What Is High Blood Pressure? Blood pressure is the amount of force exerted by the blood against the walls of the arteries. A person's blood pressure is considered high when the readings are greater than 140 mm Hg systolic (the top number in the blood pressure reading) or 90 mm Hg diastolic (the bottom number).
You are here: Fiber optic light source is a fiber optic test equipment to measure the fiber optic loss for both single mode fiber cable and multimode fiber cables; usually the fiber optic light source is used with the fiber optic power meters.
An optical fiber is a thin fiber of glass or plastic that can carry light from one end to the other.The study of optical fibers is called fiber optics, which is part of applied science and engineering.Optical fibers are mainly used in telecommunications, but they are also used for lighting, sensors, toys, and special cameras for seeing inside small spaces.he main use of optical fiber is in long-distance communication (telecommunication). Since the light does not leak out of the fiber much as it travels, the light can go a long distance before the signal gets too weak. This is used to send telephone and internet signals between cities.