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首页> 外文期刊>Applied Optics >Measurement of gain tilt and its contribution to composite second-order distortion in the analog-digital transmission systems with Er/Yb fiber amplifiers
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Measurement of gain tilt and its contribution to composite second-order distortion in the analog-digital transmission systems with Er/Yb fiber amplifiers

机译:带有Er / Yb光纤放大器的模数传输系统中增益倾斜的测量及其对复合二阶失真的影响

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摘要

Fiber-optic-based analog or digital community antenna television systems experience composite second-order (CSO) distortion caused by the interaction between the gain tilt of the doped fiber amplifier and the laser chirp due to modulation. The gain tilt for an analog-digital transmission system with a high-power erbium/ytterbium-codoped fiber amplifier has been experimentally measured and its contribution to the CSO distortion of the system is evaluated. The results are in good agreement when compared with the direct measurement of the CSO distortion of the transmission system with and without the amplifier. The dependence of the gain tilt on the modulation frequency and wavelength of the input light is also investigated.
机译:基于光纤的模拟或数字社区天线电视系统会遇到复合二阶(CSO)失真,这是由于调制导致的掺杂光纤放大器的增益倾斜与激光chi之间的相互作用所引起的。已经对具有高功率掺with /掺-光纤放大器的模数传输系统的增益倾斜进行了实验测量,并评估了其对系统CSO失真的影响。与直接测量带放大器和不带放大器的传输系统的CSO失真相比,结果完全吻合。还研究了增益倾斜对输入光的调制频率和波长的依赖性。

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