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We present a FWM-based dual channel wavelength converter in an SOA with very small variations in conversion efficiency and a minor polarization related power penalty of 0.9 dB between best and worst case of polarization states.
The observation of the four-wave mixing in semiconductor due to the excitation of the cross-polarized pump-probe is explained by the dephasing of the coherence terms, instead of the coherent effect of exciton.
We examine the generation of terahertz by optical rectification of fundamental infrared beam with its second harmonic in ionized air. From polarization measurements we identify an important, yet so far unreported cross term chixyxy(3).
We have measured electromagnetically induced transparency (EIT) and four wave mixing (FWM) signals in a three level atomic system to enhance nonlinearity for a weak field due to quantum coherence with standing fields. We were able to observe quite different EIT signals according to a traveling or standing coupling field. (1) We obtained EIT and FWM signals depending on detunings, polarization, (2)...
Summary form only given. In this paper, vector phase conjugation (VPC) is demonstrated both in a saturable absorber (Cr/sup 4+/:YAG) and a gain material (Nd:YAG) for the first time, to our knowledge. We present resuits that show that four wave mixing (FWM) in both of these materials can compensate for large polarization aberrations.
Summary form only given. Wavelength conversion by four-wave mixing (FWM) in semiconductor optical amplifiers (SOAs) has several advantages, including transparency to the modulation format and bit rate. An important feature of the intensity and polarization of the FWM wavelength-converted signal is their dependence on the polarizations of the input signal and pump waves. In this paper, we discuss the...
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