| 摘要 |
This invention relates to a fibre optical grating for use in an optical communication system, said fibre optical grating comprising an optical fibre having a core region (1, 11), extending along a longitudinal axis of said optical fibre, and a cladding region (1, 12), essentially encompassing said core region (1, 11) along said fibre, whereby said optical fibre core region (1, 11) at least partly is manufactured from a photo-sensitive material. Furthermore, a plurality of channels (3a, 3b; 13) is defined in the photosensitive region of the fibre, said channels extending along said longitudinal axis of the fibre. This invention also relates to an optical fibre being usable for production of a fibre optical grating as described above. |
