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Optical wireless interfaces

There are physical spaces and infrastructure environments in which conventional radio-frequency (RF) wireless systems can result in hazardous conditions due to the intrinsic risk of producing high levels of electromagnetic interference (EMI), which can affect sensitive electronic equipment placed in proximity of such high energy RF sources. Two good examples of infrastructures where the levels of EMI are severely restricted are hospitals and aircrafts. In the former stated examples, the failure of any critical system due to electromagnetic interference can lead to severe injury or loss of human life.

Optical wireless interface for ARINC 479

Aviation industry can result largely benefited by the incorporation of wireless avionics capabilities, mainly due to the dramatic weight reduction associated to the removal of electrical wires. This significant weight reduction will inherently help to reduce operational costs. The implementation of a wireless optical interface for an avionics data network provides wireless capability without generating any electromagnetic interference to other systems already present in the aircraft. The presented interface acts completely transparent to an existent avionics bus topology and implies no modification whatsoever to any equipment already compatible with the bus.

Optical wireless interface for Broadcasting

The illumination channel is nice for broadcasting transmission or for addressing low speed communications for sensors (i.e. by means of polling protocols). Broadcasting information can be useful in several indoor application scenarios, as video/audio transmission for domestic in-home applications or wherever an EM constraint-free channel is needed (hospitals, nuclear or industrial plants, airplanes). It can be also used for outdoor broadcasting channels based on streetlamps, traffic lights, etc. Furthermore, it can be considered even in regular scenarios where RF use is allowed but commercial bands are rapidly becoming saturated.