What is the terminology for fibre optic sensors?

It is a kind of sensor based on the optical quantity conversion, taking the optical signal as the carrier of transformation and transmission, and using the optical fibre to convey the optical signal. Fibre optic sensor is mainly composed of light source, optical fibre (referred to as optical fibre), light detector and additional devices. There are many types of light sources, commonly used light sources are tungsten lamps, lasers and light-emitting diodes. Optical fibre is very thin, relatively soft, bendable, and is a transparent fibre that can conduct light. The reason why optical fibres can transmit optical information is because of the use of optical total reflection principle, that is, the incident angle is greater than the critical angle of total reflection of the light can be in the core and cladding of the interface of total reflection, the reflected light is still the same angle of incidence to the interface of the opposite side, so that the light will be in the optical fibre between the interface to repeatedly occur between the total reflection and transmission. Additional devices are mainly mechanical components, which vary with the type of parameter to be measured and the measurement method.