Time-space-conversion optical signal processing using arrayed-waveguide grating
Time-space-conversion optical signal processing using arrayed-waveguide grating
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DOI：
10.1049/el:19971258
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发表时间：
1997-10
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影响因子：
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通讯作者：
Takashi Kurokawa;Hiroyuki Tsuda;Keiji Okamoto;Kazunori Naganuma;Hirokazu Takenouchi;Yasuyuki Inoue;M. Ishii
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文献类型：
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作者：
Takashi Kurokawa;Hiroyuki Tsuda;Keiji Okamoto;Kazunori Naganuma;Hirokazu Takenouchi;Yasuyuki Inoue;M. Ishii
利用时空转换技术，实现了传统电子手段难以实现的100Gbit/S数据速率的超高速光信号处理。这样的处理实现了许多操作，例如超高速比特流的形成、整形、模式识别甚至路由。这项技术已经通过使用自由空间光学和可见光波长的衍射光栅对和透镜得到了广泛的演示。提出了一种基于阵列波导光栅的时空转换光信号处理方法。我们给出了使用(A)衍射光栅和(B)阵列波导光栅的时空转换处理系统的原理图。在这两个系统中，时间波形被色散元件转换为焦平面中的频谱。然后，频谱由空间滤波器并行调制，并重新转换为重塑的时间波形。
Ultrafast optical signal processing over 100 Gbit/s data rate, which is difficult to do by traditional electronic means, has been achieved using time-space-conversion technology. Such processing enables many operations such as the formation, reshaping, pattern recognition and even routing of an ultrafast bit stream. This technology has been widely demonstrated by using free-space optics with diffraction grating pairs and lenses at visible wavelengths. We have proposed time-space-conversion optical signal processing using an arrayed-waveguide grating. We show the schematics of time-space-conversion processing systems using (a) diffraction gratings and (b) arrayed-waveguide gratings. In both systems, a temporal waveform is converted to a frequency spectrum in the focal plane by the dispersive element. The frequency spectrum is then modulated in parallel by a spatial filter and reconverted to a reshaped temporal waveform.