Patent ID: 7065274
Filing Date: 2006-06-20
Classification: G02B

Abstract:
1. An optical coupling device comprising a first dielectric material and a second dielectric material, said coupling device having: an input end for receiving an optical signal, said input end having an input cross-section, said input cross-section having a first fill factor of said first dielectric material; an output end for delivering said optical signal, said output end having an output cross-section, said output cross-section having a second fill factor of said first dielectric material; and an internal portion between said input end and said output end, said internal portion having a plurality of internal cross-sections; wherein said first dielectric material is internally dispersed forming one or more discrete regions within said second dielectric material; wherein said internally dispersed discrete regions include one or more filamentary regions, said filamentary regions extending continuously from said input end through said internal portion to said output end of said device, each of said filamentary regions occupying a fill area in each of said input, internal and output cross-sections, said fill area having a fill size and shape, wherein the fill factor of said first dielectric material varies continuously over the length of said internal portion from said first fill factor at said input cross-section to said second fill factor at said output cross-section, said first fill factor differing from said second fill factor.