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Injection Locked Passively Modelocked Semiconductor Laser for Optical Heterodyne Detection Using a Single Axial Mode

机译:注射锁定被动模型的半导体激光器,用于使用单个轴向模式进行光学外差检测

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The optical heterodyne detection for an extremely densely channelized coherent communication systems using phase coherent optical combs is demonstrated by using a passively modelocked semiconductor laser injection locked to a master laser oscillator. The single sideband noise of the heterodyne beat tone at 13.160 GHz was reduced to -123 dBc/Hz at 100 kHz offset from the carrier by exploiting the excellent noise rejection performance of a commercially available microwave bandpass filter. A signal-to-noise ratio of over 65 dB/Hz has been achieved in a single channel filtered from two analog RF signals detuned by only 200 MHz. These results show improved signal-to-noise ratio and superior crosstalk reduction between densely packed neighboring channels via electrical manipulation of the optical heterodyne detection signal.
机译:通过使用锁定到主激光振荡器的被动模型的半导体激光器来说明使用相位相干光学梳理的极小密集信道通信系统的光学外差检测。通过利用市售微波带通滤波器的优异噪声抑制性能,在13.160GHz的外差击球音的单边带噪声以13.160GHz的偏移量减少到-123dBc / Hz。在从两个模拟RF信号中滤除的单个通道中实现了超过65dB / Hz的信噪比。这些结果显示通过光学外差检测信号的电气操纵,改善了密集包装的相邻通道之间的发信噪比和优异的串扰。

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