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METHOD FOR DESIGNING AN INDEX PROFILE SUITABLE FOR ENCODING INTO A PHASE MASK FOR MANUFACTURING A COMPLEX OPTICAL GRATING
METHOD FOR DESIGNING AN INDEX PROFILE SUITABLE FOR ENCODING INTO A PHASE MASK FOR MANUFACTURING A COMPLEX OPTICAL GRATING
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机译:设计适合于制造复杂光学光栅的相位掩模的索引轮廓的方法
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摘要
A method for designing an index profile suitable for encoding into a phase mask for manufacturing a complex optical grating is provided. The optical grating corresponds to a target index profile defining a target spectral response. A modified index profile is set equal to the target index profile and expressed as a function of an apodization and phase profiles. The modified index profile is iteratively further modified in order to provide the index profile suitable for encoding in the phase mask. This process creates side bands outside of a spectral region of interest, while maintaining the target spectral response within the spectral region of interest.
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