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Intermittent loss of light output and switching behavior in AlGaAs lasers modulated at 90 mbit/s

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3 Author(s)
Reynolds, C.L. ; AT&T Bell Laboratories, Reading, PA, USA ; Nygren, S. ; Gaw, C.A.

An intermittent loss of light output in AlGaAs lasers modulated at 90 Mbit/s is investigated and is attributed to a parallel intermittent shunt that switches between a resistive and conducting state. The shunt is associated with the presence of In contamination on the sidewalls of the laser chip. A calculation of the switching time based on conducting filaments through In1-xOxis consistent with the pulsed operation of the laser in testing. This shunt is avoided if bonding techniques that eliminate In from sides of the laser chips are employed.

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Lightwave Technology, Journal of  (Volume:4 ,  Issue: 3 )