Measurements of the Baseband Frequency Response of a 1-km Fiber.

Typical light-emitting diodes have a spectral width between 300 A and 500 A. This is sufficient to cause significant pulse broadening as a result of material dispersion in a long optical glass fiber. An experiment was performed to measure the magnitude of this effect in a fiber of 1-km length. The experiment measures the average intensity transfer function of the fiber.