0000000000713719

AUTHOR

Brian Joseph Mangan

showing 2 related works from this author

Multicore optical fibres for astrophotonics

2011

We report progress towards multimode (MM) fibre filters for suppressing the OH emission that hinders ground-based observation of the early Universe. Fibre Bragg gratings (FBGs) can filter these narrow spectral lines in single-mode (SM) fibres [1]. Implementing them in MM fibres well-matched to astronomical instruments requires transitions between the MM fibre and several SM fibres [2]. Such hand-crafted “photonic lanterns” require many identical FBGs to be made and spliced in place. Instead we are pursuing the idea in multicore (MC) fibres, Fig. 1(a). The FBG is written at once in all the SM cores. The fibre is jacketed with low-index glass and tapered to form the core and cladding of a MM …

Multi-core processorOptical fiberMaterials scienceMulti-mode optical fiberbusiness.industryCladding (fiber optics)Spectral linelaw.inventionSubwavelength-diameter optical fibreOpticsFiber Bragg gratinglawPhotonicsbusiness2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC)
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"Photonic lantern" spectral filters in multi-core fibre

2012

Fiber Bragg gratings are written across all 120 single-mode cores of a multi-core optical Fiber. The Fiber is interfaced to multimode ports by tapering it within a depressed-index glass jacket. The result is a compact multimode "photonic lantern" filter with astrophotonic applications. The tapered structure is also an effective mode scrambler.

Mode scramblerPHOSFOSMulti-mode optical fiberOptical fiberMaterials sciencebusiness.industryAstrophysics::Instrumentation and Methods for AstrophysicsPhysics::OpticsEquipment DesignAtomic and Molecular Physics and Opticslaw.inventionSubwavelength-diameter optical fibreEquipment Failure AnalysisOpticsFiber Bragg gratinglawOptoelectronicsComputer-Aided DesignPhotonicsbusinessFiltrationOptical FibersPhotonic-crystal fiber
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