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Earth integrated information network can be real-time acquisition, transmission and processing the
spatial information with the carrier based on space platforms, such as geostationary satellites or in low-orbit
satellites, stratospheric balloons or unmanned and manned aircraft, etc. It is an essential infrastructure for
China to constructed earth integrated information network. Earth integrated information network can not only
support the highly dynamic and the real-time transmission of broadband down to earth observation, but the
reliable transmission of the ultra remote and the large delay up to the deep space exploration, as well as
provide services for the significant application of the ocean voyage, emergency rescue, navigation and
positioning, air transportation, aerospace measurement or control and other fields.Thus the earth integrated
information network can expand the human science, culture and productive activities to the space, ocean and
even deep space, so it is the global research focus. The network of the laser communication link is an
important component and the mean of communication in the earth integrated information network. Optimize
the structure and design the system of the optical antenna is considered one of the difficulty key technologies
for the space laser communication link network. Therefore, this paper presents an optical antenna system that
it can be used in space laser communication link network.The antenna system was consisted by the plurality
mirrors stitched with the rotational paraboloid as a substrate. The optical system structure of the multi-mirror
stitched was simulated and emulated by the light tools software. Cassegrain form to be used in a relay optical
system. The structural parameters of the relay optical system was optimized and designed by the optical
design software of zemax. The results of the optimal design and simulation or emulation indicated that the
antenna system had a good optical performance and a certain reference value in engineering. It can provide
effective technical support to realize interconnection of earth integrated laser link information network in the
future.
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