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Reduction of optical beat interference in a subcarrier multiple-access passive optical network through the use of an amplified light-emitting diode

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4 Author(s)
R. D. Feldman ; Crawford Hill Lab., AT&T Bell Labs., Holmdel, NJ, USA ; K. -Y. Liou ; G. Raybon ; R. F. Austin

We show that a transmitter consisting of a light-emitting diode (LED) followed by a semiconductor amplifier can be used to transmit data in a subcarrier multiple access system for fiber-in-the-loop. Optical beat interference penalties, which have been observed when conventional laser transmitters are used, were eliminated with the amplified LED. Penalty-free system operation is observed when a signal is transmitted with 17 dB less optical power than each of two interfering transmitters.

Published in:

IEEE Photonics Technology Letters  (Volume:8 ,  Issue: 1 )