for spectral characteristics. The sinusoidal and square signal shapes are used with a 1-10 Hz frequency range. Full Text: PDF ReferencesZ. Liu, H. Y. Tam, L. Htein, M. L.Vincent Tse, C. Lu, "Microstructured Optical Fiber Sensors", J. Lightwave Technol. 35, 16 (2017). CrossRef T. R. Wolinski, K. Szaniawska, S. Ertman1, P. Lesiak, A. W. Domański, R. Dabrowski, E. Nowinowski-Kruszelnicki, J. Wojcik "Influence of temperature and electrical fields on propagation properties of photonic liquid-crystal fibres", Meas. Sci. Technol. 17, 5 (2006). CrossRef K. Nielsen, D. Noordegraaf, T. Sørensen, A. Bjarklev,T. Hansen, "Selective filling of photonic crystal fibres", J. Opt. A: Pure Appl. Opt. 7, 8 (2005). CrossRef A. A. Rifat, G. A. Mahdiraji, D. M. Chow, Y, Gang Shee, R. Ahmed, F. Rafiq, M Adikan, "Photonic Crystal Fiber-Based Surface Plasmon Resonance Sensor with Selective Analyte Channels and Graphene-Silver Deposited Core", Sensors 15, 5 (2015) CrossRef Y. Huang, Z.Tian, L.P. Sun, D. Sun, J.Li, Y.Ran, B.-O. Guan "High-sensitivity DNA biosensor based on optical fiber taper interferometer coated with conjugated polymer tentacle", Opt. Express 23, 21 (2015). CrossRef X. Wang, O. S. Wolfbeis, "The 2016 Annual Review Issue", Anal. Chem., 88, 1 (2016). CrossRef Ye Tian, W. Wang, N. Wu, X. Zou, X.Wang, "Tapered Optical Fiber Sensor for Label-Free Detection of Biomolecules", Sensors 11, 4 (2011). CrossRef O. Katsunari, Fundamentals of Optical Waveguides, (London, Academic Press, (2006). DirectLink A. K. Sharma, J. Rajan, B.D. Gupta, "Fiber-Optic Sensors Based on Surface Plasmon Resonance: A Comprehensive Review", IEEE Sensors Journal 7, 8 (2007). CrossRef C. Caucheteur, T. Guo, J. Albert, "Review of plasmonic fiber optic biochemical sensors: improving the limit of detection", Anal. Bioanal.Chem. 407, 14 (2015). CrossRef S. F. Silva L. Coelho, O. Frazão, J. L. Santos, F. X.r Malcata, "A Review of Palladium-Based Fiber-Optic Sensors for Molecular Hydrogen Detection", IEEE SENSORS JOURNAL 12, 1 (2012). CrossRef H. Waechter, J. Litman, A. H. Cheung, J. A. Barnes, H.P. Loock, "Chemical Sensing Using Fiber Cavity Ring-Down Spectroscopy", Sensors 10, 3 (2010). CrossRef S. Zhu, F. Pang, S. Huang, F.Zou, Y.Dong, T.Wang, "High sensitivity refractive index sensor based on adiabatic tapered optical fiber deposited with nanofilm by ALD", Opt. Express 23, 11 (2015). CrossRef L. Zhang, J. Lou, L. Tong, "Micro/nanofiber optical sensors", Photonics sensor 1, 1 (2011). CrossRef L.Tong, J. Lou, E. Mazur, "Single-mode guiding properties of subwavelength-diameter silica and silicon wire waveguides", Opt. Express 11, 6 (2004). CrossRef H. Moyyed, I. T. Leite, L. Coelho, J. L. Santos, D. Viegas, "Analysis of phase interrogated SPR fiber optic sensors with bimetallic layers", IEEE Sensors Journal 14, 10 (2014). CrossRef A. González-Cano, M. Cruz Navarette, Ó. Esteban, N. Diaz Herrera , "Plasmonic sensors based on doubly-deposited tapered optical fibers", Sensors 14, 3 (2014). CrossRef K. A. Stasiewicz, J.E. Moś, "Threshold temperature optical fibre sensors", Opt. Fiber Technol. 32, (2016). CrossRef L. Zhang, F. Gu, J. Lou, X. Yin, L. Tong, "Fast detection of humidity with a subwavelength-diameter fiber taper coated with gelatin film", Opt. Express 16, 17 (2008). CrossRef S.Zhu, F.Pang, S. Huang, F. Zou, Q. Guo, J. Wen, T. Wang, "High Sensitivity Refractometer Based on TiO2-Coated Adiabatic Tapered Optical Fiber via ALD Technology", Sensors 16, 8 (2016). CrossRef G.Brambilla, "Optical fibre nanowires and microwires: a review", J. Optics 12, 4 (2010) CrossRef M. Ahmad, L.L. Hench, "Effect of taper geometries and launch angle on evanescent wave penetration depth in optical fibers", Biosens. Bioelectron. 20, 7 (2005). CrossRef L.M. Blinov, Electrooptic Effects in Liquid Crystal Materials (New York, Springftianer, 1994). CrossRef L. Scolari, T.T. Alkeskjold, A. Bjarklev, "Tunable Gaussian filter based on tapered liquid crystal photonic bandgap fibre", Electron. Lett. 42, 22 (2006). CrossRef J. Moś, M. Florek, K. Garbat, K.A. Stasiewicz, N. Bennis, L.R. Jaroszewicz, "In-Line Tunable Nematic Liquid Crystal Fiber Optic Device", J. of Lightwave Technol. 36, 4 (2017). CrossRef J. Moś, K A Stasiewicz, K Garbat, P Morawiak, W Piecek, L R Jaroszewicz, "Tapered fiber liquid crystal hybrid broad band device", Phys. Scripta. 93, 12 (2018). CrossRef Ch. Veilleux, J. Lapierre, J. Bures, "Liquid-crystal-clad tapered fibers", Opt. Lett. 11, 11 (1986). CrossRef R. Dąbrowski, K. Garbat, S. Urban, T.R. Woliński, J. Dziaduszek, T. Ogrodnik, A,Siarkowska, "Low-birefringence liquid crystal mixtures for photonic liquid crystal fibres application", Liq. Cryst. 44, (2017). CrossRef S. Lacroix, R. J. Black, Ch. Veilleux, J. Lapierre, "Tapered single-mode fibers: external refractive-index dependence", Appl. Opt., 25, 15 (1986). CrossRef J.F. Henninot, D. Louvergneaux , N.Tabiryan, M. Warenghem, "Controlled Leakage of a Tapered Optical Fiber with Liquid Crystal Cladding", Mol. Cryst.and Liq.Cryst., 282, 1(1996). CrossRef
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Dissertations / Theses on the topic "Optical fibre sensing; microstructured optical fibres; fluorescence sensing"

