色散管理孤子

分析了色散管理孤子（DMS）的基本原理和特性，并通过数值计算对DMS的传输进行了模拟，证实了DMS具有诸多比普通孤子更为优越的性能。同时也对密集色散管理孤子（DDMS）做了介绍，并在数值计算的基础上将其与类线性和普通DMS传输作了比较，发现DDMS在高速窄脉冲情况下有更好的传输特性。     

色散位移光纤中孤子色散管理传输特性研究

从描述光纤中孤子脉冲演化的非线性薛定谔(NLS)方程出发,得到了色散位移光纤中孤子色散管理传输的基本方程.利用对称分步傅里叶方法对方程进行数值求解,研究了色散管理孤子(DMS)在色散位移光纤中的演化特性.结果表明,孤子在周期性搭配具有相反色散性质的色散位移光纤中传输,无论是进行密集色散管理还是经典色散管理,都可以有效地抑制孤子间的相互作用,使得孤子的传输演化特性得到改善,从而提高信息传输的比特率.     

色散管理孤子

介绍了色散管理孤子技术的基本原理、特性，以及应用这一新技术在现有线性光纤网实现超高速、大容量孤子通信的诱人前景。简要综述了当前的研究现状。     

色散管理孤子的传输特性

论述了色散管理孤子的传输原理,并利用数值方法模拟了色散管理孤子在不同的传输模式中的传输,研究了色散管理孤子特性及其应用。研究结果表明,色散管理孤子具有很明显的周期性,尤其采用平均路径色散为0的模型传输性能更佳。     

色散管理孤子的研究

对常规色散管理孤子系统(DMS)、密集色散管理孤子系统(DDMS)、色散渐减光纤(DDF)孤子系统进行了数值模拟研究和分析．对三种系统的特点进行了比较分析。并对它们的适用范围给出了一个系统的论证．     

高速光通信中的色散管理孤子

分析了高速光通信系统中色散管理孤子的发展、演变、以及相对于传统孤子的优势,并结合系统仿真揭示了色散管理孤子对于未来通信的重要意义。     

色散管理孤子的研究

对常规色散管理孤子系统(DMS)、密集色散管理孤子系统(DDMS)、色散渐减光纤(DDF)孤子系统进行了数值模拟研究和分析。对三种系统的特点进行了比较分析,并对它们的适用范围给出了一个系统的论证.     

色散缓变光纤中皮秒孤子传输动力学研究

用变分原理推导出了色散缓变光纤中皮秒光孤子传输的动力学方程，理论 色散指数缓变光纤中光孤子的传输特性，理论分析与数值模拟一致。     

线性色散缓变光纤中孤子传输特性

运用行波解法求解了色散缓变光纤中的非线性薛定谔方程 ,可以得到近似形式的解析解 ,并得到了孤子振幅、中心位置、相位的演化方程。在此基础上研究了线性色散对孤子振幅、中心位置、相位等传输特性的影响。     

色散管理孤子的研究

在详细介绍了色散管理孤子的相关概念之后，从描述色散管理光孤子的非线性薛定谔方程出发，利用对称分步傅里叶方法，对色散管理孤子的传输演化特性进行了数值研究。结果表明，存在群速色散时，孤子间的相互作用比无群速色散时更加严重，并且孤子的振幅也发生了变化，影响了通信系统的质量和容量。     

Dynamics of solitons in filtered dispersion-managed systems

We present measurements of the temporal evolution of soliton propagation in a dispersion managed fiber transmission line containing one optical bandpass filter in each map period. The pulses expand and compress in time due to the local dispersion with two minima per map cycle, one in the middle of the anomalous and the other in the middle of the normal section of the fiber map. The pulses are nearly transform limited at the minima with Gaussian-like spectra. A new type of soliton behavior is indicated by the fact that the dynamics, measured bit-error rate (BER), excess gain, and pulse stability do not vary with path-averaged dispersion from 0.02 to 0.08 ps/nm/km     

Output characteristics of optical solitons in a passively mode-locked Yb-doped fiber laser

In this paper, we studied the output characteristics of optical soliton in a passively mode-locked ytterbium (Yb)-doped fiber laser by numerical simulation. The structure of the passively mode-locked Yb-doped fiber laser was studied by modeling and analysis. The influence of the inter-cavity average group velocity dispersion on pulse width, pulse peak power and single pulse energy of optical soliton and self-similar pulse was investigated. Simulation results were very instructive for the practical application of the passiavely mode-locked Yb-doped fiber lasers.     

