Abstract

Because LEDs have wide spectral widths, a fiber's bandwidth when measured with an LED (LED bandwidth) can be significantly different from that measured with a laser (laser bandwidth). To clarify this relation, we have investigated the LED bandwidth performance of 62.5-µm core diam (N.A. = 0.29) graded-index multimode fibers1 at both short (≈850-nm) and long (≈1300-nm) wavelengths and have developed models for relating that performance to the fiber’s laser bandwidth and the LED’s power spectrum. These models appear also to model the performance of 85-and 100-µm core diam fibers.

© 1986 Optical Society of America

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