发明名称 |
AN OPTICAL GRATING AND A METHOD OF FABRICATING AN OPTICAL GRATING |
摘要 |
PCT No. PCT/GB93/00043 Sec. 371 Date Jun. 15, 1994 Sec. 102(e) Date Jun. 15, 1994 PCT Filed Jan. 11, 1993 PCT Pub. No. WO93/14424 PCT Pub. Date Jul. 22, 1993An optical grating includes a sequence of grating lines, the sequence being such that each grating line is centered on a position which is an integer multiple of a line spacing distance from a datum position on the grating, the sequence of grating lines is non-periodic and the sequence of grating lines is formed from N concatenated subsequences. Each subsequence includes a series of one or more instances of a respective grating line pattern. Such an optical grating has a structure that is more amenable to calculation of the grating lines necessary to achieve a desired characteristic. A method of calculating and fabricating such a grating is also disclosed. |
申请公布号 |
EP0620924(B1) |
申请公布日期 |
1999.03.31 |
申请号 |
EP19930901823 |
申请日期 |
1993.01.11 |
申请人 |
BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY |
发明人 |
WOOD, DAVID, CHARLES;CASSIDY, STEPHEN;WILKINSON, MARK, ROBERT;MCKEE, PAUL, FRANCIS |
分类号 |
G02B5/18;G02B6/02;G02B6/12;G02B6/124 |
主分类号 |
G02B5/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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