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>OPTIMALLY DESIGNED LAYER FORMATION FOR WAVELENGTH-SELECTIVE PHOTODETECTORS BASED ON GRATING-ASSISTED COUPLING
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OPTIMALLY DESIGNED LAYER FORMATION FOR WAVELENGTH-SELECTIVE PHOTODETECTORS BASED ON GRATING-ASSISTED COUPLING
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机译：OPTIMALLY DESIGNED LAYER FORMATION FOR WAVELENGTH-SELECTIVE PHOTODETECTORS BASED ON GRATING-ASSISTED COUPLING
Wavelength-selective photodetectors employing vertically grating-coupled optical filters are designed with a straightforward waveguide structure in order to improve wavelength selectivity. By arranging stacked layer formation for the absorption layer, we can greatly reduce the cross-talk absorption from unselected light down to -40 dB while keeping high selective absorption efficiency. Such photodetectors with a weighted coupling-assisted grating achieve an excellent bandpass filter-detector response, which shows a steep transition between stopband and passband. [References: 14]
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