Title :
High-Speed Miniaturized Photodiode and Parallel-Fed Traveling-Wave Photodetectors Based on InP
Author :
Beling, Andreas ; Bach, Heinz-Gunter ; Mekonnen, Gebre Giorgis ; Kunkel, Reinhard ; Schmidt, Detlef
Author_Institution :
Fraunhofer Inst. for Telecommun., Heinrich-Hertz-Inst., Berlin
Abstract :
A periodic parallel-fed traveling-wave photodetector (TWPD) with monolithically integrated power splitter is presented. The device exhibits an impedance match to the 50-Omega 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
Keywords :
III-V semiconductors; high-speed optical techniques; indium compounds; integrated optics; integrated optoelectronics; monolithic integrated circuits; optical waveguides; p-i-n photodiodes; photodetectors; 10 GHz; 145 GHz; 50 ohm; 85 GHz; InP; InP-based photodetectors; evanescent coupling; high-speed photodiode; impedance matching; low-capacitance photodiodes; miniaturized photodiode; monolithic integration; optical matching; p-i-n photodiodes; parallel-fed photodetectors; periodic photodetector; power splitter; traveling-wave photodetectors; velocity matching; waveguide-integrated photodiodes; Bandwidth; High speed optical techniques; Impedance; Indium phosphide; Optical devices; Optical surface waves; Optical waveguides; Photodetectors; Photodiodes; Power generation; InP; integrated opto-electronic circuit; p-i-n photodiode (PD); traveling-wave photodetector (TWPD);
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/JSTQE.2006.885331
