Wideband subcarrier multiplexed optical communication system ope

Details Wideband subcarrier multiplexed optical communication system ope Wideband subcarrier multiplexed optical communication system ope

1988-09-08

1990-08-28

Orsino, Joseph A.

Multiplex communications

Wide area network

Packet switching

455610, H04J 1402, H04B 1004

Patent

active

049531565

ABSTRACT:
An optical communication system includes an optical transmitter for transmitting a subcarrier multiplexed optical signal through a single mode optical fiber to an optical receiver. The optical transmitter includes a semiconductor laser diode for generating a light beam. The laser diode is preferably a high speed InGaAsP laser diode emitting in a spectral range of 1.3-1.6 micrometers. The light beam is intensity modulated with a composite modulation signal to provide the optical signal for transmission. The composite modulation signal includes multiple modulated microwave carriers that cover a total bandwidth greater than one octave. Harmonics and intermodulation products do not interfere with transmission, and a favorable signal-to-noise ratio or bit error rate is maintained when the bandwidth of the composite modulation signal exceeds one octave.

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