Ultrahigh dispersion of broadband microwave signals by incoherent photonic processing
Ultrahigh dispersion of broadband microwave signals by incoherent photonic processing
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DOI：
10.1364/oe.18.014752
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发表时间：
2010-07-05
期刊：
影响因子：
3.8
通讯作者：
Azana, Jose
中科院分区：
文献类型：
--
作者：
Park, Yongwoo;Azana, Jose
我们提出并演示了一种光纤非相干信号处理方案，以实现对带宽超过几十GHz的任意微波信号的非凡色散量。使用这种新方案，我们实验上实现了接近24 ns/GHz的微波色散值（相当于一段长度约为185，000 km的标准单模光纤引起的色散）。该方案用于纳秒长的微波信号的实时傅里叶变换（线性频率到时间映射），包括类方波波形，正弦脉冲和双脉冲波形，带宽超过20 GHz。(C)2010年美国光学学会
We propose and demonstrate a fiber-optic incoherent signal processing scheme to achieve extraordinary dispersion amounts on arbitrary microwave signals with bandwidths over tens of GHz. Using this new scheme, we experimentally achieve microwave dispersion values approaching 24 ns/GHz (equivalent to the dispersion induced by a section of standard single-mode fiber with a length of similar to 185,000 km). The scheme is used for real-time Fourier transformation (linear frequency-to-time mapping) of nanosecond-long microwave signals, including a square-like waveform, a sinusoidal pulse and a double pulse waveform, with bandwidths over 20 GHz. (C) 2010 Optical Society of America