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BER Performance of Optically Controlled MESFETs as Photodetectors
IEICE TRANSACTIONS on Electronics
Publication Date: 1996/01/25
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.