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Dispersion Compensating Photonic Crystal Fiber with Enhanced Properties Achieved by Modified Core Geometry  [cached]
Stanislav Kraus,Michal Lucki
Advances in Electrical and Electronic Engineering , 2012,
Abstract: A novel dispersion compensating fiber based on photonic crystal fiber has been designed and studied in terms of optimal dispersion and operating bandwidth. The investigation of dispersion characteristics with respect to change in hole diameter and pitch has been provided. Further optimization of the designed fiber has been applied to the achieved fiber’s properties in order to achieve a potentially easy-to-fabricate dispersion compensating fiber.
OPTIMIZATION OF FIBER BASED DISPERSION COMPENSATION IN RZ AND NRZ DATA MODULATION FORMATS  [PDF]
DIVYA DHAWAN,NEENA GUPTA
Journal of Engineering Science and Technology , 2011,
Abstract: In this paper, dispersion compensating fibers are used to compensate for the positive dispersion accumulated over the length of transmission fiber. Pre and post dispersion compensation schemes are employed for dispersion compensation. Modulation formats employed are RZ and NRZ. The performance of these systems is analyzed and then the optimization of these schemes is done by varying the input powers of single mode fibers and dispersion compensating fibers. The investigation is done on detailed simulative analysis.
Comparison of Fiber Based Dispersion Compensation in RZ and NRZ Data Modulation Formats
Chaya S,Ramjan Khatik
International Journal of Electronics Communication and Computer Technology , 2013,
Abstract: In this paper, dispersion compensating fibers are used to compensate for the positive dispersion accumulated over the length of transmission fiber. Pre and post dispersion compensation schemes are employed for dispersion compensation. Modulation formats employed are RZ and NRZ. The performance of these systems is analyzed and then the optimization of these schemes is done by varying the input powers of single mode fibers and dispersion compensating fibers. The investigation is done on detailed simulative analysis.
Fiber Bragg Grating And Phase Conjugator As Dispersion Compensator
Smita S. Dabhade,Savita Bhosale
International Journal of Advanced Electrical and Electronics Engineering , 2012,
Abstract: Among the promising advancements towards cost-effective long-haul transmission are the use of Fiber Bragg Gratings (FBGs) and Optical Phase Conjugator (OPC) as the dispersion compensating module (DCM). In this paper we discuss the the performance of FBG and OPC by comparing the results of the receivers. A 10 Gb/s Non Return To Zero (NRZ) signal is launched onto a 100 km long standard single mode fiber. Comparison of eye diagrams & Bit Error Rate (BER) and quality factor show a marked improvement in the link performance due to compensation of dispersion
A New Design of Borosilicate Crown Glass Photonic Crystal Fiber to Minimize the Dispersion  [PDF]
Shilpa Tiwari,Sunil Jalwaniya,Ajay Kumar Bairwa
International Journal of Soft Computing & Engineering , 2012,
Abstract: In this design we present a defected core photoniccrystal fiber using borosilicate crown glass .This paper shows thathow the central defected air hole ,controls the dispersion of aphotonic crystal fiber .For this purpose ,Finite difference timedomain (FDTD) method with the perfectly matched layers (PML)boundary conditions has been used to investigate the result. It ispossible to have high negative dispersion, by varying the size ofdefected core. It is also shown that borosilicate glass PCF providesmuch higher negative dispersion as compared to silica PCF of thesame structure, so such PCF have high potential to be used as adispersion compensating fiber in optical communication.
