Gbit/s transmission experiments with a 1.3micron high-speed surface- emitting LED and multimode graded-index fiber.
01 January 1986
Using a 1.3micron wide-bandwidth surface-emitting LED, transmission experiments were performed with 2.0 and 3.0 km lengths of 50/125micron multimode, graded-index fiber. Pulse shaping and equalization methods were used to achieve a 10-(-9) bit-error-rate for transmission at 1.2 Gb/s over 2.0 km and 1.0 Gb/s over 3.0 km with system margins of 1.8 and 1.1 dB, respectively. The system margin in the 3.0 km link was observed to increase to 7.0 dB when the data rate was reduced to 500 Mb/s. The 3.0 km result is a new distance record for a surface-emitting LED operating at 1.0 Gb/s with multimode graded-index fiber and demonstrates the significant potential for cost-sensitive short-haul wide- bandwidth data links based on LEDs and multimode fibers.