发明名称 |
A VARIABLE OPTICAL FILTER AND A WAVELENGTH-SELECTIVE SENSOR BASED THEREON |
摘要 |
A variable optical filter is disclosed including a bandpass filter and a blocking filter. The bandpass filter includes a stack of alternating first and second layers, and the blocking filter includes a stack of alternating third and fourth layers. The first, second and fourth materials each comprise different materials, so that a refractive index of the first material is smaller than a refractive index of the second material, which is smaller than a refractive index of the fourth material; while an absorption coefficient of the second material is smaller than an absorption coefficient of the fourth material. The materials can be selected to ensure high index contrast in the blocking filter and low optical losses in the bandpass filter. The first to fourth layers can be deposited directly on a photodetector array. |
申请公布号 |
HK1215494(A1) |
申请公布日期 |
2016.08.26 |
申请号 |
HK20160103346 |
申请日期 |
2016.03.22 |
申请人 |
JDS UNIPHASE CORPORATION |
发明人 |
HENDRIX, Karen, Denise;HULSE, Charles, A. A.;BRADLEY, Richard, A. A.;KUNA, Jeffrey, James |
分类号 |
H01L |
主分类号 |
H01L |
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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