| 摘要 |
A comb filter has a input polarization beam separation element, a birefringent filter assembly in optical communication with the input polarization beam separation element, and an output polarization beam separation and combination element assembly in optical communication with the birefringent filter assembly. The birefringent filter assembly comprises at least one birefringent filter stage, wherein each birefringent filter stage preferably comprises a polarization beam splitter and two reflectors.
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