A new photodetector was designed with Metal Aperture Arrays filter in this paper. The shape and dimensions of the holes in an array do influence its transmission spectrum compare to the conventional photodetector. Hole array and annular aperture arrays were discussed.
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Y. Shang, Y. Huang, X. Duan, X. Ye, H. Huang, S. Cai, Q. Wang, and X. Ren, "Study on High Speed Photodetectors with Plasmonics Flilter," in Asia Communications and Photonics Conference and Exhibition, Technical Digest (CD) (Optical Society of America, 2009), paper FH3.
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