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

Volume

13

Issue

1

fYear

2007

Firstpage

15

Lastpage

21

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);

fLanguage

English

Journal_Title

Selected Topics in Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

1077-260X

Type

jour

DOI

10.1109/JSTQE.2006.885331

Filename

4084529