Abstract
The noise characteristics of dual-pumped fiber optical parametric amplifiers (FOPAs) induced by gain and loss in photonic crystal fibers (PCFs) are analyzed. A special photonic crystal fiber is designed. Its noise figure (NF) changes with structure parameters, and it decreases as the hole diameter decreases. Three factors including input-signal power, signal wavelength and pump separation which impact on the final noise figure are discussed with the designed PCF.
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