Fiber optic transceiver and full duplex point-to-point data link
AssigneeGeneral Dynamics, Pomona Division
InventorJohn P. Palmer
Life of this patent
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Abstract
A full duplex data link for use between two transceiver terminals utilizing a single optical fiber for data transmission. The respective transmitters and receivers are coupled to the optical fiber utilizing a directional coupler in which the two fibers are of different diameters, the smaller fiber is the input fiber, and directional coupling is effected by joining a flat elliptical face formed on a curved section of the larger fiber and a flat elliptical face formed by severing the smaller fiber at an angle to the axis thereof.
Claims16
A duplex fiber optic data transceiver comprising:
- means for transmitting data to an input optical fiber;
- means for receiving data from an output optical fiber;
- a coupler;
- and
- a bidirectional optical fiber;
- said coupler comprising the termination of the input optical fiber at its junction with a fiber comprising the output optical fiber and the bidirectional optical fiber, the termination of the input optical fiber being a substantially planar elliptical surface at an angle inclined to the axis of the fiber and extending completely through the core of the fiber, the diameter of the output/bidirectional fiber being greater than the input fiber, and the junction with the output/bidirectional fiber being an elliptical planar surface formed on the outside of an arc of said fiber.
A duplex fiber optic data link system comprising first and second transceiver means coupled by a single bidirectional optical fiber wherein each transceiver means comprises means to transmit data to an input optical fiber, means to receive data from an output optical fiber, and a coupler;
- said coupler comprising the termination of the input optical fiber at its junction with a fiber comprising the output optical fiber and the bidirectional fiber, the termination of the input optical fiber being a substantially planar elliptical surface at an angle inclined to the axis of the fiber and extending completely through the core of the fiber, the diameter of the output/bidirectional fiber being greater than the input fiber and the junction on the output/bidirectional fiber being an elliptical planar surface formed on the outside of an arc of said fiber.
Dependencies are inferred from the claim text.