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A Study on Low-Current-Operation of 850nm Oxide VCSELs Using a Large-Signal Circuit Model  

Jang, Min-Woo (Memory Division, Samsung Electronics)
Kim, Sang-Bae (School of Electrical and Computer Engineering, Ajou University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SD / v.43, no.10, 2006 , pp. 10-21 More about this Journal
Abstract
We have studied the characteristics of oxide VCSELS when their off-current and on-current are kept small in order to find out the possibility of low current operation. A large signal equivalent circuit model has been used. By comparing measured data and simulation results, the parameters of the large signal models are obtained including the capacitances. Using the large signal model, we have investigated the effects of capacitance and on/off currents upon the turn-on/turn-off characteristics and eye diagram. According to the experiment and simulation, the depletion capacitance, which has been neglected, is found to have significant influence on the him-on delay and eye-diagram. Therefore, for high speed and low current operation, the reduction of the depletion capacitance is essential.
Keywords
turn-on delay; eye-diagram;
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Times Cited By KSCI : 2  (Citation Analysis)
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