Journal
APPLIED PHYSICS B-LASERS AND OPTICS
Volume 88, Issue 2, Pages 281-284Publisher
SPRINGER
DOI: 10.1007/s00340-007-2726-3
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A combinatorial deposition technique is developed to fabricate integrated narrow bandpass filters (NBPFs) on a single substrate. It is highly efficient for the fabrication of integrated filter arrays in optical regions. An array integrated with 128 NBPFs has been fabricated by using the technique in a nine-step deposition process. The pass bands of the filters distribute almost linearly in the range of 722.0 similar to 880.0 nm. The relative bandwidth of the pass bands is smaller than 0.44%. Such a NBPF array can be utilized as a wavelength division component in many optical applications. It is very powerful for the miniaturization of relevant apparatuses.
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