Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Yin Zhang0
Qingyan Yue0
Shuang Chen0
Yan Chen0
Fei Liang0
Hehui Wu0
Hui Xie0
Liping Sun0
...
Date of Patent
February 12, 2019
Patent Application Number
15667794
Date Filed
August 3, 2017
Patent Citations Received
Patent Primary Examiner
Patent abstract
Embodiments of the present invention relate to method and device for measuring optical signal-to-noise ratio (OSNR). A method for measuring an OSNR of a signal of interest may comprise: obtaining spectrum of the signal of interest, the spectrum including power spectrum density distribution of the signal of interest in a channel bandwidth B; obtaining spectrum of a comparative signal that has the same spectrum characteristics as but different OSNR than the signal of interest, the spectrum including power spectrum density distribution of the comparative signal in the channel bandwidth B; and calculating the OSNR of the signal of interest by using the spectrum of the signal of interest and the spectrum of a comparative signal.
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