Optical fiber couplers for various LEDs and light sensors are commercially available, but you can skip the connector and simply connect silica and plastic fibers directly to LEDs and sensors. This lets you transmit light point-to-point with very little loss, and even bend it around corners. The light stays in the core because the cladding has a slightly higher index of refraction than the core. To be particular, in this project here, we are going to transfer our voice from one point to another by shining a laser light on a solar panel. This is made possible by Light Fidelity or (Li-Fi) in short, for those who are new, Li-Fi is a technology in which data can be transferred using light. The conventional method, known as the cutback method, involves coupling fiber to the source and measuring the power out. Tubular skylights and other reflective systems have long made it possible to pass daylight down to the lower levels of an underground interior, but never with this kind of flexible efficiency. Friends, Welcome to the 21st Century! Some of you will be thinking, Why not use our good old friend Copper Wire? Friends, We all know light can travel 299,792,458 meters per second.
