Noise in phase-(in)sensitive dual-core fiber parametric amplification.
Optics Express
|February 25, 2018
Summary
Noise performance of a coupled dual-core fiber optical parametric amplifier was analyzed. The phase-sensitive configuration achieved a minimum noise figure of -6 dB, offering a flat spectrum and improved signal amplification.
Area of Science:
- Optics and Photonics
- Nonlinear Optics
- Fiber Optics
Background:
- Coupled dual-core fiber optical parametric amplifiers offer wide-bandwidth gain.
- Phase-sensitive gain can be achieved without generating amplifier input idlers.
Purpose of the Study:
- To analyze the noise properties of coupled dual-core fiber optical parametric amplifiers.
- To investigate noise figures in both phase-insensitive and phase-sensitive configurations.
- To study pump transfer noise and noise figure variations with amplifier length.
Main Methods:
- Theoretical analysis of noise characteristics.
- Simulation of phase-insensitive and phase-sensitive amplification.
- Investigation of noise figure dependence on amplifier length and configuration.
Main Results:
- A 3 dB noise figure was achieved in the phase-insensitive case.
- A minimum noise figure of -6 dB was obtained in the phase-sensitive configuration.
- An alternative phase-sensitive configuration yielded a 3 dB flat spectrum combined noise figure.
Conclusions:
- Coupled dual-core fiber optical parametric amplifiers exhibit favorable noise properties.
- Phase-sensitive configurations offer significant noise figure improvements.
- Understanding noise characteristics is crucial for optimizing amplifier performance.
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