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Space laser communication is the perfectly choose to the earth integrated information
backbone network in the future. This paper introduces the structure of the earth integrated information
network that is a large capacity integrated high-speed broadband information network, a variety of
communications platforms were densely interconnected together, such as the land, sea, air and deep air
users or aircraft, the technologies of the intelligent high-speed processing, switching and routing were
adopt. According to the principle of maximum effective comprehensive utilization of information
resources, get accurately information, fast processing and efficient transmission through inter-satellite,
satellite earth, sky and ground station and other links. Namely it will be a space-based, air-based and
ground-based integrated information network. It will be started from the trends of laser communication.
The current situation of laser multi-point communications were expounded, the transmission scheme of
the dynamic multi-point between wireless laser communication n network has been carefully studied, a
variety of laser communication network transmission schemes the corresponding characteristics and
scope described in detail , described the optical multiplexer machine that based on the multiport form
of communication is applied to relay backbone link; the optical multiplexer-based on the form of the
segmentation receiver field of view is applied to small angle link, the optical multiplexer-based form of
three concentric spheres structure is applied to short distances, motorized occasions, and the
multi-point stitching structure based on the rotation paraboloid is applied to inter-satellite
communications in detail. The multi-point laser communication terminal apparatus consist of the
transmitting and receiving antenna, a relay optical system, the spectroscopic system, communication
system and communication receiver transmitter system. The communication forms of optical
multiplexer more than four goals or more, the ratio of received power and volume weight will be
Obvious advantages, and can track multiple moving targets in flexible.It would to provide reference for
the construction of earth integrated information networks.
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