Optical fiber transmissive signal modulation system

Details Optical fiber transmissive signal modulation system Optical fiber transmissive signal modulation system

1987-06-10

1989-11-07

Griffin, Robert L.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

34087029, 455607, 455612, H04B 900

Patent

active

048797600

ABSTRACT:
The device of the present invention provides a signal modulation system. The system has a first station communicatively connected to at least first and second optical fibers. The first station has a transmitter to produce an unmodulated light carrier signal through the first optical fiber and a receiver to convert a modulated light signal from the second optical fiber to a demodulated electrical signal for output. The system also has a second station communicatively connected to the first and the second optical fibers. The second station has an amplifier and power source which receive input carrier modulating signals, a modulation circuit, and an electro-optical modulator constructed and arranged to modulate transmission of the light carrier signal from the first optical fiber to the second optical fiber.

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1984, Yokogawa Hokushin Electric Corp.; Optically-powered Transducer with Optical-Fiber Data Link; Publication in SPIE, Vo. 478, Ohte et al.

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