发明名称 |
FABRICATION OF OPTICAL WAVEGUIDE GRATINGS |
摘要 |
Optical grating fabrication apparatus comprises a phase mask (40) for dividi ng an incident light beam (30) into a plurality of diffracted beams; and a focusing arrangement (60) 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 between the converged beams so that a gratin g structure can be impressed on an optical waveguide (80) placed in the interference region; the phase mask and at least a part of the focusing arrangement being moveable with respect to one another so as to alter the angle of convergence of the converged beams.
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申请公布号 |
CA2307189(C) |
申请公布日期 |
2007.08.07 |
申请号 |
CA19982307189 |
申请日期 |
1998.10.23 |
申请人 |
PIRELLI CAVI E SISTEMI S.P.A. |
发明人 |
LAMING, RICHARD IAN;IBSEN, MORTEN |
分类号 |
G02B5/18;G02B6/028;G02B6/02;G02B6/124;G02B6/34 |
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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