Performance analysis of NRZ, RZ, CRZ and CSRZ data formats in 10 Gb/s optical soliton transmission link under the impact of chirp and TOD

Malhotra, Jagjit Singh; Kumar, Manoj

doi:10.1016/j.ijleo.2008.08.010

Cited by 5 publications

(2 citation statements)

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“…The user's data are modulated to generate an RZ/CSRZ and MD-RZ optical signal, which then moves to optical CDMA encoding using a multi-diagonal (MD) sequence code. Interested readers may refer to [26][27][28] for more information about the generation of RZ, MDRZ, and CSRZ. The M optical CDMA users' data are combined by an optical combiner.…”

Section: Signal Generators and System Descriptionmentioning

confidence: 99%

“…DWDM has been analyzed under the influence of the FWM effect using different modulation formats such as carrier suppressed return to zero (CSRZ) [21], modified duobinary return to zero (MDRZ) [22], differential phase shift keying (DPSK) [23,24], and differential quadrature phase shift keying (DQPSK) [25]. All the modulation formats were proposed as alternative formats to return to zero (RZ) and non-return to zero (NRZ) [26][27][28].…”

Section: Introductionmentioning

confidence: 99%

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Performance Comparison of Different Modulation Formats for a 40 Gbps Hybrid Optical CDMA/DWDM System against ISI and FWM

2022

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This paper carries out a numerical simulation investigating three different modulation formats: carrier suppressed return to zero (CSRZ), modified duobinary return to zero (MDRZ) and return to zero (RZ). The purpose of this investigation is to find the optimum modulation format for the hybrid optical code division multiple accesses–dense wavelength division multiplexing (optical CDMA/DWDM) system with the implementation of an electro-optic phase modulator (EOPM) at a data rate of 40 Gbps per channel, with a transmitted power of 22 dBm and transmission distance of 105.075 km. The results revealed that CSRZ was superior to MDRZ and RZ and was more tolerant to optical fiber nonlinearity. Furthermore, unlike the DWDM systems, the performance of the proposed hybrid system based RZ format was better than the performance of MDRZ. Hence, the CSRZ modulation format is the best candidate for the optical CDMA/DWDM with EOPM module due to its high performance.

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Section: Signal Generators and System Descriptionmentioning

confidence: 99%