A measure of the departure of the core from roundness. A multiport device used to distribute optical power. Unwanted signals in a communication channel that come from another channel. The unit for measuring the relative strength of a signal. The spreading of light pulses as they travel down the fiber.
Dispersion limits the bandwidth of a fiber.
Narrows the spreading of the pulse as it travels through the fiber. A permanent joint accomplished by the application of localized heat sufficient to fuse or melt the ends of the optical fiber, forming a continuous single fiber. An optical fiber which has a refractive index that gets progressively lower away from the center. This characteristic causes the light rays to be continually refocused by refraction in the core size. The absolute index of refraction is a fraction or ratio of the velocity of light in one medium compared to the velocity of light in a vacuum.