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US 10,374,703 B2Granted
Transmission device and signal monitoring method
AssigneeFujitsu Limited
InventorsShoichiro Oda, Takeshi Hoshida, Hisao Nakashima, Yi Ge
Life of this patent
Estimating the term…
Abstract
A transmission device includes: a receiving unit that receives an optical signal; an acquiring unit that acquires spectrum information from the optical signal, the spectrum information relating to a spectrum of the optical signal; and a narrowing calculating unit that calculates an index value for narrowing of a band of the optical signal by calculating a sampling timing error in accordance with the spectrum information, the sampling timing error being an error when a clock signal is extracted from the optical signal.
Claims14
A transmission device comprising:
- a receiving unit that receives an optical signal;
- an acquiring unit that acquires spectrum information from the optical signal, the spectrum information relating to a spectrum of the optical signal;
- and
- a narrowing calculating unit that calculates an index value for narrowing of a band of the optical signal by calculating a sampling timing error in accordance with the spectrum information, the sampling timing error being an error when a clock signal is extracted from the optical signal.
1 more element
A signal monitoring method comprising:
- receiving an optical signal;
- acquiring spectrum information from the optical signal, the spectrum information relating to a spectrum of the optical signal;
- and
- calculating an index value for narrowing of a band of the optical signal by calculating a sampling timing error in accordance with the spectrum information, the sampling timing error being an error when a clock signal is extracted from the optical signal.
1 more element
Dependencies are inferred from the claim text.