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Stimulated Brillouin Scattering (SBS) is one kind of fiber nonlinearities represent the fundamental limiting mechanisms to the amount of data that can be transmitted on a single optic fiber. To achieve high output power and high threshold power we compensate this SBS effect using Cross Phase Modulation (XPM). XPM. is one kind of non-linear phase modulation which occurs in Wave length Division Multiplexing...
This paper proposes a novel structure of an 8 × 8 bidirectional optical cross connect (BOXC) which is designed using fiber Bragg gratings (FBGs) and optical circulators (OCs) for bidirectional wavelength-division-multiplexing (BWDM) network. The impact of coherent and incoherent crosstalk in a wavelength division multiplexing (WDM) network has been taken into account and Bit Error Rate (BER) is calculated...
Multilevel line coding scheme such as Novel optical line code is applied to combat the effect of cross phase modulation in a single segment dispersive optical link. The analysis is carried out for an intensity modulated direct detection WDM system with various linecoding techniques like NRZ and novel optical order-1 code. Results are numerically evaluated in terms of bit error rate and power penalty...
An analytical approach to incorporate the cross-phase modulation (XPM) and self-phase modulation (SPM) to the calculation of system bit-error rate (BER) in a multispan intensity-modulation direct-detection (IM-DD) WDM system is presented in this paper. The effects of three important link parameters such as pump and probe power and span length, on the system performance have been investigated in terms...
An analytical approach to determine absolute power transfer due to cross-phase modulation (XPM) and self-phase modulation (SPM) from their spectral characteristics in a multispan intensity-modulation direct-detection (IM-DD) optical system is presented in this paper. Here, dependency of XPM and SPM power transfer on different link parameters like pump power, channel spacing, link length and, bitrate...
Bidirectional optical cross connects (BOXCs) using a fiber Bragg gratings (FBGs) and optical circulators (OCs) have been considered for bidirectional WDM ring networks. Theoretical analysis is carried out to evaluate the performance of a bidirectional optical cross connects (BOXCs) in a wave length division multiplexing (WDM) transmission system in the presence of homodyne crosstalk due to fiber Bragg...
Optical performance monitoring (OPM) and optical network management (ONM) are essential in building a reliable and high quality of service system as the optical transmission system continues to evolve towards higher data rates, increased wavelength density and longer transmission distances. Traditional OPM primarily focused on achieving the desired functionality and prove to be insufficient for next...
We analytically evaluated the performance of an adjustable polarization mode dispersion compensator based on a 2-cm long high-birefringence linearly chirped fiber Bragg grating and simulated a 4-channel WDM/IMDD system using this compensator. The device can adjust differential group delay in a linearly continuous way without affecting wavelength outside the bandwidth. The various properties of the...
An analytical approach is developed to evaluate the impact of in-band and inter-band crosstalk on the bit error rate (BER) performance due to a multi-wavelength optical cross-connect (OXC) in a wavelength division multiplexing (WDM) network. BER performance and power penalty results are numerically evaluated at a bit rate of 10 Gb/s and the factors that degrade the network performance are identified...
In this paper, we present a theoretical analysis of the noise resulting from cross-phase modulation in an optical WDM transmission system. Analytical approach has been used to evaluate the bit error rate (BER) performance limitation of a WDM transmission system imposed by crosstalk due to cross-phase modulation and the influence of changing channel spacing for various fiber types on the (BER) and...
Cross-phase modulation (XPM) changes the state-of-polarization (SOP) of the channels through nonlinear polarization rotation and induces nonlinear time dependent phase shift for polarization components that leads to amplitude modulation of the propagating waves in a wavelength division multiplexing (WDM) system. Due to the presence of birefringence, the angle between the SOP changes randomly and as...
The bit error rate (BER) performance comparison of a wavelength division multiplexing (WDM) ring network in presence of four wave mixing (FWM) using repeated unequal spaced (RUS) and equal spaced (ES) scheme is reported taking into consideration of photo detector shot noise, beat noise components arising out of the beating of the signal with accumulated amplifierpsilas spontaneous emission (ASE) and...
We present a comprehensive theoretical study of four-wave mixing in optical fiber with exploring four fiber types. The four-wave mixing induced crosstalk noise is described by an expression that is based on NLS equation, and it describes the mutual channel interference optical losses in multi channel optical communications system. The corresponding system of equations has then been numerically integrated,...
We present a comprehensive theoretical study of cross-phase modulation in optical fiber with exploring four fiber types. The cross-phase modulation induced crosstalk noise is described by a system of coupled equations, which describes mutual channel interference optical losses in multi channel optical communications system. The corresponding system of equations has then been numerically integrated,...
Performance analysis is carried out to evaluate the bit error rate (BER) performance limitation of a WDM transmission system imposed by crosstalk due to stimulated Raman scattering. Power penalty evaluated at a BER of 10-9 shows a significant impact of Raman induced crosstalk on the number of wavelengths that can be transmitted. Penalty is higher at higher input power, higher number of channels and...
In this paper, crosstalk induced by cross phase modulation (XPM) and stimulated Raman scattering (SRS) in a multiwavelength subcarrier multiplexed transmission system is analyzed. Then combined effect of SRS and XPM induced crosstalk in the system performance is investigated. It is found that SRS dominates at lower modulation frequency with large channel spacing while XPM at higher modulation frequency...
A transmission performance study is carried out for an all-optical multi-wavelength metropolitan optical ring network (MON). Effect of using a wavelength shift keying (WSK) scheme is analyzed and compared to that of the conventional on off keying system (OOK) in respect of four wave mixing (FWM) cross talk. The performance results are evaluated at a bit rate of 10Gb/s taking into considerations the...
Aa analytical approach is presented for modeling crosstalk and to evaluate the bit error rate (BER) performance in a wavelength division-multiplexing (WDM) network for link with optical cross connect (OXC) without wavelength converter. Factors that affect the magnitude of crosstalk in the OXC are investigated and parameters that play important role in determining magnitude of crosstalk and BER are...
An analytical approach is presented for modelling crosstalk and to evaluate the bit error rate (BER) performance in a wavelength division multiplexing (WDM) network for link with optical cross connect (OXC). Factors that affect the magnitude of crosstalk in the OXC are investigated and identified. The effects of OXC induced crosstalk on the BER performance is evaluated at a bit rate of 10 Gb/s by...
A transmission performance study is carried out for a multi-hop inter-city optical ring network with short-period dispersion managed fiber (SPDMF) taking into consideration the effect of cross-phase modulation cross-talk introduced at each node. The performance results evaluated at a bit rate of 10 Gb/s show that the bit error rate (BER) performance is limited severely by the cross-phase modulation...
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