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Research on Key Technologies of Multi-wavelength All-optical 3R Regeneration and All-optical Logic

Author: HanBingChen
Tutor: YuJinLong
School: Tianjin University
Course: Communication and Information System
Keywords: All-optical 3R regeneration All-optical clock extraction Fiber optical parametric amplification All-optical judgment All-optical logic Fabry - Perot filter
CLC: TN929.1
Type: PhD thesis
Year: 2010
Downloads: 148
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Abstract


In this thesis, the key technologies of theoretical and experimental studies of multi-wavelength all-optical 3R regeneration and all-optical logic. Multi-wavelength all-optical 3R regeneration technology is a research and development can be applied to multi-wavelength signals in WDM optical communication system 3R regeneration system, the main experimental multi-wavelength all-optical clock extraction and multi-wavelength judgment and other key technologies research;, the main use in all-optical logic semiconductor optical amplifier (SOA) reconfigurable all-optical basic logic, and on this basis to achieve a further combination of all-optical logic. Multi-wavelength all-optical clock extraction, FP filter core for all-optical clock extraction unit. Analysis of the working principle and the transfer function of the filter FP FP filter for clock extracted from the time domain and frequency domain performance analysis. By mathematical models and simulation software to study the impact of different parameters on the quality of the clock extraction, low finesse FP filter for the first time dual-wavelength 10Gbit / s NRZ clock extraction experiments to verify the FP filter for multi-wavelength the feasibility of the clock extraction; combined with high finesse FP filter wavelength conversion completed insensitive to wavelength 40Gbit / s signal optical clock extraction experiment. Experiments: FP filter can achieve multi-wavelength clock extraction. In multi-wavelength optical decision to HNLF-based parametric amplifier as the core of the device for all-optical decision. Fiber optical parametric amplification of the numerical model to study the characteristics of the pump light clock intensity modulated optical parametric amplification switch. On this basis, 10Gbit / s NRZ verified by experiment the judgment of the all-optical parametric amplifier as the ability to regenerate. The main system in the case to change the input signal wavelength, the signal transmission distance, signal-to-noise ratio, the deterioration of signal reproduction capability. First proposed in fiber optical parametric amplifiers, clock phase modulation pump light, and adjacent channel polarization orthogonal asynchronous network multi-wavelength optical decision experimental program. Requires multiple pump parametric amplification, the pump light intensity modulation requires a higher optical power to generate the optical switch window, in the judgment of asynchronous multi-wavelength light, respectively, to the light of the judgment, resulting in a plurality of channels adjacent the channel the crosstalk between four-wave mixing (FWM) and cross-phase modulation (XPM), and ultimately affect the regeneration of the multi-wavelength judgment. FWM a polarization orthogonal to the adjacent channel can be used to effectively suppress; using phase modulation clock, XPM adjacent channel will be suppressed. On this basis, we first proposed the clock pumped conditioning regimen based on the dispersion effect. Make use of the fiber dispersion causes a change of the relative phase between the two first-order sideband clock Pumps become quasi-continuous light, using post-processing clock pumped optical parametric amplification generates the decision threshold, the same can effectively suppress adjacent channel between XPM interference and verified by experiment the correctness of the program. The first time in all-optical logic, based on a single semiconductor optical amplifier (SOA), the basis of all-optical reconfigurable logic, and on this basis, based on two cascaded SOA all-optical combinational logic 10 Gbit / s full optical half adder and half-system experiment.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Wireless communications > Lightwave communications, laser communications
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