| 摘要 |
A monomode optical fibre provided for transporting light having a wavelength lambda with 480 ≤ lambda ≤ 550 nm, said fibre comprising a core made of a first transparent dielectric material, having a first refractive index nc and a substantially circular cross-section with a radius dimension a, said fibre further comprising a first cladding coaxially applied on said core and made of a second transparent dielectric material having a second refractive index nm1, wherein nm1 < nc, The values of nc and nm1 are chosen in such a manner that the numerical aperture <MATH> is less than 0.1 and wherein said radius dimension a > 2 mu m. <IMAGE>
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