Signal-to-noise performance of a fiber optic subcarrier link using an HBT optoelectronic up-converter

Author

Suematsu, E. ; Imai, N.

Author_Institution

ATR Opt. & Radio Commun. Res. Labs., Kyoto, Japan

fYear

1994

fDate

23-27 May 1994

Firstpage

1501

Abstract

The signal-to-noise performance of a fiber optic microwave subcarrier link using an HBT as an optoelectronic up-converter in the millimeter-wave band has been experimentally investigated for the first time. This paper shows that the HBT not only has a high photodetection ability in direct photodetection but also has a high conversion ratio between a microwave subcarrier of an optical signal and a millimeter-wave carrier. The link signal-to-noise ratio of an HBT up-converter at IF=3.2 GHz/RF=30 GHz is 11 dB and 21 dB higher than that of a HBT direct photodetector and a PIN photodetector at 30 GHz, respectively. The HBT optoelectronic up-converter has the function of a photodetector, an IF amplifier and a mixer.<>

Keywords

frequency convertors; heterojunction bipolar transistors; interference (signal); mixers (circuits); optical links; photodetectors; 3.2 GHz; 30 GHz; HBT optoelectronic up-converter; IF amplifier; direct photodetection; fiber optic subcarrier link; microwave subcarrier link; millimeter-wave band; mixer; signal-to-noise performance; Heterojunction bipolar transistors; Optical amplifiers; Optical fibers; Photodetectors; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 1994., IEEE MTT-S International

Conference_Location

San Diego, CA, USA

ISSN

0149-645X

Print_ISBN

0-7803-1778-5

Type

conf

DOI

10.1109/MWSYM.1994.335290

Filename

335290