DocumentCode :
854707
Title :
Tunable superlattice p-i-n photodetectors: characteristics, theory, and application
Author :
Larsson, Anders ; Andrekson, Peter A. ; Eng, Sverre T. ; Yariv, Amnon
Author_Institution :
Dept. of Electr. Meas., Chalmers Univ. of Technol., Goteborg, Sweden
Volume :
24
Issue :
5
fYear :
1988
fDate :
5/1/1988 12:00:00 AM
Firstpage :
787
Lastpage :
801
Abstract :
Extended measurements and theory on the recently developed monolithic wavelength demultiplexer consisting of voltage-tunable superlattice p-i-n photodetectors in a waveguide confirmation are discussed. It is shown that the device is able to demultiplex and detect two optical signals with a wavelength separation of 20 nm directly into different electrical channels at a data rate of 1 Gb/s and with a crosstalk attenuation varying between 20 and 28 dB, depending on the polarization. The minimum acceptable crosstalk attenuation at a data rate of 100 Mb/s is determined to be 10 dB. The feasibility of using the device as a polarization angle sensor for linearly polarized light is also demonstrated. A theory for the emission of photogenerated carriers out of the quantum wells is included, since this is potentially a speed limiting mechanism in these detectors. It is shown that a theory of thermally assisted tunneling by polar optical phonon interaction is able to predict emission times consistent with the observed temporal response
Keywords :
crosstalk; electromagnetic wave polarisation; frequency division multiplexing; multiplexing equipment; photodetectors; 100 Mbits/s; crosstalk attenuation; electrical channels; monolithic wavelength demultiplexer; optical signals; photogenerated carriers; polar optical phonon interaction; polarization; quantum wells; speed limiting mechanism; voltage-tunable superlattice p-i-n photodetectors; wavelength separation; Optical attenuators; Optical crosstalk; Optical polarization; Optical sensors; Optical superlattices; Optical waveguides; PIN photodiodes; Photodetectors; Voltage; Wavelength measurement;
fLanguage :
English
Journal_Title :
Quantum Electronics, IEEE Journal of
Publisher :
ieee
ISSN :
0018-9197
Type :
jour
DOI :
10.1109/3.195
Filename :
195
Link To Document :
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