Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1995-02-24
1997-02-04
Boudreau, Leo
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359130, 359174, 359341, 385 10, H04B 1016, H04B 1402, H01S 300
Patent
active
056004737
ABSTRACT:
The present invention relates to optical amplifier systems which include optical add/drop multiplexing capabilities. The optical amplifier system includes a first optical circulator with at least three circulator ports. An optical transmission fiber optically communicates with the first circulator port for transporting a wavelength division multiplexed (WDM) optical transmission signal. A section of optically amplifying rare-earth doped fiber amplifies the WDM optical transmission signal input to the first circulator port. A wavelength-selecting optical fiber including at least one in-fiber Bragg grating for selectively reflecting an optical signal of a particular wavelength from the WDM optical signal optically communicates with the second circulator port. The optical amplifier system further includes a second optical circulator with at least three optical circulator ports, one of which communicates with the wavelength-selecting optical fiber. Another of the optical ports optically communicates with an optical fiber transmitting optical signals to be added to the WDM optical transmission signal.
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Boudreau Leo
Burke Margaret A.
Ciena Corporation
Feeney William L.
Mehta Bhavesh
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