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VACUUM ›› 2019, Vol. 56 ›› Issue (5): 74-76.doi: 10.13385/j.cnki.vacuum.2019.05.15

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Design of Three-Channel Filter Based on F-P Filter

ZHU Yuan-qiang   

  1. Foctek Photonics, Inc. Fuzhou 350100, China
  • Received:2018-10-15 Published:2019-10-15

Abstract: Based on the Fabry-Perot filter structure, a preliminary three-channel filter structure is designed theoretically by optimizing the interference of the space layer. In order to further reduce the channel half-bandwidth and improve the filtering property, the reflectivity of reflective film can be improved appropriately. Finally, a three-channel filter with half-bandwidth of less than 5 nm and peak transmittance of more than 95% was designed.

Key words: three-channel filter, Fabry-Perot filter, spacer layer, interference order

CLC Number: 

  • TN305.8
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