Fiber-Optic Communications

Agrawal, Govind P.

doi:10.1016/b978-012045144-9/50007-2

Cited by 30 publications

(64 citation statements)

References 160 publications

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“…The main OCDMA and WDM systems have been of wide spread implementation for local and metro access network [13,14]. This is because OCDMA systems provide users both simultaneous and asynchronous access to networks with high security [15,6] and WDM systems supply a relatively high transmission capacity [16].…”

Section: Multiple-weight Two-dimensional Codesmentioning

confidence: 99%

Optimized Designing of Optical Local Area Network With Optical Code Division Multiple Access Incorporating Forward Error Correction

Hamzah¹,

Kumar²

2014

IOSR-JECE

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Section: Multiple-weight Two-dimensional Codesmentioning

confidence: 99%

Optimized Designing of Optical Local Area Network With Optical Code Division Multiple Access Incorporating Forward Error Correction

Hamzah¹,

Kumar²

2014

IOSR-JECE

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“…The system may have additional components such as fiber amplifiers for regenerating the optical power or dispersion compensators for counteracting the effects of dispersion. The difficulties of the implementation of the optical systems vary from noncomplex (i.e., local area network) to extremely complex and costly (i.e., long haul telephone or cable TV network) [16]. The idea of using a glass fiber to transmit information light over long distances was first introduced by Kao and Hockman in 1966 [12].…”

Section: A Optical Communication Systems (Ocs) Reviewmentioning

confidence: 99%

Performance Analysis of Optical Communication Systems using OFDM by Employing QPSK Modulation

K.¹

2015

IJRITCC

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-The high data rate along with good Quality of Service (QoS) requirements of Next Generation Network (NGN) can be fulfilled by using the optical fiber communication networks. At high data rate, dispersion will be the limiting factor which needs to be suitably compensated. Many efforts have been drawn to the development of dispersion compensating devices / techniques to recover or prevent the broadening signal pulse. The Orthogonal Frequency Division Multiplexing (OFDM) is very attractive because of its capacity to handle the dispersion causing pulse broadening at the receiver without changing the internal architecture of the system. Thus Integration of Optical Communication Systems with OFDM system appears to be the most suitable technology for the NGN. The work presented here consist of the design, simulation and performance evaluation for the dispersion compensation in optical fiber communication systems using OFDM for high data rate transmission by utilizing the capacity of the optical fiber channel efficiently. The system performance has been analyzed and compared it with the single carrier optical communication systems. Various simulation results show that systems using OFDM can give dynamically tunable compensation of the dispersion by changing the various parameters of the OFDM systems. The work presented here reveals that the use of OFDM can be used to construct cost effective, high data capacity optical communication systems with extended transmission distance by employing dispersion compensation. These systems have the ability of supporting data rate up to 40 Gbps per optical channel and are appropriate for implementation as upgraded long haul high data rate optical Communication systems.

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“…Since during the measurements we used oversampling to ensure high resolution, for data post-processing a down-sampling was adopted by selecting the points that maximize the Q-factor (and dually minimize the bit error rate (BER)). The BER defined in terms of the Q-factor can be expressed by [1,30]:…”

Section: Theoretical Background For Data Analysismentioning

confidence: 99%

Indoor free space optics link under the weak turbulence regime: measurements and model validation

Pernice¹,

Andò²,

Cardinale³

et al. 2015

IET Communications

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Institution of Engineering and Technology (IET)Pernice Abstract:In this paper, we present the measurements performed on a free space optics (FSO) communications link using an indoor atmospheric chamber. In particular, we have generated several different optical turbulence conditions, demonstrating how even the weak turbulence regime can strongly affect the FSO link performance. We have carried out an in-depth analysis of the data collected during the measurements, and calculated the turbulence strength (i.e. scintillation index and Rytov variance) and the important performance metrics (i.e., the Q-factor and bit error rate) to evaluate the FSO link quality.Moreover, we have tested, for the first time, an appositely developed temporally-correlated Gamma-Gamma channel model to generate the temporal irradiance fluctuations observed at the receiver. This has been accomplished by using a complete analysis tool that enables us to fully simulate the experimental FSO link. Finally, we compare the generated time-series with the collected experimental data, showing a good agreement and thus proving the effectiveness of our model.

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Fiber-Optic Communications

Cited by 30 publications

References 160 publications

Optimized Designing of Optical Local Area Network With Optical Code Division Multiple Access Incorporating Forward Error Correction

Optimized Designing of Optical Local Area Network With Optical Code Division Multiple Access Incorporating Forward Error Correction

Performance Analysis of Optical Communication Systems using OFDM by Employing QPSK Modulation

Indoor free space optics link under the weak turbulence regime: measurements and model validation

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