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Development of optical antennas utilizing free form surface optics for the high speed laser communication systems

机译:利用用于高速激光通信系统的自由形状表面光学光天线的开发

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Next generation laser communication systems will require small optical antennas and fine tracking system. Such optical communication systems might be applied not only to space communications such as optical feeder links, intersatellite links and stratospheric platforms but also optical links for long distance communication on the ground. We have developed a high-speed laser communication system including a small optical antenna which utilizes off-axis free form surface optical system, and a fine tracking system which feeds back an incident angle signal detected by quadrant detector to a small fine positioning mirror. In particular, the available mirror actuator response frequency for tracking is approximately 2kHz. Accordingly, even though the received 1.5μm laser beam experiences angle-of-arrival fluctuation as a result of atmospheric turbulence the antenna with this fine tracking function has a capability coupling the laser beam directly to the single mode fiber.
机译:下一代激光通信系统需要小型光天线和精细跟踪系统。这种光通信系统不仅可以应用于诸如光学馈送器链路,梭技术链路和地段平台的空间通信,而且还可以应用于地面上长距离连通的光学链路。我们开发了一种高速激光通信系统,包括小光天线,其利用偏离自由形式的表面光学系统,以及一个精细跟踪系统,其馈回由象限检测器检测到的入射角信号到小型精细定位镜。特别地,用于跟踪的可用镜像致动器响应频率约为2kHz。因此,即使所接收的1.5μm激光束经历到到达角度的波动,由于大气湍流,具有该精细跟踪功能的天线具有将激光束直接耦合到单模光纤的能力。

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