The MIL-STD-1553B is one of the most used data buses for communication over aircraft and satellites. It requires a large amount of cables to connect all the onboard devices, therefore one of the most challenging issues in Spacecrafts (SCs) design is how to arrange all of them. Moreover, these wired communication systems represent up to 10% of the total mass of the satellite, introducing constraints on the cost of the mission launch and reducing the available room inside the satellite. We present here a novel system that can transport the MIL-STD-1553B signal over optical wireless, effectively removing wired connections. This can save weight and space while maintaining high performance and backward compatibility. We achieved these results by developing an innovative transceiver (TRX) board. The presented Optical Wireless Communication (OWC) system does not suffer from sniffing/jamming or from multipath interference. Moreover, it encompasses only Commercial Off-the-Shelf (COTS) components, so that no special technological development is needed and we can keep its cost low. Here, we first shortly summarize our approach and then discuss how it can be used to deploy OWC links over a SC. To this aim, our system can interface the MIL-STD-1553B data bus with the OWC devices without any modification of the protocol and of the bus architecture.
We theoretically and experimentally demonstrate a 100 Mb/s Optical Wireless Communication (OWC) system for 3U (30x30x30 centimeter) intra-CubeSat. The system has low power consumption and is made of low cost commercially available off-the-shelf (COTS) components such as VCSEL, APD, Si-PD and common ball lenses. Since the system is for the 3U CubeSat, 40 cm distance between optical transceiver was targeted. We successfully designed the system and tested with 4 mm and 5 mm ball lenses to optimize our system for the future activities.
KEYWORDS: Vertical cavity surface emitting lasers, Orthogonal frequency division multiplexing, Signal detection, Signal to noise ratio, Modulation, Wireless communications, Telecommunications
We experimentally demonstrate up to 40 Gbit/s optical wireless communication (OWC) systems made of commercial offthe- shelf components (COTS). The OWC systems use Non-Return to Zero (NRZ) or adaptive Orthogonal Frequency Division Multiplexing (OFDM), do not need active alignment and are designed to provide high-speed wireless connectivity in Data-Centers (DCs) or similar environments.
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