It is a challenge to implement loss-of-signal (LOS) circuit with wide threshold voltage range that insensitive temperature. This paper presents new wide-range threshold-programmable LOS detector full temperature compensation for application in 25Gb/s high-speed optical communication receivers. The programmable of the achieved by adjusting peak and gain variable amplifier (VGA). detection accura...

Evaporated ZnS:Mn alternating-current thin-film electroluminescent ~ACTFEL! devices are assessed via frequencyand temperature-dependent transferred charge analysis. The frequency-dependent trends involve the threshold voltage and the slope of the transferred charge immediately above threshold, both of which increase with increasing frequency. At ;15–20 V above threshold, the slope of the transf...

A simple semi-phenomenological model, which accurately predicts the dependence of thresholdcurrent for temperature of Resonant-phonon three well quantum cascade laser based on verticaltransitions is offered. We found that, the longitude optical phonon scattering of thermally excitedelectrons is the most important limiting factor for thermal performance of high frequency THz QCLs.In low frequenc...

Organic semiconductors possessing tightly bound Frenkel excitons are known to be attractive candidates for demonstrating polariton lasing at room temperature. As can occur without inversion, it is a potential route very low threshold coherent light sources. However, so far, the thresholds of organic lasers have generally been much higher than those photon lasers. Here this problem has addressed...