Single mode chalcogenide glass fiber as wavefront filter for the DARWIN planet finding misson
| Autor: | Sylvain Danto, Lun K. Cheng, W.L.M. Gielesen, Patrick Houizot, Jacques Lucas, Catherine Boussard-Plédel, A. J. Faber, J. Pereira do Carmo |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Optical fiber Glass fibers Wavefronts Chalcogenide Glass fiber Refractive index Single mode waveguides Chalcogenide glass law.invention Carbon dioxide lasers chemistry.chemical_compound Absorption spectroscopy Optics law Optical fibers Mode propagation TS - Technical Sciences Chalcogenide glass fibers Industrial Innovation Fluid Mechanics Chemistry & Energetics business.industry Numerical aperture Single-mode optical fiber Planet finding PMC - Process Modelling & Control Bandpass filters Cladding (fiber optics) Optical waveguides Fibers chemistry Far-field intensity distribution Fiber configuration business Chalcogenides |
| Zdroj: | Costeraste J.Armandillo, E.Karafolas, N., 6th International Conference on Space Optics, ICSO 2006. 27 June 2006 through 30 June 2006, 10567 |
| Popis: | The development of single mode chalcogenide glass fibers as wavefront filter for the DARWIN mission is reported. Melting procedures and different preform techniques for manufacturing core-cladding chalcogenide fibers are described. Bulk glass samples on the basis of Te-As-Se- and high Te-compositions have been characterized optically, by measurement of the absorption spectrum and the refractive index in the region 4 – 20 μm. Several chalcogenide core-cladding glass fiber configurations have been drawn and examined by microscopy. The mode propagation behaviour and numerical aperture of fiber samples have been determined by far field intensity distribution measurements, using a CO2 laser at 10.6 μm. Single mode waveguide performance has been demonstrated for several fiber samples, coated with an absorbing Gallium layer for stripping of cladding modes. |
| Databáze: | OpenAIRE |
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