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Pump noise cancellation in parametric wavelength converters
Vahid Ataie1, Evgeny Myslivets, Andereas O J Wiberg
1Department of Electrical and Computer Engineering, University of California San Diego, 9500 Gilman Dr, La Jolla, CA 92093, USA. vataie@ucsd.edu
Optics Express
|December 25, 2012
Summary
A new digital signal processing technique mitigates pump noise in parametric wavelength converters by using pump-idler correlations. This method improves receiver performance by 4 dB for 10 Gbps OOK signals.
Area of Science:
- Photonics
- Optical Communications
- Signal Processing
Background:
- Parametric wavelength converters are crucial for optical signal processing.
- Pump noise significantly degrades the performance of these converters.
- Existing mitigation techniques often have limitations.
Purpose of the Study:
- To introduce a novel digital signal processing (DSP) technique for mitigating pump noise effects.
- To leverage the inherent correlation between pump and idler waves in parametric processes.
- To experimentally validate the effectiveness of the proposed method.
Main Methods:
- The technique utilizes digital signal processing algorithms.
- It exploits the correlation property between the pump and idler signals, established during parametric interaction.
- The method is applied to a parametric wavelength conversion scenario.
Main Results:
- A 4 dB improvement in receiver performance was experimentally demonstrated.
- The technique was tested with a conventional 10 Gbps On-Off Keying (OOK) signal.
- Successful wavelength conversion over a 20 nm range was achieved.
Conclusions:
- The proposed DSP technique effectively mitigates pump noise in parametric wavelength converters.
- This approach offers a significant improvement in receiver performance.
- The method is practical for enhancing the reliability of optical communication systems.
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