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- Kylemark, Per, 1976, et al.
(författare)
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Noise statistics of fiber optical parametric amplifiers
- 2006
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Ingår i: OFC/NFOEC 2006. 2006 Optical Fiber Communication Conference and National Fiber Optic Engineers Conference. ; , s. OWT5-
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Konferensbidrag (refereegranskat)abstract
- We show both theoretically and experimentally that the probability density function of a signal amplified by parametric amplifiers with pump excess noise is non-Gaussian and asymmetric. This impacts the relationship between the noise figure and the bit-error rate
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- Bogris, Adonis, et al.
(författare)
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Noise Characteristics of Dual-Pump Fiber-Optic Parametric Amplifiers
- 2005
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Ingår i: Journal of Lightwave Technology. ; 23:9, s. 2788 – 2795-
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Tidskriftsartikel (refereegranskat)abstract
- The noise figure (NF) properties of an undepleted and lossless dual-pump fiber-optic parametric amplifier (FOPA) are theoretically and numerically investigated. The theoretical study takes into account the noise characteristics of the two pump waves that are considered to have parallel polarization states for gain maximization. It is shown that noisy pump waves degrade the amplifier's NF, especially when the amplifier is operating at high gain values and when the input signal is high. The theoretical observations are validated by Monte Carlo numerical simulations, and the agreement between them is excellent. Finally, a comparative study concerning the noise characteristics of dual-pump and single-pump FOPAs is performed.
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| 7. |
- Kylemark, Per, 1976, et al.
(författare)
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DM solitons in long-haul DWDM systems at 40 Gb/s with nonlinear interactions and PMD
- 2003
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Ingår i: IEEE Photonics Technology Letters. ; 15:10, s. 1372-4
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Tidskriftsartikel (refereegranskat)abstract
- The authors investigate for the first time how polarization mode dispersion and nonlinear interactions affect dense wavelength division multiplexing dispersion management-soliton long-haul transmission using Monte Carlo simulations. They also discuss how the system is affected by an increasing number of wavelength channels
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| 8. |
- Kylemark, Per, 1976, et al.
(författare)
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Gain and wavelength dependence of the noise-figure in fiber optical parametric amplification
- 2006
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Ingår i: IEEE Photonics Technology Letters. ; 18:11, s. 1255-7
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Tidskriftsartikel (refereegranskat)abstract
- We measure, for the first time, the wavelength resolved electrical noise figure (NF) of a fiber-optical parametric amplifier and find excellent agreement with theoretical predictions. We furthermore measure the NF in the exponential gain regime at high gain and quantify the gain dependence of the NF as well as its spectral dependence
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| 10. |
- Kylemark, Per, 1976, et al.
(författare)
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Impact of Phase Modulation and Filter Characteristics on Dual-Pumped Fiber-Optical Parametric Amplification
- 2006
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Ingår i: IEEE Photonics Technology Letters. - 1041-1135 .- 1941-0174. ; 18:2, s. 439 - 441
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Tidskriftsartikel (refereegranskat)abstract
- We have derived theory predicting the impact phase modulation has on dual-pumped parametric amplifiers which includes also the effect of pump power fluctuations. The theory shows that gain perturbations due to perturbations in the pump frequencies can be significantly reduced by operating the two pumps out of phase. Furthermore, filtering the phase-modulated pumps can introduce detrimental gain variations and we propose the use of flat-top filter characteristics in order to reduce the filter bandwidths around the pump without causing too much gain-variations on the amplified signal. We also investigate the effect of detuned optical filters.
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