Noise characteristics of fiber-based optical phase conjugators

被引:23
作者
Hedekvist, PO [1 ]
Andrekson, PA [1 ]
机构
[1] Chalmers Univ Technol, Dept Microelect, Photon Lab, SE-41296 Gothenburg, Sweden
基金
瑞典研究理事会;
关键词
noise measurement; nonlinear optics; optical fiber communication; optical mixing; optical noise; optical phase conjugation; optical parametric amplifiers;
D O I
10.1109/50.737424
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
This paper presents a theoretical and experimental analysis of the noise characteristics of a fiber based optical phase conjugator, The results are used to derive an expression for the noise figure (NF) of the device. The lowest measured NF is 18 dB, at -15 dB net conversion efficiency. This NF was limited by stimulated Brillouin scattering (SBS) and amplified spontaneous emission from an optical amplifier. Using the experimental parameters, the theoretical values agree well with the measurements, and predicts in our particular case a minimum NP of 10 dB at high conversion efficiencies. Furthermore, we investigate the influence of optical amplifiers before and after the conjugator, and, with all excess noise eliminated, we predict the quantum limit of 3 dB at efficiencies much greater than 100%.
引用
收藏
页码:74 / 79
页数:6
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