Optical pulse active replicator based on fiber-optic delay-time
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摘要: 根据高速光脉冲测量系统应用的需求,提出了使用循环式光纤光脉冲有源复制器实现模拟短脉冲信号的低噪音、低失真复制的一种方法.针对有源复制器中半导体光放大器(SOA)带来的放大自发辐射(ASE)光噪声与非线性失真,建立了SOA的计算模型,并对光脉冲在复制器中的循环传输性能进行了仿真和分析.仿真结果证明了使用外加直流光注入方法抑制波形失真的有源复制器方案是可行的,同时为合理选择注入直流光功率及环内损耗等参数,实现复制器的优化设计提供了依据.Abstract: Based on the fiber circulating delay line, an optical pulse active replicator using semiconductor optical amplifier (SOA) was proposed for high-fidelity replication of short analog optical pulses according to the requirements of a short optical pulses measurement system. Taking into account amplified spontaneous emission (ASE), a numerical model of SOA was developed in order to investigate a single-shot optical pulse recirculating propagation in the active replicator with a SOA. Simulation and analyses indicate that the optical pulse active replicator, which uses pumping light injection to restrain pulseshape distortion, is feasible. The number results provided optimal design bases for the optical pulse active replicator by choosing appropriately operating parameters, such as the power of pumping light injection and the loss within the replicator loop.
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Key words:
- light pulse /
- optical amplifiers /
- optical delay time /
- amplified spontaneous emission
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