Optical relay device and optical relay method

Abstract

Provided is an optical relay device (10) comprising: a first reception unit (11) that receives a first optical signal; a second reception unit (12) that receives a second optical signal; a measurement unit (13) that sequentially measures the quality of the first optical signal and the quality of the second optical signal; a first compensation unit (14) that compensates for the first optical signal on the basis of the quality of the first optical signal measured by the measurement unit; a second compensation unit (15) that compensates for the second optical signal on the basis of the quality of the second optical signal measured by the measurement unit; a first transmission unit (16) that transmits the first optical signal which has been wavelength-converted; and a second transmission unit (17) that transmits the second optical signal which has been wavelength-converted.

Claims

1. A first receiving unit that receives a first optical signal, A second receiving unit that receives a second optical signal, A measuring unit that sequentially measures the quality of the first optical signal and the quality of the second optical signal, A first compensation unit compensates the first optical signal based on the quality of the first optical signal measured by the measurement unit, A second compensation unit compensates the second optical signal based on the quality of the second optical signal measured by the measurement unit, A first transmitting unit that transmits the wavelength-converted first optical signal, A second transmitting unit that transmits the wavelength-converted second optical signal, It has, The measuring unit determines the frequency of measuring the quality of the first optical signal based on the quality of the first optical signal that has been measured. Optical relay device.

2. The measuring unit measures the quality of the first optical signal at a first frequency if the measured quality of the first optical signal is of first quality, and measures the quality of the first optical signal at a second frequency higher than the first frequency if the measured quality of the first optical signal is of second quality which is lower than the first quality. The optical relay device according to claim 1.

3. A first receiving unit that receives a first optical signal, A second receiving unit that receives a second optical signal, A measuring unit that sequentially measures the quality of the first optical signal and the quality of the second optical signal, A first compensation unit compensates the first optical signal based on the quality of the first optical signal measured by the measurement unit, A second compensation unit compensates the second optical signal based on the quality of the second optical signal measured by the measurement unit, A first transmitting unit that transmits the wavelength-converted first optical signal, A second transmitting unit that transmits the wavelength-converted second optical signal, It has, The measurement unit determines the frequency at which it measures the quality of the first optical signal based on the elapsed time of communication using the first optical signal. Optical relay device.

4. The measurement unit measures the quality of the first optical signal at a third frequency when the elapsed time of communication using the first optical signal is the first elapsed time. If the elapsed time of communication using the first optical signal is longer than the first elapsed time (second elapsed time), the quality of the first optical signal is measured at a fourth frequency lower than the third frequency. The optical relay device according to claim 3.

5. The first compensation unit determines compensation parameters for the first optical signal based on the parameters obtained when the measurement unit performs error detection for quality measurement. The optical relay device according to claim 1 or 3.

6. The first compensation unit determines a compensation process according to the quality of the first optical signal measured by the measurement unit. The optical relay device according to claim 1 or 3.

7. The first compensation unit has an analog compensator that includes at least one of skiw compensation, spectral compensation, and IQ imbalance compensation. The optical relay device according to claim 1 or 3.

8. The first compensation unit has a digital compensator that performs at least one of the following: skiw compensation, wavelength dispersion compensation, and polarization dispersion compensation. The optical relay device according to claim 1 or 3.

9. The first optical signal is received by the first receiving unit. The second optical signal is received by the second receiving unit. The quality of the first optical signal and the quality of the second optical signal are measured in order. Based on the measured quality of the first optical signal, the first optical signal is compensated and the wavelength-converted first optical signal is transmitted. Based on the measured quality of the second optical signal, the second optical signal is compensated and the wavelength-converted second optical signal is transmitted. Based on the measured quality of the first optical signal, the frequency of measuring the quality of the first optical signal is determined. Optical relay method.

10. The first optical signal is received by the first receiving unit, The second optical signal is received by the second receiving unit. The quality of the first optical signal and the quality of the second optical signal are measured in order. Based on the measured quality of the first optical signal, the first optical signal is compensated and the wavelength-converted first optical signal is transmitted. Based on the measured quality of the second optical signal, the second optical signal is compensated and the wavelength-converted second optical signal is transmitted. Based on the elapsed time of communication using the first optical signal, the frequency of measuring the quality of the first optical signal is determined. Optical relay method.

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