研究目的
Investigating the generation of self-similar super Gaussian-like pulses from a passively mode-locked fiber laser using a long period fiber grating as a pulse-shaping element.
研究成果
The numerical results demonstrate the generation of stable super Gaussian pulses with a linear frequency chirp, a 1.5 ps pulse duration, and 2 nJ energy. These pulses are scalable and exhibit no bifurcation or instability as the gain is increased, making them potentially beneficial for long-haul dense wavelength division-multiplexed (DWDM) transmission links.
研究不足
The study is based on numerical simulations and does not include experimental validation. The nonlinear refractive index of the grating required for mode-locking is significantly higher than conventional optical fiber, which may pose practical challenges.
1：Experimental Design and Method Selection:
The study uses a numerical simulation based on the normalized complex Ginzburg-Landau equation and the nonlinear coupled mode equations of the grating.
2：Sample Selection and Data Sources:
The simulation starts with a low amplitude random light input corresponding to 2 mW of amplified spontaneous emission noise.
3：List of Experimental Equipment and Materials:
The laser cavity includes an Erbium doped fiber amplifier (EDFA), a long-period fiber grating (LPFG), an output coupler, a dispersive delay line (DDL), and a single mode fiber (SMF).
4：Experimental Procedures and Operational Workflow:
The simulation involves solving the fiber and grating equations with the symmetric split step Fourier method.
5：Data Analysis Methods:
The output pulse intensity profiles are analyzed and fitted to a super Gaussian pulse intensity model.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
