Design of Broadband Passive Optical Network Incorporating Different Modulation Formats and Colorless ONUs

Sachdeva, Shippu; Gupta, Richa

doi:10.1088/1742-6596/2327/1/012038

Cited by 2 publications

(1 citation statement)

References 11 publications

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“…This result means that the amplitude of the optical signal waveform will increase with an increase in optical power. Additionally, using negative power at the input modulator leads to significant distortion [9] and non-linearity [10] in the resulting optical signal. Negative power at the input modulator causes undesired changes in the intensity pattern of the optical signal, resulting in significant noise and reduced optical signal quality [11].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Changes in Modulation Parameters on Optical Communication System

Laila,

Fadhilah,

Mutawakkillah

et al. 2023

J. Phys.: Conf. Ser.

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This study aims to analyze the NRZ-OOK modulation format in free-space optical communication. Simulations were conducted to examine the influence of the SpS parameter and optical signal power at the input modulator on the average power of the modulated optical signal. The research employed a computer simulation approach, where the optical signal was transmitted through an optical path without cables, enabling fast data transmission and longer distances compared to wired media. The method used specifically uses a machine learning-based application, Python. The simulation results indicate that higher SpS values result in a more accurate and smoother optical signal representation. Furthermore, an increase in the optical signal power at the input modulator increases the average power of the modulated optical signal. However, negative optical power values do not hold any relevant physical meaning. The magnitude of the Pi_dBm value also affects the optical signal spectrum, with higher optical power generating more robust frequency components. Graphs with negative optical power exhibit significant noise due to distortion and non-linearity. The findings of this study provide a better understanding of the influence of these parameters in the NRZ-OOK modulation format for free-space optical communication.

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Section: Introductionmentioning

confidence: 99%

Analysis of Changes in Modulation Parameters on Optical Communication System

Laila,

Fadhilah,

Mutawakkillah

et al. 2023

J. Phys.: Conf. Ser.

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Unequal channel spacing 8×5 Gbps optical system utilizing different signal representations

Abdulwahed

Mahdi

2023

Appl. Opt.

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Data representations are important to communication networks; they convert the data bits into a signal form, which affects the system capacity, maximum bit rate, transmission distance, and different linear and nonlinear impairments. In this paper, we propose non-return-to-zero (NRZ), chirped NRZ, duobinary, and duobinary return-to-zero (DRZ) data representations with eight dense wavelength division multiplexing channels for transmitting a 5 Gbps data rate through a 250 km fiber length. The results of the simulation design are calculated at different equal and unequal channel spacings, and the quality factor is measured over a wide range of optical power. For equal channel spacing, the DRZ has a preferable performance with a 28.40 quality factor at 18 dBm threshold power, and the chirped NRZ has a preferable performance with a 26.06 quality factor at 12 dBm threshold power. For unequal channel spacing, the DRZ has a 25.76 quality factor at 17 dBm threshold power, and the NRZ has a 25.06 quality factor at 10 dBm threshold power.

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Design of Broadband Passive Optical Network Incorporating Different Modulation Formats and Colorless ONUs

Cited by 2 publications

References 11 publications

Analysis of Changes in Modulation Parameters on Optical Communication System

Analysis of Changes in Modulation Parameters on Optical Communication System

Unequal channel spacing 8×5 Gbps optical system utilizing different signal representations

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