If the LOS light turns red, it means there's a problem somewhere along the fiber link — maybe a break in the cable, a poor splice, or low signal strength. Simply put, if it's red, the job isn't done properly. This guide explains the likely causes, the checks you can do at home, and when the issue needs technician support. Existing Krishii Fiber customers can share their registered mobile number, area and a. The infrared wavelengths transition between light and heat, like you can see the dull red glow of an electric heating element and feel the heat. At longer wavelengths, ambient temperature becomes background noise, disturbing signals. What is the red light on my optical cable? The red light of a laser is coupled into the core of an optical fiber in a targeted manner (an LED is usually too. An optical fiber, or optical fibre, is a flexible glass or plastic fiber that can transmit light from one end to the other.