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Warren-Smith, Stephen Christopher. "Fluorescence-based chemical sensing using suspended-core microstructured optical fibres." Thesis, 2011. http://hdl.handle.net/2440/69718.

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This thesis contains a study on the fluorescence based chemical sensing properties of microstructured optical fibres. Specifically, suspended core optical micro/nano-wires, including those with the core partially exposed along their length, are studied both theoretically and experimentally. Comparisons are made between these exposed-core and enclosed-core optical fibres in terms of their fluorescence sensing performance, fabrication, and function. The application of corrosion sensing of aluminium alloys was the primary motivator for this project and methods for achieving this are presented. However, the findings presented in this thesis could be extended to many other biological and chemical applications. Chapter 1 outlines the motivation of the work and the structure of the thesis. Chapter 2 reviews the state of the art for optical fibre chemical sensing. In Chapter 3 a theoretical model is derived and used to predict the fluorescence capture of high index contrast small-core fibres using vectorial solutions to Maxwell's equations. This model is subsequently used to compare exposed-core and enclosed-core fibres, where distinct advantages are found for liquid-immersed exposed-core fibres due to their asymmetric refractive index profile. In Chapter 4 the fabrication of both enclosed and exposed suspended-core fibres are demonstrated using the extrusion technique for soft-glass preform development. It is then confirmed experimentally that advantages of using exposed-core fibres include the ability to perform real time and distributed fluorescence based sensing. In Chapter 5 two methods of sensitising these fibres for corrosion sensing of aluminium alloys are investigated. Both methods use a fluorescence based indicator molecule for aluminium ions, which is either embedded into a porous polymer coating or chemically attached via polyelectrolytes.
Thesis (Ph.D.) -- University of Adelaide, School of Chemistry and Physics, 2011
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Schartner, Erik Peter. "Hydrogen peroxide sensing with microstructured optical fibres : fuel, wine & babies." Thesis, 2012. http://hdl.handle.net/2440/84531.

