Optical transmission apparatus, optical transmission system, and optical transmission method
AssigneeFujitsu Limited
InventorRyosuke Goto
Life of this patent
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Abstract
An optical transmission apparatus in an optical transmission system that transmits an optical signal through a transmission fiber includes a measurement device that measures Raman gain efficiency of the transmission fiber; a level determiner that determines an input level of the optical signal based on Raman gain efficiency measured by the measurement device; and a controller that controls a level of the optical signal input to the transmission fiber to become the input level determined by the level determiner.
Claims10
An optical transmission apparatus in an optical transmission system that transmits an optical signal through a transmission fiber, the optical transmission apparatus comprising:
- a measurement device that measures Raman gain efficiency of the transmission fiber;
- a level determiner that determines an input level of the optical signal into the transmission fiber based on Raman gain efficiency measured by the measurement device;
- a controller that controls an input level of the optical signal into the transmission fiber to become the input level determined by the level determiner;
- and
- a loss calculator that calculates connection loss between the optical transmission apparatus and the transmission fiber, wherein
- the level determiner determines the input level, based on the connection loss calculated by the loss calculator and on the Raman gain efficiency.
An optical transmission system that transmits an optical signal through a transmission fiber, the optical transmission system comprising:
- a measurement device that measures Raman gain efficiency of the transmission fiber;
- a level determiner that determines an input level of the optical signal, based on the Raman gain efficiency measured by the measurement device;
- a controller that controls a level of the optical signal input to the transmission fiber to become input level determined by the level determiner;
- and
- a loss calculator that calculates connection loss between an optical transmission apparatus and the transmission fiber, wherein
- the level determiner determines the input level, based on the connection loss calculated by the loss calculator and on the Raman gain efficiency.
An optical transmission method of system that transmits an optical signal through a transmission fiber, the optical transmission method comprising:
- measuring Raman gain efficiency of the transmission fiber;
- determining an input level of the optical signal, based on the Raman gain efficiency measured at the measuring;
- controlling a level of the optical signal input to the transmission fiber to become input level determined at the determining;
- and
- calculating connection loss between an optical transmission apparatus and the transmission fiber, wherein
- at the determining, the input level is determined based on the connection loss and on the Raman gain efficiency.
Dependencies are inferred from the claim text.