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Bragg-scattering conversion at telecom wavelengths towards the photon counting regime
Katarzyna Krupa1, Alessandro Tonello, Victor V Kozlov
1Université de Limoges, XLIM, UMR CNRS 7252, Limoges, France. katarzyna.krupa@xlim.fr
Optics Express
|November 29, 2012
Summary
We studied Bragg-scattering four-wave mixing in nonlinear fiber. Polarization significantly impacts this process, aligning with classical models and influencing noise.
Area of Science:
- Nonlinear optics
- Quantum optics
- Photonics
Background:
- Four-wave mixing (FWM) is a key nonlinear optical process.
- Understanding FWM in highly nonlinear fibers is crucial for quantum information and communication.
- Polarization effects in FWM can influence signal generation and noise properties.
Purpose of the Study:
- To experimentally investigate Bragg-scattering four-wave mixing (BS-FWM) in a highly nonlinear fiber.
- To explore the polarization dependence of BS-FWM at telecom wavelengths.
- To analyze the impact of pump polarization on BS-FWM and associated noise.
Main Methods:
- Utilizing photon counters for precise measurements.
- Employing a continuous wave signal in the macroscopic and attenuated regime.
- Systematically varying pump polarization configurations.
Main Results:
- Experimental measurements of mean photon numbers per second were obtained.
- Observed BS-FWM exhibited a wavelength shift of 23 nm.
- Measurements closely matched theoretical and numerical predictions based on classical models.
Conclusions:
- The polarization state of the pump light critically influences BS-FWM.
- Classical models accurately describe the observed BS-FWM phenomena.
- Noise characteristics are dependent on pump polarization configurations, requiring careful consideration for applications.
