BER Performance of Optically Controlled MESFETs as Photodetectors

Tatsuya SHIMIZU  Hiroyuki OHTSUKA  Kojiro ARAKI  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E79-C   No.1   pp.46-51
Publication Date: 1996/01/25
Online ISSN: 
DOI: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Optomicrowave Techniques and Their Applications)
Category: Optomicrowave Devices
Keyword: 
optically controlled MESFET,  MMIC,  subcarrier optical transmission,  optic-to-electric responsivity,  

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Summary: 
This paper presents the performance of optically controlled MESFETs as photodetectors. The optical performance characteristics such as optic-to-electric responsivity, and BER for a π/4-QPSK signal are experimentally investigated. Measurements are performed by using MMIC compatible MESFETs. Experimental results are also evaluated in comparison with calculated PIN-PD limit. Optic-to-electric responsivity has high gain at lower received optical powers. It is shown experimentally that MESFET photodetectors improve the permissible optical power by 6 dB compared to the PIN-PD limit. Optically controlled MESFETs will provide a novel receivers for fiber-optic systems.