Duobinary Modulation Format in Optical Communication Systems

Šalík, Pavol; Čertík, Filip; Róka, Rastislav

doi:10.13189/asp.2015.010101

Cited by 14 publications

(2 citation statements)

References 5 publications

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“…The signal is sent out to the differential encoder, where is mapped on values [-1, 0, 1], where "-1" introduces bit with the amplitude 1 and phase -π. More detailed description of the Duobinary modulation scheme is presented in [10].…”

Section: The Duobinary Keyingmentioning

confidence: 99%

Impact of Environmental Influences on Multilevel Modulation Formats at the Signal Transmission in the Optical Transmission Medium

Róka

Šalík

2022

Int. j. commun. netw. inf. secur.

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This paper is devoted to the analysis of environmental influences in the optical transmission medium and their impacts on multilevel modulation formats. An attention is focused on main features and characteristics of environmental negative influences of optical fibers. Consequently, principles for appropriate multilevel modulation formats are introduced together with block schemes representing their main functionalities. The created Simulink model for technologies and communications is verified for real conditions in the optical transmission medium. It can allow executing requested analysis for environmental influences on advanced multilevel modulation formats at the signal transmission. Finally, a comparison of considered multilevel modulations is introduced, using constellation diagrams, signal characteristics, eye diagrams and waterfall curves of individual signals.

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Section: The Duobinary Keyingmentioning

confidence: 99%

Impact of Environmental Influences on Multilevel Modulation Formats at the Signal Transmission in the Optical Transmission Medium

Róka

Šalík

2022

Int. j. commun. netw. inf. secur.

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“…With the reduced spectrum width, the pulses are unaffected to the distorting effects. This depends on the spectrum width; the pulses are less affected if the spectrum width is smaller [28]. The transmitted signal

s ()(, t) = \sum_{n = - normal∞}^{\infty} C_{n} b ()(, t - n t)

Optical duobinary communication is accomplished by 100% over‐driving an MZM through the duobinary encoded sequence.…”

Section: Mathematical Model Of Duobinary Modulation Schemementioning

confidence: 99%

Security improved duobinary optical communication scheme through bio‐inspired chaos masking scheme

Ravindran

Nithiyanantham²

2020

IET Optoelectronics

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Modified duobinary modulation of optical signals generated by silicon‐based microring resonator

Amiri

Addanki

Sampathkumar

et al. 2019

Micro & Optical Tech Letters

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Multi-wavelength can be generated using microring resonator systems. To transmit these optical signals over a long distance optical communication link, a modulation technique is required. In this research, the modified duobinary modulation technique has been utilized to modulate the generated multi-wavelength from the microring resonator system. We have de-multiplexed the multi-wavelength to single frequencies which undergo a modulation and transmission over a fiber link with a length of 50 km. The performance of the proposed pulse code modulation technique has been analyzed by presenting the quality factor versus the optical input power, eye diagram, and received power for different optical fiber length. The results show the high-quality signals received with a high-quality factor and to the best of our knowledge, no analysis has been reported on the microring resonator system using the modified duobinary modulation technique. The results show a maximum quality factor of 12.556 which can be obtained for the input power of −10.11 dBm with the optical fiber length of 50 km, where the bit error rate (BER) was 1.29 × 10 −27 . The quality factor drops to lower values for the longer optical fiber length linearly as it has the lowest value of 5.023 for optical fiber length of 70 km. The analysis has been performed over system parameter optimizations.

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Duobinary Modulation Format in Optical Communication Systems

Cited by 14 publications

References 5 publications

Impact of Environmental Influences on Multilevel Modulation Formats at the Signal Transmission in the Optical Transmission Medium

Impact of Environmental Influences on Multilevel Modulation Formats at the Signal Transmission in the Optical Transmission Medium

Security improved duobinary optical communication scheme through bio‐inspired chaos masking scheme

Modified duobinary modulation of optical signals generated by silicon‐based microring resonator

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