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    • 6. 发明申请
    • PROCESS FOR THE MANUFACTURE OF OBJECTS WITH SMALL COMPLEX CROSS-SECTIONS
    • 用小型复杂交叉部分制造物体的过程
    • WO1990014316A1
    • 1990-11-29
    • PCT/GB1990000765
    • 1990-05-17
    • NATIONAL RESEARCH DEVELOPMENT CORPORATIONJANSEN, Klaus
    • NATIONAL RESEARCH DEVELOPMENT CORPORATION
    • C03B37/012
    • C03B23/047C03B37/01205C03B2203/02C03B2203/04C03B2203/12C03B2203/18C03B2203/20G02B6/06G02B6/10G02B6/2843G02B6/2856G02B6/4249
    • A need often arises for micro-optical components, such as optical fibres and couplers, and micromechanical components with complex cross-sections which are different at opposite ends or, for directional couplers, at points along the length of the couplers. In the present invention, a soluble material (38) is added to at least one primary preform (35) to make a secondary preform (37) of circular cross-section. The secondary preform is then drawn to reduce the cross-section of the primary preform as required but the cross-sectional shape of the secondary preform is preserved. The soluble material is then removed and then part of the resulting product is heated and plastically deformed to give the required different ends (39 and 40) or other different cross-sections. In another aspect of the invention two soluble materials are used with different solubilities. After the most soluble material has been removed, an operation involving the less soluble material can be carried out, and then the less soluble material is at least partially removed.
    • 对于诸如光纤和耦合器的微光学部件和具有复杂横截面的微机械部件,通常会出现在相对端不同的微结构部件,或者对于定向耦合器,在沿着耦合器的长度的点处。 在本发明中,将可溶性材料(38)添加到至少一个初级预制件(35)中以制造圆形横截面的次级预制件(37)。 然后拉伸二次预制件以根据需要减小初级预制件的横截面,但是保留次级预制件的横截面形状。 然后除去可溶性材料,然后将所得产物的一部分加热并塑性变形,得到所需的不同端部(39和40)或其它不同的横截面。 在本发明的另一方面,使用具有不同溶解度的两种可溶性材料。 在最易溶解的材料被去除之后,可以进行涉及较不溶解的材料的操作,然后至少部分地去除较不溶的材料。