Journal
OPTICS LETTERS
Volume 37, Issue 3, Pages 392-394Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.37.000392
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Funding
- Spanish Ministerio de Educacion
- UK Science and Technology Facilities Council (STFC) [ST/H005595/1]
- UK Engineering and Physical Sciences Research Council (EPSRC) [EP/F067690/1, EP/G030227/1, EP/D048672/1]
- UK-India Education and Research Initiative (UKIERI)
- Engineering and Physical Sciences Research Council [EP/G030227/1, EP/D048672/1, EP/F067690/1] Funding Source: researchfish
- EPSRC [EP/D048672/1, EP/G030227/1, EP/F067690/1] Funding Source: UKRI
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We report the fabrication of single-mode buried channel waveguides for the whole mid-IR transparency range of chalcogenide sulphide glasses (lambda <= 11 mu m), by means of direct laser writing. We have explored the potential of this technology by fabricating a prototype three-dimensional three-beam combiner for future application in stellar interferometry that delivers a monochromatic interference visibility of 99.89% at 10.6 mu m and an ultrahigh bandwidth (3-11 mu m) interference visibility of 21.3%. These results demonstrate that it is possible to harness the whole transparency range offered by chalcogenide glasses on a single on-chip instrument by means of direct laser writing, a finding that may be of key significance in future technologies such as astrophotonics and biochemical sensing. (C) 2012 Optical Society of America
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