Initial Alignment Scheme and Tracking Control Technique of Free Space Optics Laser Beam

Takeshi Tsujimura, Shigeki Muta, Yuichiro Masaki, Kiyotaka Izumi

Abstract

This paper describes the laser beam alignment techniques for free space optical communication. Bilateral laser transmission system is designed between two active free-space-optical apparatuses, which are equipped with galvanic scanners, E/O and O/E converters and are able to control laser beam discharging directions. Two alignment strategies are proposed with regard to the transient and steady state of optical signal transmission. Search method for initial alignment is established based on the Gaussian beam optics, and a tracking control system is constructed for laser beam to maintain stable telecommunication between roaming transmission equipments. Experiments reveal that the proposed techniques enable the free space optics system to locate the target receiver and to pursue the unstable transmission apparatus.

References

  1. Ghimire, R., Mohan, S., 2011. Auto tracking system for free space optical communications. 13th International Conference on Transparent Optical Networks, pp.1-3.
  2. Muta, S., Tsujimura, T., Izumi, K., 2013. Laser beam tracking system for active free-space optical communication. Proc. SII2013, pp.879-884.
  3. Tsujimura, T., Yoshida, K., 2004 Active free space optics systems for ubiquitous user networks. Proc. 2004 Conference on Optoelectronic and Microelectronic Materials and Devices.
  4. Yamashita, T., et al., 2011. The new tracking control system for Free-Space Optical Communications. 2011 International Conference on Space Optical Systems and Applications, pp.122-131.
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Paper Citation


in Harvard Style

Tsujimura T., Muta S., Masaki Y. and Izumi K. (2014). Initial Alignment Scheme and Tracking Control Technique of Free Space Optics Laser Beam . In Proceedings of the 5th International Conference on Optical Communication Systems - Volume 1: OPTICS, (ICETE 2014) ISBN 978-989-758-044-4, pages 83-88. DOI: 10.5220/0005101200830088


in Bibtex Style

@conference{optics14,
author={Takeshi Tsujimura and Shigeki Muta and Yuichiro Masaki and Kiyotaka Izumi},
title={Initial Alignment Scheme and Tracking Control Technique of Free Space Optics Laser Beam},
booktitle={Proceedings of the 5th International Conference on Optical Communication Systems - Volume 1: OPTICS, (ICETE 2014)},
year={2014},
pages={83-88},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0005101200830088},
isbn={978-989-758-044-4},
}


in EndNote Style

TY - CONF
JO - Proceedings of the 5th International Conference on Optical Communication Systems - Volume 1: OPTICS, (ICETE 2014)
TI - Initial Alignment Scheme and Tracking Control Technique of Free Space Optics Laser Beam
SN - 978-989-758-044-4
AU - Tsujimura T.
AU - Muta S.
AU - Masaki Y.
AU - Izumi K.
PY - 2014
SP - 83
EP - 88
DO - 10.5220/0005101200830088