Fiber optics is a fascinating cable that can transmit light from one end to another. Using light as a signal, these cables are used to connect our world. It has the ability to connect and transmit information across countries and oceans. It is possible because the light travels trough fiber optics from one end to another. It is done because of total internal reflection.
Total Internal reflection means that the light hits the interface in which it is enclosed it reflects equally in the opposite direction with an angle of 90 degrees less or more. Its reflections can easily be seen as first, second and third.
Reflection and Refraction
The process of reflection and refraction is very simple and the optical fiber is a working example of the combination of reflection and refraction. The incident ray is sometimes refracted which means it passes through the glass, whereas reflected beam means to totally reflect the ray. The important thing to understand here is that if the light ray hits the surface an angle greater than the critical angle it will completely be reflected not refracted.
The essential feature for transmission of light in an optical fiber which occurs by total internal reflection is that the transmitting fiber must be coated with the material that has a refractive index smaller (Cladding material) than that of fiber material (Core). The emission of ultraviolet, visible or infrared radiations by the fiber depend on the choice of construction material.
Biomedical sensors are the future of the medical industry. It is the building block with which one could actually relate the medical field and electronic collectively. Biomedical sensors are used to gain the information on body and pathology, which is a branch of biomedical engineering. Biomedical sensors are classified into the physical sensor, chemical sensor, and biosensor.