An Alternative approach using a Photonic Mixer Device (PMD) as an optical Detection for a High Speed Infrared Link
نویسندگان
چکیده
The detection of an optical signal using a photonic mixer device (PMD) as an alternative to the PIN photodiode for a high-speed infrared link is discussed. The PMD, at its linear range, is characterized as a correlator detector. The functionality of this PMD for a better Signal-to-Noise Ratio is described. With an improved mixing efficiency and photosensitive area, the PMD will replace the use of positive-intrinsicnegative (PIN) photodiode that needs a front-end wideband preamplifier (and hence, the different sources of preamplifier noise). Furthermore, the correlator nature of this detector presents a handsome opportunity in IR wireless link the possibility of Code-division-multiple-access (CDMA).
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