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July 6, 2022 at 6:50 am
tlyeer
Subscriber1.老师你好,我在设计用于WDM系统的频率交织器时遇到如下问题。
首先,在Interconnect中使用ONA分析交织器的的上下两臂输出谱,(相当于平顶通道MZI干涉器件),此时ONA显示光谱输出正确,然后我是用多个CW单波长激光器模拟对应多波长激光器,输入交器中(激光器的多个波长调整到对应的交织器的通带中心),使用OSA观察上下交织器的输出谱,发现,它并没有按照交织器的通带滤波,并且,我发现当我改变Interconnect中仿真时候的simple rate的时候,交织器的输出变化很大,似乎与它有关,请问如何正确设置,才能实现交织器(类似MZI)的滤波功能的输出呢?
上图为使用ONA分析得到的交织器的两臂输出(相当于平顶通道MZI干涉仪两端输出)
上图为输入交织器的多波长光载波
上图为交织器端口1使用ONA得到的传输谱(滤波通带)
上图为将光载波输入交织器后Interconnect的仿真交织器端口1输出(与ONA获得的通带滤波并不匹配)
就是说Interconnnect的仿真输出与ONA的分析的滤波通道并不匹配,没有按照交织器理想工作情况,隔一个通道滤出载波
2.我把交织器换成元件库中自带的FP腔滤波器充当交织器的一个输出也发现同样的问题,还请老师指教,谢谢!
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July 6, 2022 at 6:06 pm
Guilin Sun
Ansys Employee你说使用“多个CW单波长激光器模拟对应多波长激光器”,这个可能是个问题。请试着用单个激光,但是光谱比较宽看看结果如何。
Sample rate : When an element is connected to both an Optical Network Analyzer (ONA) and an electrical source (e.g. a DC source), the frequency range of the ONA must be the same as the sample rate of the electrical source. Set the expression for the "frequency range" of the ONA to "%sample rate%" to make it the same as the sample rate of the Root Element. This ensures that the sampling rates (frequency ranges) of the electrical and optical sources are consistent with each other. To change the frequency range of the ONA, use the sample rate property of the Root Element such that a wavelength range of 1500nm – 1600nm (matching the FDTD and MODE results) is chosen for ONA.
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July 6, 2022 at 8:46 pm
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