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The capacity to measure the concentration of hydrogen peroxide in solution is critical for many disparate application areas, including wine quality sensing, aviation fuel monitoring and embryology. This thesis covers work related to the development of a low-volume hydrogen peroxide sensor, utilising microstructured optical fibres to perform measurements on small (<20 μL) sample volumes. This work has used the interaction between the guided light and fluorescent molecules within the holes of microstructured optical fibres to perform detection. This interaction has been used firstly to optimise the sensing architecture, using photostable Quantum dots as a characterisation tool. This work also has potential biosensing applications, using the Quantum dots was fluorescent labels for antibody reactions. This thesis covers work related to lowering the effective detection limit using microstructured optical fibres to detect fluorescent molecules, utilising novel glasses and implementing a theoretical model to reduce the amount of background signal that is generated within the fibre. New candidates for fluorescent molecules in fibre are also examined, resulting in a further reduction of the minimum detectable concentration. The second use of this interaction with the guided light involved the use of fluorophores that react with hydrogen peroxide to produce an increase in fluorescence. This increase in fluorescence can then be observed by monitoring the signal from either end of the fibre. By establishing a calibration curve that gives an expected fluorescence signal for a given hydrogen peroxide concentration it is then possible to correlate the observed fluorescence with the concentration of hydrogen peroxide present within the sample. Additionally this thesis presents practical improvements to microstructured fibre dip sensors, including splicing the sensing fibres to commercial optical fibres as well as methods for mixing low volumes of liquids to enable rapid detection of target molecules.
Thesis (Ph.D.) -- University of Adelaide, School of Chemistry and Physics, 2012
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Conference papers on the topic "Optical fibre sensing; microstructured optical fibres; fluorescence sensing"

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Schartner, E. P., R. T. White, S. C. Warren-Smith, and T. M. Monro. "Practical sensitive fluorescence sensing with microstructured fibres." In 20th International Conference on Optical Fibre Sensors, edited by Julian D. C. Jones. SPIE, 2009. http://dx.doi.org/10.1117/12.835350.

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Warren-Smith, Stephen C., Heike Ebendorff-Heidepriem, Tze Cheung Foo, Roger Moore, Claire Davis, and Tanya M. Monro. "Exposed-core microstructured fibres for real-time fluorescence sensing." In 20th International Conference on Optical Fibre Sensors, edited by Julian D. C. Jones. SPIE, 2009. http://dx.doi.org/10.1117/12.834457.

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Schartner, Erik P., Georgios Tsiminis, Matthew R. Henderson, Stephen C. Warren-Smith, and Tanya M. Monro. "Comparison of the Fluorescence Sensing Performance of Microstructured Optical Fibres and Multi-mode Fibre Tips." In Australian Conference on Optical Fibre Technology. Washington, D.C.: OSA, 2016. http://dx.doi.org/10.1364/acoft.2016.at5c.6.

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Afshar V., Shahraam, Yinlan Ruan, Stephen C. Warren-Smith, Heike Ebendorff-Heidepriem, and Tanya M. Monro. "Highly efficient fluorescence sensing using microstructured optical fibres: general model and experiment." In 19th International Conference on Optical Fibre Sensors, edited by David D. Sampson. SPIE, 2008. http://dx.doi.org/10.1117/12.785997.

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Warren-Smith, S. C., S. Afshar V., and T. M. Monro. "Highly efficient fluorescence sensing using microstructured optical fibres: side-access and thin-layer configurations." In 19th International Conference on Optical Fibre Sensors, edited by David D. Sampson. SPIE, 2008. http://dx.doi.org/10.1117/12.785887.

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Monro, Tanya M. "Developments in soft glass microstructured fibres for sensing, nonlinear fibres and new transmission wavelengths." In 2006 Australian Conference on Optical Fibre technology (ACOFT). IEEE, 2007. http://dx.doi.org/10.1109/acoft.2007.4516188.

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Lwin, Richard, Alexander Argyros, Sergio G. Leon-Saval, and Maryanne C. J. Large. "Strain sensing using long period gratings in microstructured polymer optical fibres." In 21st International Conference on Optical Fibre Sensors (OFS21). SPIE, 2011. http://dx.doi.org/10.1117/12.885672.

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Monro, Tanya M. "Developments in soft glass microstructured fibres for sensing, nonlinear fibres and new transmission wavelengths." In 2007 the Joint International Conference on Optical Internet (COIN) and Australian Conference on Optical Fibre Technology (ACOFT). IEEE, 2007. http://dx.doi.org/10.1109/coinacoft.2007.4519095.

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Witt, J., M. Steffen, M. Schukar, and K. Krebber. "Investigation of sensing properties of long period gratings based on microstructured polymer optical fibres." In (EWOFS'10) Fourth European Workshop on Optical Fibre Sensors, edited by José Luís Santos, Brian Culshaw, José Miguel López-Higuera, and William N. MacPherson. SPIE, 2010. http://dx.doi.org/10.1117/12.866431.

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