Fiber optic bidirectional data bus tap

Details Fiber optic bidirectional data bus tap Fiber optic bidirectional data bus tap

1986-01-07

1989-03-07

Lee, John D.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

350 9615, 455612, G02B 628

Patent

active

048100528

ABSTRACT:
A fiber optic data bus tap includes a tap coupler for coupling signals traveling in either direction in a data bus fiber into one of two lengths of a tap fiber. The signals are then guided to a receiver. The tap fiber may include a fiber optic coupler formed between the two lengths thereof for splitting the signal coupled from the data bus between the two lengths of the tap fiber so that they both carry the same information. The receiver is couple to one of the two lengths of the tap fiber. One of the lengths of the tap fiber may terminate in a mirror so that signals are reflected back to the tap coupler where a portion of the reflected signal is transmitted to the receiver. A transmitter may be coupled to the power splitter for supplying signals to the tap fiber for input to the data bus. The system may employ a light emitting diode as a transceiver instead of having a separate receiver and transmitter.

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