Goedgebuer J P, Ferrière R, Laouar N
Appl Opt. 1996 Jan 10;35(2):254-63. doi: 10.1364/AO.35.000254.
A method of multichannel processing to compute correlation products simultaneously is introduced. The signals that process are encoded on a single light beam through the use of an electro-optic modulators that induce optical delays greater than the coherence length of light. The coherence-modulated light beam thus obtained is then spatially and temporally modulated through an acousto-optic Bragg cell. The potential number of channels is estimated to be approximately 5-10. The method can be combined with other existing systems, such as time-, space-, or frequency-multiplexed correlators, to increase the channel number. The method also applies to high-resolution spectral analysis.
介绍了一种用于同时计算相关乘积的多通道处理方法。待处理的信号通过使用诱导光延迟大于光的相干长度的电光调制器在单光束上进行编码。由此获得的相干调制光束随后通过声光布拉格单元进行空间和时间调制。通道的潜在数量估计约为5 - 10个。该方法可与其他现有系统相结合，如时间、空间或频率复用相关器，以增加通道数量。该方法也适用于高分辨率光谱分析。
