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G. P. KAUR1,* , GURMEET KAUR2, SANJAY SHARMA1
A novel QAM-PM modulation has been proposed for 112X10 Gbps system at 25 GHz spacing. At high data rates in narrow channel systems, FWM crosstalk limits the performance. Exploiting the phase dependence of FWM, we optimize the performance of a hybrid parametric amplifier using a phase shifted modified 4-QAM. Using the proposed system, a flat gain of more than 16 dB and gain ripple < 5 dB has been achieved without any gain flattening technique. The proposed modulation helps achieve higher spectral efficiency and a relatively flat gain in comparison to the conventional WDM system. Results show FWM suppression up to 5.8 dB..
High data rate, FWM crosstalk, suppression, Flat gain, Raman-FOPA.
G. P. KAUR, GURMEET KAUR, SANJAY SHARMA, A novel modulation technique for FWM suppression in broadband coherent DWDM systems, Optoelectronics and Advanced Materials - Rapid Communications, 12, 11-12, November-December 2018, pp.678-686 (2018).
Submitted at: Feb. 13, 2018
Accepted at: Nov. 29, 2018
Optoelectronics and Advanced Materials - Rapid Communications
(2022): 0.5 - 2022 Journal Citation Reports (Clarivate Analytics, 2023)
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