研究目的
Investigating the generation of reverse sawtooth pulses from gaussian pulses using a linearly chirped fiber Bragg grating.
研究成果
The study demonstrates a reliable and compact technique for generating asymmetric waveforms from gaussian pulses using FBGs. The asymmetry of the reflected pulse increases with the order of the input gaussian pulse, indicating potential for improved jitter tolerance in optical time division multiplexing systems.
研究不足
The study is limited to simulations and does not include experimental validation. The technique's applicability is constrained by the FBG's design parameters and the input pulse characteristics.
1：Experimental Design and Method Selection:
The study employs a linearly chirped fiber Bragg grating (LC-FBG) for converting gaussian optical pulses into reverse sawtooth pulses. The methodology involves adjusting grating parameters like period, length, and modulation index to shape the reflected pulse.
2：Sample Selection and Data Sources:
Gaussian optical pulses of orders 2, 4, and 8 are used as input, with specific parameters such as wavelength (1550 nm) and bandwidth (4.5 nm).
3：5 nm).
List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: The setup includes a mode-locked laser and LC-FBG modules. The FBG is designed with Germanium doped fibre core exposed to ultra-violet light.
4：Experimental Procedures and Operational Workflow:
Gaussian pulses are generated and launched into the LC-FBG. The reflected pulses are analyzed for their temporal and spectral profiles.
5：Data Analysis Methods:
The asymmetry of the reflected pulses is analyzed based on the order of the input gaussian pulse.
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