Assessment of Fiber Chromatic Dispersion Based on Elimination of Second-Order Harmonics in Optical OFDM Single Sideband Modulation Using Mach Zehnder Modulator

Patel, Dhananjay; Singh, Vinay Kumar; Dalal, Upena D.

doi:10.1080/01468030.2016.1195899

Cited by 12 publications

(2 citation statements)

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“…At this point there is already a lot of PON infrastructure interconnecting the central-station and the base-stations that is built of G.652D fibers [26]. Since such a fiber infrastructure is expensive to replace due to the necessary construction work, we expect to be dealing with issues related to chromatic dispersion, predominately the power penalty [27], which is typical of this type of fiber. The reason comes from different group velocities for the lower and upper sidebands in double-side-band modulation schemes, especially for the optical carrier wavelengths that are far from the zero-dispersion wavelength (1310 nm), e.g., 1550 nm.…”

Section: Discussion About the Implementation Of An Oeo In A 5g Ranmentioning

confidence: 99%

Opto-Electronics Review

Ilgaz,

Vuk Baliž,

Batagelj

2020

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This article proposes and examines a solution in which the base-station for the fifth generation radio access network is simplified by using a single millimeter-wave oscillator in the central-station and distributing its millimeter-wave signal to the base-stations. The system is designed in such a way that the low-phase-noise signal generated by an optoelectronic oscillator is transmitted from the central-station to multiple base-stations via a passive optical network infrastructure. A novel flexible approach with a single-loop optoelectronic oscillator at the transmitting end and a tunable dispersion-compensation module at the receiving end(s) is proposed to distribute a power-penalty-free millimeter-wave signal in the radio access network. Power-penalty-free signal transmission from 10 MHz up to 45 GHz with an optical length of 20 km is achieved by a combination of a tunable dispersioncompensation module and an optical delay line. In addition, measurements with a fixed modulation frequency of 39 GHz and discretely incrementing optical fiber lengths from 0.625 km to 20 km are shown. Finally, a preliminary idea for an automatically controlled feedback-loop tuning system is proposed as a further research entry point.

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Section: Discussion About the Implementation Of An Oeo In A 5g Ranmentioning

confidence: 99%

Opto-Electronics Review

Ilgaz,

Vuk Baliž,

Batagelj

2020

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“…Chromatic dispersion is a deterministic distortion given by the design of the optical fibre. It leads to a frequency dependence on the rate at which the phase of the wave propagates in space (optical phase velocity) and its effect on the transmitted optical signal basically scales quadratically with the data rate [17]. This frequency dependence of the phase can be easily identified by describing a pulse propagating through a monomode optical fibre in the frequency domain:…”

Section: Chromatic Dispersion (Cp)and Equalizationmentioning

confidence: 99%

Efficient Chromatic and Residual Dispersion Post compensation for Coherent Optical OFDM

2023

International Journal of Science and Engineering Applications

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In lieu of other impairments associated with fiber communication such as; fiber nonlinearity, fading, Intersymbol Interference (ISI), Intercarrier Interference (ICI), Chromatic Dispersion (CD) is compensated by Coherent Optical Orthogonal Frequency Division Multiplexing (CO-OFDM) technique. This technique divides the available bandwidth into five subbands, each modulated at a low data rate and postcompensated for the Chromatic Dispersion. Implementation of the Optical OFDM involves the use of Digital Signal Processing (DSP); Inverse Discrete Fourier Transform (IDFT) and Discrete Fourier Transform (DFT) both at the transmitter and receiver respectively. The Residual Dispersion left after CD is compensated by Constellation Adjustment Method (CAM). Simulation results using Optisystem show 107-Gb/s single-channel transmission over 1000-km Standard Single Mode Fiber (SSMF) with polarization division multiplexing Four Quadrature Amplitude Multiplexing (4-QAM) using 128 DFT, 82 subcarriers, 5 pilot subcarriers and 16 guard intervals. Equally, the simulation analysis were done at various transmission distances, OFDM systems show a better Min. BER and Max. Q factor than the conventional Non-Return to Zero (NRZ) systems.

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