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In this paper, we present the experimental realization of all-optical inverted and non-inverted wavelength conversion based on cross polarization modulation (XPolM) in a semiconductor optical amplifier. The novel and attractive feature in our work is that both all-optical functions can be obtained without changing the set-up configuration. Switching between(More)
We experimentally demonstrate the influence of a high power continuous wave (CW) injection, as a holding beam (HB), into an SOA around the gain transparency wavelength on the bit error rate (BER) of a signal modulated at 2.5 Gb/s traveling through the amplifier. We show that the injection of an HB power of 19 dBm at 1480 nm inside an SOA, in three regimes(More)
We experimentally and theoretically demonstrate the SOA gain recovery time dependency on the probe signal wavelength and its optical power, in absence and in presence of the injection of a continuous wave (CW) high power assist light in the device. Experimental and numerical results show that for low probe powers and long wavelengths the gain recovery is(More)
This work describes the theoretical and experimental results to analyze the influence of the assist light injection and to evaluate the enhancement of the SOA saturation output power and gain recovery time in both injection ways. The assist light can be injected inside the SOA cavity in co- or in counter-propagative direction with respect to the optical(More)
This paper develops a formal and general model for an induction motor with periodic variations of the rotor slot; this induction motor with induced saliencies is commonly used in sensorless control applications. In order to obtain the model, first the analysis of the stator and rotor inductances modified by induced saliencies is carried out; second, the(More)
We investigate by numerical calculations the evolution of the gain transparency wavelength lambda<sub>tr</sub> of a semiconductor optical amplifier (SOA) over a wide range of the optical signal power, wavelength, and the SOA bias current. We show that the most critical parameter to control is the input signal power. Our results demonstrated that for a low(More)
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