27 May 2015 Optical signal-to-noise ratio monitoring based on four-wave mixing
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The transmission rates of the next generation intelligent optical networks are high, and the use of dense wavelength division multiplexing and a reconfigurable optical add-drop multiplexer makes the traditional optical signal-to-noise ratio (OSNR) monitoring techniques unsuitable. Hence, we investigated the OSNR monitoring method based on the nonlinear effect of four-wave mixing (FWM), which applies to the next generation intelligent optical networks. Due to FWM in a highly nonlinear fiber, a converted wave is generated and its power is dependent on the OSNR of the input signal. Two scenarios are studied, single-pump and orthogonal-polarized dual-pump. Under the condition of the given fiber length and the appropriate pump power, the monitoring ranges of OSNR could be extended to 23 and 30 dB for single-pump and orthogonal-polarized dual-pump, respectively.
© 2015 Society of Photo-Optical Instrumentation Engineers (SPIE)
Mengchi Chen, Juanjuan Yang, Na Zhang, Shanhong You, "Optical signal-to-noise ratio monitoring based on four-wave mixing," Optical Engineering 54(5), 056109 (27 May 2015). https://doi.org/10.1117/1.OE.54.5.056109 . Submission:

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