Dispersion modeling and analysis for multilayered open coaxial waveguides  [PDF]
Sven Nordebo,Gokhan Cinar,Stefan Gustafsson,Borje Nilsson
Physics , 2014,
Abstract: This paper presents a detailed modeling and analysis regarding the dispersion characteristics of multilayered open coaxial waveguides. The study is motivated by the need of improved modeling and an increased physical understanding about the wave propagation phenomena on very long power cables which has a potential industrial application with fault localization and monitoring. The electromagnetic model is based on a layer recursive computation of axial-symmetric fields in connection with a magnetic frill generator excitation that can be calibrated to the current measured at the input of the cable. The layer recursive formulation enables a stable and efficient numerical computation of the related dispersion functions as well as a detailed analysis regarding the analytic and asymptotic properties of the associated determinants. Modal contributions as well as the contribution from the associated branch-cut (non-discrete radiating modes) are defined and analyzed. Measurements and modeling of pulse propagation on an 82 km long HVDC power cable are presented as a concrete example. In this example, it is concluded that the contribution from the second TM mode as well as from the branch-cut is negligible for all practical purposes. However, it is also shown that for extremely long power cables the contribution from the branch-cut can in fact dominate over the quasi-TEM mode for some frequency intervals. The main contribution of this paper is to provide the necessary analysis tools for a quantitative study of these phenomena.
Guided Dispersion Characteristics of Subwavelength Nanoscale Plasmonic Coaxial Lines  [PDF]
Ki Young Kim
Physics , 2009,
Abstract: The guided dispersion characteristics of subwavelength nanoscale plasmonic coaxial lines are analyzed in detail over a wide optical frequency range below the plasma frequency with a varying gap between the inner and outer plasmonic conductors, providing important preliminary information for understanding the guided mode characteristics of subwavelength nanoscale coaxial lines with plasmonic metals. In particular, when the inner or outer radius is varied, guided modes with similar and dissimilar dispersive features are obtained and discussed. A brief comparison of the propagating modes for the present subwavelength plasmonic coaxial lines and those for a subwavelength plasmonic hole and wire is also made.
Symmetrical Dispersion Compensation For High Speed Optical Links
Ojuswini Arora,Amit Kumar Garg,Savita Punia
International Journal of Computer Science Issues , 2011,
Abstract: In this paper, the performance of high speed optical fiber based network is analysed by using dispersion compensating module (DCM). The optimal operating condition of the DCM is obtained by considering dispersion management configurations for the symmetrical system i.e Pre-compensation Post-compensation. The dispersion compensating fiber (DCF) is tested for a single span, single channel system operating at a speed of 10 Gb/s with a transmitting wavelength of 1550 nm, over 120 km single mode fibre by using the compensating fiber for 24 km,30km and 35Km. So far, most of the investigations for single mode fiber (SMF) transmission at high amplifier spacings in the order of 90 km to 120 km is focused on conventional Non Return to Zero(NRZ) format. The simulation results are validated by analysing the Q-factor and Bit error rate (BER) in the numerical simulator OptSim.
Symmetrical Dispersion Compensation For High Speed Optical Links  [PDF]
Ojuswini Arora,Dr. Amit kumar Garg,Savita Punia
Computer Science , 2011,
Abstract: In this paper, the performance of high speed optical fiber based network is analysed by using dispersion compensating module (DCM). The optimal operating condition of the DCM is obtained by considering dispersion management configurations for the symmetrical system i.e Pre-compensation & Post-compensation. The dispersion compensating fiber (DCF) is tested for a single span, single channel system operating at a speed of 10 Gb/s with a transmitting wavelength of 1550 nm, over 120 km single mode fibre by using the compensating fiber for 24 km,30km and 35Km. So far, most of the investigations for single mode fiber (SMF) transmission at high amplifier spacings in the order of 90 km to 120 km is focused on conventional Non Return to Zero(NRZ) format. The simulation results are validated by analysing the Q-factor and Bit error rate (BER) in the numerical simulator OptSim.
Two Means of Compensating Fiber Nonlinearity Using Optical Phase Conjugation  [PDF]
Haiqing Wei,David V. Plant
Physics , 2003,
Abstract: Two fiber lines may compensate each other for nonlinearity with the help of optical phase conjugation. The pair of fiber lines and the optical signals in them may be either mirror-symmetric or translationally symmetric about the conjugator.
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