An article comprising an optical fibre, the fibre comprising at least one core surrounded by a first outer cladding region, the first outer cladding region being surrounded by a second outer cladding region, the first outer cladding region in the cross-section comprising a number of first outer cladding features having a lower refractive index than any material surrounding the first outer cladding features, wherein for a plurality of said first outer cladding features, the minimum distance between two nearest neighbouring first outer cladding features is smaller than 1.0 $g(m)m or smaller than an optical wavelength of light guided through the fibre when in use; a method of its production, and use thereof
|Country||International Bureau of the World Intellectual Property Organization (WIPO)|
|Publication status||Published - 2003|
Bibliographical noteInternational application published under the World Intellectual Property Organization (WIPO)
Broeng, J., Bjarklev, A. O., Libori, S. E. B., Folkenberg, J. R., & Vienne, G. (2003). OPTICAL FIBRE WITH HIGH NUMERICAL APERTURE, METHOD OF ITS PRODUCTION, AND USE THEREOF. (Patent No. WO2003019257).