文档介绍：[54]通过相位掩膜板或者其它同样的MASK写布拉格光栅的方法
[75]inventors : h , Kanata ;Bernard Y .malo ,Gatineau ;Francois C .Bilodeau ;Derwyx c .Johnson ,both of Nepean ,all of Canada
[73]Assignee:Her Majesty in Right of Canada as represented by the minister munications , Ottawa, Canada
[21].:967,774
[22]Filed: Oct,29,1992
[51]……………G02B6/34;G02B6/12;H01L31/18
[52]………….385/37;385/14;385/129;385/130;385/147;359/566;359/569;359/573;
359/900; 437/4; 437/51
[58]Field of Search…………385/14,37,129,130, 385/131,147; 359/558,559,562,566,569,
571,573,576,900; 437/51;430/4
[56] References Cited
. PATENT DOCUMENTS
4,241,109 12/1980 Johnson…………………………………………………………….385/123
4,806,442 2/1989 Shirasaki et al………………………………………………………430/4
4,807,950 2/1989 Glenn et al. ………………………………………………………..359/566X
4,947,413 8/1990 Jewell et al. ………………………………………………………359/559X
5,042,897 8/1991 Meltz et al. ……………………………………………………….385/37
5,042,898 8/1991 Morey et al. ………………………………………………………385/37X
5,058,977 10/1991 Sorin…………………………………………………………………385/37X
5,066,133 11/1991 Brienza……………………………………………………………….385/37X
5,101,297 3/1992 Yoshida et al. ………………………………………………………..359/566
5,104,209 4/1992 Hill et al. …………………………………………………………..385/27
5,175,647 12/1992 Gupta et al. …………………………………………………………..359/566
5,218,651 6/1993 Faco et al. ……………………………………………………………385/37X
5,271,024 12/1993 Huber…………………………………………………………………385/37X
FOREIGN PATENT DOCUMENTS
0175460 3/1986 European . …………………………………………………...385/37X
0220652 5/1987 European . …………………………………………………385/37X
0271002 6/1988 European Pat. Off. …………………………………………………385/37X
primary examiner –Brian Healy
Attorney ,Agent ,or Firm –Pascal & Associates
[57] 摘要
通过特殊的相位掩膜板(silica glass phase grating mask)把grating写入到光纤纤芯。Mask和光纤靠得很近。用紫外激光通过mask用平行入射方式照射纤芯,从而在纤芯产生和mask相应的干涉模式。
下面是本专利的一组图片
5,367,588
METHOD OF FABRICATING BRAGG GRATINGS USING A SILICA GLASS PHASE MASK AND MASK USED BY SAME
FIELD OF THE INVENTION
这个发明是在光传播介质例如光纤上,制作Bragg