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High-speed miniaturized photodiode and parallel-fed traveling-wave photodetectors based on InP

 
: Beling, A.; Bach, H.-G.; Mekonnen, G.G.; Kunkel, R.; Schmidt, D.

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IEEE Journal of Selected Topics in Quantum Electronics 13 (2007), Nr.1, S.15-21
ISSN: 1077-260X
Englisch
Zeitschriftenaufsatz
Fraunhofer HHI ()
high-speed optical techniques; iii-v-semiconductors; indium compounds; integrated optics; integrated optoelectronics; monolithic integrated circuits; optical waveguides; p-i-n photodiodes; photodetectors

Abstract
A periodic parallel-fed traveling-wave photodetector (TWPD) with monolithically integrated power splitter is presented. The device exhibits an impedance match to the 5042 environment as well as a velocity match between the optical and electrical signals and shows a 3-dB bandwidth up to 85 GHz. The electrical output power reaches +10 dBm at 10 GHz. The device is based on evanescently coupled low-capacitance waveguide-integrated p-i-n photodiodes (PDs) with optimized optical matching layer which reveal a bandwidth of 145 GHz when employed as a stand-alone photodetector.

: http://publica.fraunhofer.de/dokumente/N-59452.html