Abstract
In this paper, a metal–semiconductor–metal (MSM) based
photodetector for multiple wavelength discrimination is fully introduced and
analyzed. Its spectral response is programmable electrically through a set
of low-voltage binary patterns that can be generated from CMOS circuits.
Consequently, the wavelength reconfiguration time of the detector is set
primarily by the electronics switching time, which is on the order of
nanoseconds. Additionally, the spectral response of the detector can be
arbitrarily shaped for any specific system need based on algorithms we
introduce here. The nanosecond wavelength reconfigurability feature of the
detector offers flexibility for designing high-efficiency wavelength
reconfigurable optical networks.
© 2009 IEEE
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