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专利名称：Method of optical fibre grating fabrication发明人：Boschis, Laura,Emelli, Enrico,Rossotto,
Oriana,Tallone, Luigi
申请号：EP99125282.6申请日：19991218公开号：EP1014124B1公开日：20021113
摘要：An optical fibre (F) is sequentially submitted to a first and a second exposure tothe grating writing radiation. The first exposure (Fig. 1) is performed by positioning thefibre (F) in proximity of a phase mask (3), so as to expose the same fibre (F) to a radiationof which the intensity is spatially modulated by the interference fringes generated by thephase mask (3) itself. The second exposure (Fig. 2) is performed with the fibre spacedapart from the phase mask (3) in the propagation direction of the writing radiation (1) bya sufficient distance in order the radiation incident on the fibre (F) is substantially definedby the first diffraction orders generated by the phase mask (3) in a situation in whichthere is basically no reciprocal interference among said first orders.
申请人：AGILENT TECHNOLOGIES INC
地址：US
国籍：US
代理机构：Riederer Freiherr von Paar zu Schönau, Anton
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