1997
DOI: 10.1109/23.658957
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Proton-induced transients in optocouplers: in-flight anomalies, ground irradiation test, mitigation and implications

Abstract: We present data on recent optocoupler in-flight anomalies and the subsequent ground test irradiation performed. Discussions of the single event mechanisms involved, transient filtering analysis, and design implications are included. Proton-induced transients were observed on higher speed optocouplers with a unique dependence on the incidence particle angle. The results indicate that both direct ionization and nuclear reaction-related mechanisms are responsible for the single events observed.

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Cited by 41 publications
(24 citation statements)
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References 21 publications
(45 reference statements)
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“…In that paper, the angle dependence was determined to be due to direct ionization effects due to protons. A similar effect has been noted in optocouplers [63], [67], [69]. The cross section for these devices depends on the superposition of the cross section due to direct ionization effects with that for indirect ionization effects.…”
Section: F Sets In Optocouplers and Optical Data Linkssupporting
confidence: 63%
“…In that paper, the angle dependence was determined to be due to direct ionization effects due to protons. A similar effect has been noted in optocouplers [63], [67], [69]. The cross section for these devices depends on the superposition of the cross section due to direct ionization effects with that for indirect ionization effects.…”
Section: F Sets In Optocouplers and Optical Data Linkssupporting
confidence: 63%
“…Figure 4 The upper picture illustrates the long pathlengths possible when a proton is incident at 90". The lower diagram shows the dense ionization produced by the recoils generated in a nuclear reaction As discussed in [21], one would expect a significantly narrower angular distribution based on the very small acceptance angle about 90" required to traverse the length of the diode. We do not fully understand why the observed distribution is broader.…”
Section: A 840 Nmmentioning
confidence: 98%
“…Investigations by LaBel et al [1] and Reed et al [2] suggest that high-bandwidth optocouplers (GaAs LED and Si photodiode) are more susceptible to transient effects than low-bandwidth optocouplers. A review of single-event effects on a variety of spacebased devices was published recently with an excellent list of references [3].…”
Section: Gaas Vcsels and Photodiodesmentioning
confidence: 99%