06323994 is referenced by 34 patents and cites 2 patents.

An in-line repeater implemented within a Wavelength Division Multiplexed (WDM) optical fiber communication system is shown that includes an attenuator. The communication system includes a WDM multiplexer that transmits a WDM signal including a series of WDM channels, via the in-line repeater, to a demultiplexer that separates the WDM channels into a series of output signals. Within the in-line repeater, the attenuator is coupled between two stages of a single amplifier in order to aid in the power equalization of the WDM channels at the demultiplexer. The addition of the attenuator results in the powers and OSNR of the individual WDM channels becoming closer in value, hence reducing the time and the dynamic range of transmitter power adjustments required for traditional methods to equalize the channels' powers.

Title
WDM system equalization with EDFA optical amplifiers
Application Number
9/289733
Publication Number
6323994 (B1)
Application Date
April 12, 1999
Publication Date
November 27, 2001
Inventor
Suet Yuen
Kanata
US
Jinghui Li
Nepean
US
Assignee
Nortel Networks
US
IPC
H04J 14/02
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