Optical: systems and elements – Optical amplifier – Optical fiber
Patent
1997-07-15
2000-01-04
Moskowitz, Nelson
Optical: systems and elements
Optical amplifier
Optical fiber
359134, 359160, 359337, G02F 135
Patent
active
060116455
ABSTRACT:
An erbium doped fiber amplifier having one pumping source which outputs pump power so as to excite a light signal, the amplifier including: a first erbium doped fiber for receiving an excitation light signal input from the pumping source, and amplifying a transmitted light signal input from an input stage; a first wavelength division multiplexer located at an output of the first erbium doped fiber, for inputting the excitation light signal input from the pumping source to the first erbium doped fiber, the first multiplexer also receiving the transmitted light signal amplified from the first erbium doped fiber and outputting it to a next stage; a dispersion compensation fiber at an output of the first wavelength division multiplexer for compensating for loss caused due to the dispersion characteristics of the transmitted light signal; a second wavelength division multiplexer located at an output of the dispersion compensation fiber, for receiving the input transmitted light signal and the excitation light signal input from the pumping source at two input terminals and inputting the two signals to a second erbium doped fiber; and the second erbium doped fiber located at an output of the first wavelength division multiplexer for amplifying the transmitted light signal with the excitation light signal input.
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Bushnell Esq. Robert E.
Moskowitz Nelson
Samsung Electronics Co,. Ltd.
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