Instrumentation systems employing optical-fibre links are under intensive development as they can offer features such as intrinsic safety, electrical isolation and freedom from electromagnetic interference. There are growing interests in the potential for such systems in military applications, process industries as well as general manufacturing. There are also requirements for optically-energized pneumatic and hydraulic actuation systems whereby a complete control system can be realised by optical means. This type of system may be referred to as an all-fibre control-by-light system. Examples of such control systems will be described.
K. F. Hale,
B. E. Jones,
"Electro-Optic Techniques For The Control Of Actuators", Proc. SPIE 1012, In-Process Optical Measurements, (10 March 1989); doi: 10.1117/12.949331; https://doi.org/10.1117/12.949331