BER Performance of Optically Controlled MESFETs as Photodetectors

Hiroyuki OHTSUKA
Kojiro ARAKI

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

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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.