Four-wave Mixing In Semiconductor Amplifiers Research Articles

Efficient, Widely-Tunable Wavelength Conversion for Packets With In-Band Labels

We propose and demonstrate a tunable wavelength converter for optical packets with a 40 Gb/s non-return-to-zero differential phase shift keying payload and an in-band 1.25-Gb/s on-off keying label. To achieve wide wavelength coverage and integrability, we use a dual pump scheme exploiting four-wave mixing in semiconductor amplifiers. For flexibility and scalability, in-band labels are used. For phase stability, we use a quantum-dash mode-locked laser as a multi-wavelength source for the dual pumps with tunability provided by the output filter. The bit error rate (BER) performance is evaluated for both payload and label after wavelength conversion. We report error free conversion for both the converted payload and label over a range of 12 nm with power penalty.

Long Distance Optical Communication Systems Adopting Wavelength Conversion by Four-Wave Mixing in Semiconductor Amplifiers

Article Long Distance Optical Communication Systems Adopting Wavelength Conversion by Four-Wave Mixing in Semiconductor Amplifiers was published on June 1, 1997 in the journal Journal of Optical Communications (volume 18, issue 3).

Experimental characterization of semiconductor optical amplifiers used as frequency converters by means of four-wave mixing

Abstract In this article we report extended measurements of four-wave mixing in bulk-semiconductor amplifiers using continuous wave sources. We demonstrate that four-wave mixing in semiconductor amplifiers permits realizing in the practice frequency conversion in the spectral range of utility for optical telecommunications. Efficiency larger than 1 have been demonstrated up to 1 THz with a low level of background noise. In addition, this technique has allowed us to investigate the carrier dynamics down to an equivalent time resolution of the order of few tens of femtoseconds.

Frequency converters based on FWM in traveling-wave optical amplifiers: Theoretical aspects

Abstract We summarize the results of a theoretical model, developed to investigate the performance of a frequency converter based on four-wave mixing in a bulk traveling wave amplifier. The theory predicts very high values of conversion efficiency and signal-to-background ratio in the bandwidth of the converted signal. These results, whose experimental confirmation is reported elsewhere, increase the potential of using four-wave mixing in semiconductor amplifiers in actual optical systems.

Distortions compensation in linear optical links adopting wavelength converters based on FWM in semiconductor amplifiers

Abstract Wavelength conversion by four-wave mixing in high-speed, long-distance optical links compensates for fiber dispersion and source chirping. Wavelength converters based on four-wave mixing in semiconductor amplifiers could be key components in wavelength-switched networks. The link performances are estimated by simulation using a physical model of all devices; the bit error rate is evaluated by a semianalytical model.

Four-wave mixing in traveling-wave semiconductor amplifiers

The traveling-wave equations of four-wave mixing in semiconductor amplifiers are solved analytically including saturation of the amplifier. Excellent agreement is obtained with numerical solutions of the traveling-wave equations. The analytical model is used to analyze a highly nondegenerate four-wave mixing experiment in a bulk semiconductor amplifier. >

Analytical theory of four-wave mixing in semiconductor amplifiers

The analytical theory of four-wave mixing in semiconductor amplifiers is developed. The theory applies to arbitrary saturation conditions. If carrier depletion and spectral hole burning are considered, the conversion efficiency is the maximum at a total input power that produces a gain compression of e(-2) (approximately -9 dB), independently of the physical parameters of the amplifier.