Error Control Coding
Overview Error control coding (ECC) is the coding procedure done to control the occurrences of errors. These techniques help in Error…
Eye Safety
Overview Eye safety is a prominent topic for any optics technology. Since FSO products, especially in urban areas, will be directing…
Smart Antennae
Overview Smart antennae are antenna arrays with smart processing algorithms and are used in identifying spatial signals. A smart antenna takes…
FSO Overview and Key Terms
Overview Free-Space Optics (FSO) communication, also called free-space optical communication, is an optical communication technology that uses light propagating in free…
Interception Resistance
Overview FSO communications have built-in interception resistance due to the way information is sent. Consider first how a radio-frequency signal is…
Space Development Agency (SDA)
The Space Development Agency (SDA) is a United States government entity that researches, develops, and fields next-generation technology for the United…
Wavelength Division Multiplexing (WDM)
Overview Wavelength division multiplexing (WDM) is the combination of many optical signals into one transmission medium. Rather than sending a signal…
FSO Physical Limitations
Some FSO Limitations include the following: Obstructions Flying birds, trees, and tall buildings can temporarily block a single beam when it…
Optical Inter-Satellite Links (OISL)
Overview Inter-Satellite Links (ISL) allow satellites to communicate with each other in a constellation. Optical Inter-Satellite Links (OISL) are ISLs that utilize…
Optical Limitations
Absorption Absorption is caused by molecules suspended in the terrestrial atmosphere interacting with an incident photon and absorbing some or all…