layer; and reduce the band discontinuity by changing the SEL material.
CONCLUSIONThe measured frequency bandwidth of InGaAs OEMs with SELs is less than that of corresponding detectors. M eff decreases as LO frequency increases and increases as IF frequency increases. As optical power decreases, M eff also decreases. We present a circuit model of the OEM that explains the experimental results.
ACKNOWLEDGMENTThe work in UF is supported by an ARO grant
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