In the experiment, a 1450-m-long highly nonlinear dispersion flattened fiber (HNLF) was measured by using two different pump wavelengths, the measured nonlinear coefficient was γ=11.8 W -1·km -1, and the dispersion slope was S=0.0157 ps/(nm 2·km) with the error from the value given by the manufacturer below 5%.

Using second-order soliton compression effect in 4.28 km dispersion flattened fiber(DFF),the(5.8 ps) pulse with the repetition rate of 10 GHz generated from a regeneratively mode-locked fiber laser(RMLFL) was compressed into pulse with pulse-width of(1.74 ps.) The compression factor was 3.3.The experimental results agree well with the theoretical results.

2~6 order optical soliton phenomena are observed successfully in a dispersion flattened fiber by using our RMLFL as the soliton source, which is the first relevant report in China and one of the leading levels world-widely.

In the experiment, a 1450-m-long highly nonlinear dispersion flattened fiber (HNLF) was measured by using two different pump wavelengths, the measured nonlinear coefficient was γ=11.8 W -1·km -1, and the dispersion slope was S=0.0157 ps/(nm 2·km) with the error from the value given by the manufacturer below 5%.

Using second-order soliton compression effect in 4.28 km dispersion flattened fiber(DFF),the(5.8 ps) pulse with the repetition rate of 10 GHz generated from a regeneratively mode-locked fiber laser(RMLFL) was compressed into pulse with pulse-width of(1.74 ps.) The compression factor was 3.3.The experimental results agree well with the theoretical results.

2~6 order optical soliton phenomena are observed successfully in a dispersion flattened fiber by using our RMLFL as the soliton source, which is the first relevant report in China and one of the leading levels world-widely.

Besides the dispersion profile management, one of the key factors for stability is the maintenance of polarization in the dispersion-flattened fiber.

The femtosecond soliton propagation in the dispersion flattened fiber. Analytically and numerically is studied. The results show that Raman self frequency shift can make the dispersion flattened fiber have the same features as the dispersion decreasing fiber, and the shape and width of femtosecond soliton pulse can fundamentally remain unchanged over hundreds of dispersion length. It is possible that the femtosecond optical soliton communication links...

The femtosecond soliton propagation in the dispersion flattened fiber. Analytically and numerically is studied. The results show that Raman self frequency shift can make the dispersion flattened fiber have the same features as the dispersion decreasing fiber, and the shape and width of femtosecond soliton pulse can fundamentally remain unchanged over hundreds of dispersion length. It is possible that the femtosecond optical soliton communication links are made by use of dispersion flattened fiber and the lumped phase sensitive amplifiers.

In this article,we use Lorentz approximation to investigate the gain properties of multi pumping broadband Raman amplifier,and present some schemes for flattening the gain.All the results show that the flatness of the gain spectrum is closely related to the pumping frequency grid.Researching the gain properties of Raman amplifiers of such ITU T fibers as G.652,G.653,G.655 and large effective area non zero dispersion flattening fiber(LEA NZ DFF),we got that the Raman gain is associated with the...

In this article,we use Lorentz approximation to investigate the gain properties of multi pumping broadband Raman amplifier,and present some schemes for flattening the gain.All the results show that the flatness of the gain spectrum is closely related to the pumping frequency grid.Researching the gain properties of Raman amplifiers of such ITU T fibers as G.652,G.653,G.655 and large effective area non zero dispersion flattening fiber(LEA NZ DFF),we got that the Raman gain is associated with the fiber type and its transmission characteristics,especially decreasing with the effective core area increasing.

本文采用 L orentz线型近似 ,研究了多波长泵浦宽带 Raman放大器的增益特性 ,并提出了宽带增益平坦的多波长泵浦方案。研究结果表明 ,增益平坦程度与泵浦波的频率间隔密切相关。对 ITU - T的G.6 5 2、G.6 5 3及 G.6 5 5光纤和新型的大有效面积非零色散平坦光纤的 Raman放大增益特性研究表明 ,Raman增益与光纤的种类和光纤传输特性有关 ,特别是随光纤有效纤芯面积的增大而明显减小

The Stokes spectrum in the Stimulated Raman Scattering(SRS) is very complicate.In this article,we use Gaussian approxi mation to investigate the gain properties of multi-pumping broadband Raman amplifier,and present some schemes for flattening the gain.All the results show that the flatness of the gain spectrum is closely related to the pumping frequency grid.Researching the gain properties of Raman amplifiers of such ITU-T fibers as G.652.G.653.G.655 and large effective area non-zero dispersion flattening...

The Stokes spectrum in the Stimulated Raman Scattering(SRS) is very complicate.In this article,we use Gaussian approxi mation to investigate the gain properties of multi-pumping broadband Raman amplifier,and present some schemes for flattening the gain.All the results show that the flatness of the gain spectrum is closely related to the pumping frequency grid.Researching the gain properties of Raman amplifiers of such ITU-T fibers as G.652.G.653.G.655 and large effective area non-zero dispersion flattening fiber,we got that the Raman gain is associated with the fiber type and its transmission characteristics,especially decreasing with the effective core area increasing.