Compact free-space optical terminal for multi-gigabit signal transmissions with a single-mode fiber

Yoshinori Arimoto

doi:10.1117/12.808796

24 February 2009 Compact free-space optical terminal for multi-gigabit signal transmissions with a single-mode fiber

Yoshinori Arimoto

Proceedings Volume 7199, Free-Space Laser Communication Technologies XXI; 719908 (2009) https://doi.org/10.1117/12.808796
Event: SPIE LASE: Lasers and Applications in Science and Engineering, 2009, San Jose, California, United States

Abstract

This paper shows the design and the performance of a new free-space optical communication terminal including the results of the indoor and outdoor demonstration experiments in a short link distance. To provide flexible and high-speed connectivity to the terrestrial free-space optical communications, a new compact laser communication terminal has been developed at NICT. The terminal has a feature to connect the free-space laser beam directly to single mode fiber by using a special fiber coupler to focus the free-space laser beam and couple it into the single mode fiber, fast and accurate fine tracking system and a small refractive-type telescope with diffraction limited performance. The bandwidth of the fine tracking system is more than 5 kHz using an off-the-shelf miniature Galvano mirror actuator and an analog PID controller.

Citation Download Citation

Yoshinori Arimoto "Compact free-space optical terminal for multi-gigabit signal transmissions with a single-mode fiber", Proc. SPIE 7199, Free-Space Laser Communication Technologies XXI, 719908 (24 February 2009); https://doi.org/10.1117/12.808796

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