新型光纤声光可调滤波器的宽带信号放大器设计

Design of a new type fiber acousto-optic tunable filter wideband signal amplifier

为了改进现有宽带信号放大器的设计并优化器件的性能,采用了基于新型声致光纤光栅光路的设计方法,通过对放大器的理论的计算和调试,针对产生声致长周期光纤光栅所需的MHz量级声波信号需要,设计了一个新型射频放大电路。进行了理论分析和实验验证,取得了声致光纤光栅透射光谱中谐振峰的透射深度检验放大电路的性能数据,结果表示:该放大器能够满足产生声致长周期光纤光栅的器件要求,这一结果对大幅改善和优化宽带信号放大器的性能是有帮助的。

In order to improve the design of existing broadband signal amplifier and optimize the performance of the device,with a new design method based on sound-induced optical fiber grating,by analyzing the spectrum of experimental tests and to meet the test requirements to produce sound-induced long period fiber grating,for produce sound-induced long period fiber grating required MHz magnitude acoustic signals needs,designed a new type of RF amplifier circuit.Theoretical analysis and experimental verification was done to the data of Performance data obtained fiber grating sound-induced resonance peaks in the transmission spectrum transmission depth examination amplifier circuit.Results are expressed:the amplifier can meet the requirements of the device to produce sound-induced long period fiber grating,this result is helpful to get a significant improvement and optimization of the performance of the broadband signal amplifier.