Bidirectional Fiber Transmission

Paper Summary:

This paper begins with an explanation of the four common methods of providing bidirectional communications between two devices and then explains the technique of transmitting multiple optical signals on a single optical fiber known as wavelength division multiplexing. The paper concludes with a comparison of single fiber transmission and dual fiber transmission and an explanation of the advantages of single fiber transmission.

From the Paper:

"Duplexing methods determine the overall throughput that is shared between the two directions of transmission: downstream and upstream. The important property of a duplex method is its ability to achieve a good distribution of high data rates for all the loops in a cable binder. If the same frequency bands are used simultaneously for both upstream and downstream transmission in a cable binder, the available capacity will be severely affected."

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