| 简介 |
PURPOSE : A wide band optical amplifier including optical fiber containing rare-earth element is provided to reduce strength loss and noise index before receiving optical signals by minimizing division paths of the optical signals and elements for dividing optical signals to a circulator and an optical fiber grating.
CONSTITUTION : A circulator(240) is used for outputting optical signals of a first port to a second port and outputting spontaneous emission light of the second port and an S-band optical signal to a third port. An optical fiber grating(241) is used for passing a C-band optical signal and an L-band optical signal of the optical signals of the second port, reflecting the S-band optical signal to the second port, and outputting the spontaneous emission light to the second port. An output unit(260) outputs optical signals of a first stage and a third stage to a fourth stage. A wavelength selection divider(250) is used for outputting the L-band optical signal to the second port and outputting the C-band optical signal to the third port. A first optical amplifier(210) is connected to the first port in order to amplify the C-band optical signal and the L-band optical signal. A second optical amplifier(220) is used for amplifying the L-band signal of the second port and outputting the amplified signal to the third stage of the output unit. A third optical amplifier(230) is used for amplifying the S-band optical signal of the third port and outputting the amplified signal to the first stage of the output unit.
© KIPO 2005 |
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