Larsson, Anders and Andrekson, Peter A. and Eng, Sverre T. and Yariv, Amnon (1988) Tunable superlattice p-i-n photodetectors: characteristics, theory, and application. IEEE Journal of Quantum Electronics, 24 (5). pp. 787-801. ISSN 0018-9197. http://resolver.caltech.edu/CaltechAUTHORS:20120604-133653246
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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.
|Additional Information:||© 1988 IEEE. Manuscript received August 18, 1987. This work was supported by the National Swedish Board for Technical Development and by the Office of Naval Research, the ITT Corporation, and NASA/JPL. The authors would like to thank M. Jonsson for helpful discussions.|
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|Deposited By:||Tony Diaz|
|Deposited On:||05 Jun 2012 23:40|
|Last Modified:||26 Dec 2012 15:18|
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