Solution doping of microstructured polymer optical fibres

Large, M. I.; Ponrathnam, S.; Argyros, Alexander; Pujari, Narahari S.; Cox, Felicity

doi:10.1364/opex.12.001966

Cited by 50 publications

(27 citation statements)

References 8 publications

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“…We assume that the molecules have uniform density up to a maximum penetration depth from the film surface, a profile similar to case II diffusion29 and to neutron scattering measurements of nitroaromatic diffusion in dendrimer films 30. Case II diffusion has previously been observed in the solvent ingress process in polymers, for instance the transportation of methanol mixed with Rhodmine 6G into poly(methyl methacrylate) (PMMA) 31–33. In our model, the polymer film is divided into two regions by the penetration depth of the DNB molecules as shown in Figure 4.…”

Section: Theoretical Simulationmentioning

confidence: 97%

Sensitive Explosive Vapor Detection with Polyfluorene Lasers

Yang

Turnbull

Samuel

2010

Adv Funct Materials

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Distributed feedback organic semiconductor lasers based on polyfluorene are shown to be suitable for use as chemical sensors for the detection of nitroaromatic‐based explosive vapors. The laser threshold is increased by a factor of 1.8 and the slope efficiency is reduced by a factor of 3 after exposure to the vapor. The sensing efficiency depends strongly on the excitation energy with a maximum efficiency of 85%. The temporal dynamics of the laser response to the analyte have been investigated. The laser emission falls to 60% of its initial value in 46 s. A model is developed to offer some insight into the diffusion of the vapor molecules inside the polymer layer.

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Section: Theoretical Simulationmentioning

confidence: 97%

Sensitive Explosive Vapor Detection with Polyfluorene Lasers

Yang

Turnbull

Samuel

2010

Adv Funct Materials

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“…Since then mPOFs with a large variety of hole structures and thus specific optical properties, have been fabricated at the OFTC, including endlessly single-mode mPOFs [2][3], multi-mode graded-index mPOFs (GImPOFs) [2,4], hollow-core photonic bandgap guiding mPOFs [2][3]5], highly birefringent mPOFs [2], twin-core mPOFs, [2], rectangular core mPOFs [4], solution-doped mPOFs [3,6]. All these mPOFs have been made of conventional PMMA, which is commercially available in optical-grade quality granulates and low industry-grade solid rods.…”

Section: Introductionmentioning

confidence: 99%

Cleaving of TOPAS and PMMA microstructured polymer optical fibers: Core-shift and statistical quality optimization

Stefani

Nielsen

Rasmussen

et al. 2012

Optics Communications

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“…In an mPOF preform produced by drilling holes into a cylinder of PMMA, the hole diameter will be typically of the order of 1 mm. In the first demonstration of solution doping a two stage drawing process was used with the liquid being added after the first stage following annealing of the resulting preform when the holes were approximately 250 μm in diameter 14 . At this scale it is still very easy to fill the holes selectively with liquid, which in this case was Rhodamine 6G dye dissolved in methanol.…”

Section: Sensing Within the Fibre Holesmentioning

confidence: 99%

Polymer photonic crystal fibre for sensor applications

Webb

2010

Optical Sensing and Detection

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Polymer photonic crystal fibres combine two relatively recent developments in fibre technology. On the one hand, polymer optical fibre has very different physical and chemical properties to silica. In particular, polymer fibre has a much smaller Young's modulus than silica, can survive higher strains, is amenable to organic chemical processing and, depending on the constituent polymer, may absorb water. All of these features can be utilised to extend the range of applications of optical fibre sensors. On the other hand, the photonic crystal -or microstructured -geometry also offers advantages: flexibility in the fibre design including control of the dispersion properties of core and cladding modes, the possibility of introducing minute quantities of analyte directly into the electric field of the guided light and enhanced pressure sensitivity. When brought together these two technologies provide interesting possibilities for fibre sensors, particularly when combined with fibre Bragg or long period gratings. This paper discusses the features of polymer photonic crystal fibre relevant to sensing and provides examples of the applications demonstrated to date.

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Solution doping of microstructured polymer optical fibres

Cited by 50 publications

References 8 publications

Sensitive Explosive Vapor Detection with Polyfluorene Lasers

Sensitive Explosive Vapor Detection with Polyfluorene Lasers

Cleaving of TOPAS and PMMA microstructured polymer optical fibers: Core-shift and statistical quality optimization

Polymer photonic crystal fibre for sensor applications

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