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We facilitate photonic crystal lasers to sense gases via an additional swelling polymer film. We describe the transduction transfer function and experimentally demonstrate an enhanced ethanol vapor sensitivity over 15 dB with low humidity crosstalk.
Introducing a phase-shift in nanoimprinted polymer dye lasers is shown to increase the probability of single mode lasing from 19% to 99%. Low-index lasers with only one longitudinal mode are thus superior to band-edge lasers.
We demonstrate a photonic crystal (PC) cavity formed post-fabrication by locally modifying the refractive index of a chalcogenide PC by using the photosensitivity of the chalcogenide glass.
We demonstrate reconfigurable microfluidic photonic crystal components in silicon-based membranes by select hole infiltration. We employ a diverse range of fluids and show the capability of filling a single hole. Systematic characterisations of the induced defects are presented.
We demonstrate highly efficient evanescent coupling via a silica loop-nanowire, to ultra-small quantum-dot photonic-crystal cavities. It enables the tuning of both the O utilde-factor and the wavelength of the cavity mode independently.
We achieve efficient coupling to both photonic crystal waveguides and nanocavities in chalcogenide glass via low-loss, highly flexible silica fibre nanowires
We present the first experimental and theoretical results using nonlinear 2D photonic crystals in chalcogenide. This scheme provides a promising platform to realize low power integrated all-optical switching and logic functions.
We describe the fabrication of low-loss, highly flexible silica fibre nanowires which are used to characterise chalcogenide two-dimensional photonic crystal waveguide circuits. Localised coupling is achieved in good agreement with theory.
We recently fabricated chalcogenide photonic crystal slabs (PCSs) using focused ion beam milling. We demonstrated over 98% coupling efficiency to a two-dimensional photonic crystal waveguide in a chalcogenide membrane using evanescent coupling via a tapered optical fibre nanowire. The presentation will discuss the design, fabrication and characterization of chalcogenide-based PCSs and preliminary...
We achieve > 98% coupling efficiency (18 dB) to a highly nonlinear chalcogenide glass photonic crystal membrane waveguide via evanescent coupling from a silica fibre nanowire.
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