发明名称 |
Fabrication of optical waveguide gratings |
摘要 |
An optical grating fabrication apparatus having a phase mask for dividing an incident light beam into a plurality of diffracted beams and a focusing arrangement for receiving light from the phase mask and converging at least two non-zero-order diffracted beams together so as to generate an interference region of a characteristic period between the converged beams so that a grating structure can be impressed on an optical waveguide placed in the interference region. Further, a translation stage is arranged to move the phase mask and at least a part of the focusing arrangement with respect to one another under control of a control circuit so as to alter the angle of convergence of the converged beams and thus controllably tune the characteristic period. |
申请公布号 |
AU9551998(A) |
申请公布日期 |
1999.05.17 |
申请号 |
AU19980095519 |
申请日期 |
1998.10.23 |
申请人 |
PIRELLI CAVI E SISTEMI S.P.A. |
发明人 |
RICHARD IAN LAMING;MORTEN IBSEN |
分类号 |
G02B5/18;G02B6/02;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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