We consider an integrated electro-absorption modulator within a coupled-cavity VCSEL structure (EAM-VCSEL).We derive expressions for the modulation transfer function (MTF) of the EAM-VCSEL for small-signal modulation of either VCSEL injection current or EAM losses.For current modulation, the cut-off frequency remains limited by relaxation oscillati
Introduction.The power analysis of a chain transmission with a toothed chain and involute sprockets considers the centrifugal forces and the friction coefficients between the plate and the sprocket tooth.The work objectives are to determine all meshing forces, and to calculate the coupling coefficient of the gear chain with the involute sprocket in
Abstract Background Turkish Super League teams need more information about the external load.Considering the specific country and the coaches’ philosophies, the purpose of this study was to compare the external match load of a Turkish Super League team considering the different playing positions and in-season periods.Methodology A longitudinal st
Studies on neural development and neuronal regeneration after injury are mainly based on animal models.The establishment of pluripotent stem cell (PSC) technology, however, opened new perspectives for better understanding these processes in human models by providing unlimited cell source for hard-to-obtain human tissues.Here, we aimed at identifyin
In a male patient with cervical spinal cord injury, the urinary bladder may go into spasm when a urethral catheter is removed and a new Foley catheter is inserted.Before the balloon is inflated, the spastic bladder may push the Foley catheter out or the catheter may slip out of a small-capacity bladder.An inexperienced health professional may infla