High power, high frequency traveling wave heterojunction phototransistors with integrated polyimide waveguide

Author

Scott, D.C. ; Prakash, D.P. ; Erlig, H. ; Bhattacharya, Debajit ; Ali, Mohamed ; Fetterman, H.R.

Author_Institution

Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA

Volume

3

fYear

1998

fDate

7-12 June 1998

Firstpage

1237

Abstract

A high power, high speed phototransistor has been demonstrated using a traveling wave structure with an integrated polyimide optical waveguide. In our configuration, optical power transfer is distributed along the length of the device via leaky mode coupling of light from the polyimide waveguide to the active region of the phototransistor. The traveling wave electrode design allows for an electrically long structure while maintaining high bandwidths. Due to the increased absorption volume, the optical power handling capabilities of the TW-HPT are improved over that of conventional lumped element HPT detectors. The experimental results show no compression of the fundamental at 60 GHz up to 50 mA of DC photocurrent.

Keywords

integrated optoelectronics; millimetre wave power transistors; optical polymers; optical receivers; optical waveguides; photodetectors; phototransistors; 50 mA; 60 GHz; HF heterojunction phototransistors; electrically long structure; high bandwidth; high power phototransistor; high speed phototransistor; integrated polyimide waveguide; leaky mode coupling; microwave fiber optic link; optical power handling capabilities; optical power transfer; polyimide optical waveguide; traveling wave electrode design; traveling wave structure; Electrodes; Frequency; Heterojunctions; High speed optical techniques; Integrated optics; Optical coupling; Optical devices; Optical waveguides; Phototransistors; Polyimides;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 1998 IEEE MTT-S International

Conference_Location

Baltimore, MD, USA

ISSN

0149-645X

Print_ISBN

0-7803-4471-5

Type

conf

DOI

10.1109/MWSYM.1998.700598

Filename

700598