Repeater and repeating method
AssigneeFujitsu Limited
InventorsHisao Nakashima, Takeshi Hoshida
Life of this patent
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Abstract
A repeater is disclosed that transmits an optical signal using wave division multiplexing. The repeater includes a demultiplexing unit that separates plural channels contained in the optical signal, an adjusting unit that adjusts at least optical power of each of the channels according to a control signal, a multiplexing unit that outputs a multiple wavelength signal in which the channels are multiplexed, and a monitoring unit that determines a modulation scheme and a bit rate of the optical signal for each of the channels so as to generate the control signal.
Claims11
A repeater that transmits an optical signal using wave division multiplexing, comprising:
- a demultiplexing unit that separates a plurality of channels contained in the optical signal;
- an adjusting unit that adjusts at least optical power of each of the channels according to a control signal;
- a multiplexing unit that outputs a multiple wavelength signal in which the channels are multiplexed;
- and
- a monitoring unit that determines a modulation scheme and a bit rate of the optical signal for each of the channels,
- wherein the monitoring unit includes a memory unit that stores relationships between the modulation schemes, the bit rates, peak values, and optical power integration values, and the monitoring unit generates the control signal for the modulation scheme and the bit rate of the optical signal for each of the channels, the modulation scheme and the bit rate being determined by referring to the predetermined relationships stored in the memory unit.
A repeating method implemented in a repeater for transmitting an optical signal using wave division multiplexing, comprising:
- separating, by a demultiplexing unit of the repeater, a plurality of channels contained in the optical signal;
- adjusting, by an adjusting unit of the repeater, at least optical power of each of the channels according to a control signal;
- and
- outputting, by a multiplexing unit of the repeater, a multiple wavelength signal in which the channels are multiplexed;
- and
- determining, by a monitoring unit of the repeater, a modulation scheme and a bit rate of the optical signal for each of the channels,
- wherein the monitoring unit includes a memory unit that stores relationships between the modulation schemes, the bit rates, peak values, and optical power integration values, and the monitoring unit generates the control signal for the modulation scheme and the bit rate of the optical signal for each of the channels, the modulation scheme and the bit rate being determined by referring to the predetermined relationships stored in the memory unit.
Dependencies are inferred from the claim text.