Title :
Noise performance of HBT as photodetector in analog fiber-optic communication link
Author :
De Barros, L. E M, Jr. ; Paolella, A. ; Herczfeld, P.R. ; De Salles, A.A.A.
Author_Institution :
Center for Microwave & Lightwave Eng., Drexel Univ., Philadelphia, PA, USA
Abstract :
An analog fiber-optic communication link using a heterojunction bipolar transistor (HBT) as photodetector is analyzed regarding its noise performance Experimental results for signal-to-noise ratio and distortion are compared to other state of the art devices as well as commercial ones. The shot noise limited system using the HBT demonstrated S/N in excess of 50 dB and spurious-free dynamic range better than a commercial PIN. Furthermore, compared to other 3- and 2-terminal devices the HBT is potentially the best candidate for future OEIC technology. Experimental results for a new HBT structure, optimized for photonic applications, shows significant improvement in terms of gain and sensitivity
Keywords :
heterojunction bipolar transistors; optical fibre communication; optical receivers; photodetectors; phototransistors; semiconductor device noise; 50 dB; HBT photodetector; S/N ratio; SNR; analog fiber-optic communication link; distortion; gain; heterojunction bipolar transistor; noise performance; photonic applications; sensitivity; shot noise limited system; signal-to-noise ratio; spurious-free dynamic range; Distortion; Dynamic range; Heterojunction bipolar transistors; Optical fiber communication; Optical fiber devices; Optoelectronic devices; Performance analysis; Photodetectors; Signal analysis; Signal to noise ratio;
Conference_Titel :
Microwave and Optoelectronics Conference, 1997. Linking to the Next Century. Proceedings., 1997 SBMO/IEEE MTT-S International
Conference_Location :
Natal
Print_ISBN :
0-7803-4165-1
DOI :
10.1109/SBMOMO.1997.646872