色散管理光纤激光器中类噪声脉冲的实验研究

Based on an erbium.doped dispersion-managed fiber laser,the characteristics of noise-like pulses under different net cavity group velocity dispersions (GVDs) are experimentally investigated.Results show that the spec-tral bandwidth of noise-like pulse will increase as the net cavity GVD increases and attains maximum when the GVD is slightly positive.The effect of Raman scattering is enhanced due to the temporal width attains minimum.When the net cavity GVD increases continually and further into the positive region, the spectral width begins to decrease and the effect of Raman scattering is suppressed due to the positive dispersion.Our experimental results are in good agreement with the previous prediction of numerical simulation.     

Second-order moment analysis of dispersion-managed solitons

This paper shows how a second-order moment analysis can be used to derive explicit approximate expressions for the evolution of the root-mean-square (rms) width and chirp parameters of a dispersion-managed soliton within one period of the dispersion map. The energy enhancement factor can also be estimated with a good accuracy     

Linear stability analysis of dispersion-managed solitons controlledby filters

We present a linear stability analysis of dispersion-managed (DM) solitons controlled by inline narrow-band filters. We show that the filters can destabilize the pulse if they are unsuitedly located in the dispersion map, which is contrary to the case of standard solitons in fibers with constant dispersion. We also show that for such an instability to take place the pulse energy and the dispersion-map strength should be significantly larger than those usually required for practical long-distance transmission. The filter-induced instability of DM solitons will be an issue in the operation of stretched-pulse mode-locked fiber lasers     

Switching-wavelength pulse source constructed from a dispersion-managed SOA fiber ring laser

A new approach to generate switching-wavelength picosecond pulses is developed based on a dispersion-managed semiconductor optical amplifier (SOA) fiber laser cavity. Gain modulation on a 1.55-/spl mu/m SOA is used together with subharmonic gating of pulses in the cavity. An 8-GHz, eight-wavelength output is obtained with a constant spacing of 0.91 nm between neighboring wavelengths. The wavelength channels have nearly identical peak powers. The total amplitude and time jitter of the output is measured to be smaller than 0.4 ps. The spacing and the number of output wavelengths can be easily tuned by changing the operating frequency and the subharmonic ratio without modifying the optical cavity.     

Robustness of dispersion-managed solitons to the polarization-modedispersion in optical fibers

The robustness of dispersion-managed (DM) solitons to polarization-mode dispersion (PMD) is studied by numerical simulations. It is shown clearly that DM solitons are robust to PMD, and generally, DM solitons are more robust to PMD than conventional solitons. The robustness of DM solitons depends on both map strength and average group velocity dispersion (GVD). We show that the larger the map strength and average GVD, the more robust are the DM solitons to PMD, which is due to the increased power of DM solitons with the large map strength and average GVD     

Stability analysis of dispersion-managed solitons controlled bysynchronous amplitude modulators

The stability of time-domain transmission control of dispersion-managed (DM) solitons is studied. We show by a linear stability analysis that appropriate positioning of synchronous amplitude modulators in the dispersion map can stabilize the propagation of DM solitons without simultaneous use of bandpass filters when the pulse energy is sufficiently large. It is also shown that the frequency chirp of the pulse at the position of the modulator critically affects the stability     

Optimization of dispersion-managed optical fiber lines

We present various approaches to the optimization of optical fiber lines and discuss the ranges of validity of such methods. An effective scheme for upgrading of existing transmission lines using dispersion-management with optimization of the pre- and post-compensating fiber is examined. The theory and numerical methods are illustrated in application to the upgrade of a specific installed Deutsche Telekom fiber line     

48 fs,108 MHz色散管理孤子掺Er3+光纤激光器

提出了一种基于商售光纤构建的适用于精密光谱光频梳应用的100 MHz重复频率色散管理孤子光纤激光器的设计方案.通过采用低负色散光纤调控重复频率、高正色散光纤增大腔内脉冲呼吸比,构建了重复频率为108 MHz、中心波长为1550 nm的基于正色散掺铒光纤的色散管理孤子光纤激光器,该激光器腔内净色散为-0.0023 ps2,直接输出脉冲宽度为70 fs,经光纤压缩后脉冲宽度为48 fs,且脉冲中心波长处在1550 nm.