Influence of modulation formats performance of the combined modulation in WDM-PON system

Li, Li; Li, Hong-an; Zhang, Jijun; Zhang, Xiutai

doi:10.1016/j.ijleo.2013.04.034

Cited by 4 publications

(1 citation statement)

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“…These modulation formats normally require too large channel spacing, have a high optical signal to noise ratio (OSNR) requirement and generate significant nonlinear impairments [11]. Though conventional NRZ and RZ formats still have many applications in the field of optical networks and optical computing [12,13,14,15]. But to cope up with increased channel traffic NRZ and RZ are not the suitable modulation formats.…”

Section: Introductionmentioning

confidence: 99%

4 b/s/Hz spectrally efficient transmission for an 8 channel CSRZ modulated DWDM system

Vij

Sharma

2013

2013 4th International Conference on Computer and Communication Technology (ICCCT)

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The core of the global telecommunication network consists of wavelength division multiplexed (WDM) optical transmission systems. WDM is the technology of choice as it allows for a high spectral efficiency. We propose an effective way to counter the nonlinearities like Four Wave Mixing and Cross Phase Modulation to achieve the spectral efficiency of 4 b/s/Hz using CSRZ modulation format. We use the concept of non-uniform channel spacing and non-uniform power assignment between adjacent channels of the WDM system. We have simulated an 8 channel DWDM lightwave system with bit rate of 100 Gb/s and channel spacing of 25 GHz.

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Section: Introductionmentioning

confidence: 99%