Patent ID: 6301420
Filing Date: 2001-10-09
Classification: C03B,G02B

Abstract:
A multicore optical fibre for transmitting radiation comprising:two or more core regions, each core region comprising a substantially transparent core material and having a core refractive index, a core length, and a core diameter, wherein said core regions are arranged within a cladding region,said cladding region having an effective index of refraction and comprising a length of first substantially transparent cladding material, having a first refractive index, wherein said first substantially transparent cladding material has an array of lengths of a second cladding material embedded along its length, wherein said second cladding material has a second refractive index which is less than said first refractive index,said core regions having a refractive index greater than said cladding region and said core regions and said cladding region arranged to propagate radiation input to said fibre along at least one of said core regions by the principle of total internal reflection.