Performance optimization of waveguided germanium pin photodetector for optical communication applications

Author

Lim, Andy Eu-Jin ; Tsung-Yang Liow ; Ning Duan ; Kok Kiong Chen ; Tern, Roger Poh Cher ; Guo-Qiang Lo

Author_Institution

Inst. of Microelectron., A*STAR (Agency for Sci., Technol. & Res.), Singapore, Singapore

fYear

2012

fDate

13-16 Dec. 2012

Firstpage

1

Lastpage

3

Abstract

We investigated the impact of contact engineering for Germanium photodetectors performance optimization. Split contacts increased the PD responsivity by ~2 times when compared to rectangle or island block contacts. In addition, dark current and bandwidth was shown to be highly dependent on n++ doping region whereby there is a trade-off for both parameters. From this work, a route to high responsivity and high speed detector can be achieved.

Keywords

elemental semiconductors; germanium; integrated optics; integrated optoelectronics; optical communication equipment; optical sensors; optimisation; photodetectors; semiconductor doping; Ge; bandwidth; dark current; high-responsivity detector; high-speed detector; integrated optoelectronics; island block contact; n++ doping; optical communication application; performance optimization; rectangle block contact; split contact engineering; waveguided germanium p-i-n photodetectors; CMOS integrated circuits; Optical design; Optical sensors; Optical surface waves; Silicon;

fLanguage

English

Publisher

ieee

Conference_Titel

Photonics Global Conference (PGC), 2012

Conference_Location

Singapore

Print_ISBN

978-1-4673-2513-4

Type

conf

DOI

10.1109/PGC.2012.6458013

Filename

6458013