With the evolvement of high speed and long-distance data communication systems, conventional band erbium-doped fiber amplifiers (C-EDFAs) are getting more attention in recent times. Major advantage of the C-band EDFA is that it provides the user to realize a system with wide bandwidth of 40 nm. But, from the reported works, it is evident that for Gain enhancement in C-band using EDFA is reported with the use of multiple stages, multiple pumps, Gain flattening filters etc. However, these techniques suffered from high cost, complex techniques, and low performance. Here enhancement process was done through the narrowband Fiber Bragg Gratings (FBG) or fiber reflectors mirrors.
In this work, a conventional band erbium doped fiber amplifier is proposed with high gain and less noise figure by incorporating the two fiber bragg gratings (FBGs) for amplified spontaneous noise reinjection. Maximum ASE is emerged at 1565 nm for the at -55 dBm carrier powers. Maximum gain is found out to be 48.16 dB with noise figure of 5.29 dBm.
Fiber amplifiers are crucial and fast-growing field in the communication system. The study of this field show that the formulation procedures of lasers generation and amplifier amplification displays a problematical process due to the factors affecting and changing amplifier and laser significances in a dynamic way. Gain, noise figure, wavelength, power flatness and power output are directly affected by any element or parameter inside the amplifier configuration. The design parameters such as: erbium ions concentration, EDF length, isolators, wavelength division multiplexing (WDM) position, pump power position, circulators, pump directions, all of these elements and factors are affecting directly the amplifier output. EDFA is an amplifier that is best used because of its low loss and high gain. For communication, there are two windows 1530-1560nm(C-band) and 1560-1610nm (L-band).
TABLE OF CONTENTS
ACKNOWLEDGEMENT
ABSTRACT
LIST OF FIGURES
LIST OF TABLES
LIST OF ABBREVIATION
CHAPTER 1 INTRODUCTION
1.1 Introduction and Motivation
1.1.1 Advantages of Optical Fiber Communication
1.1.2 Optical Fiber Communication
1.2 Development of Multiplexing Techniques
1.2.1 Introduction of Multiplexing
1.2.2 Need of Multiplexing
1.2.3 Principle of Multiplexing
1.2.4 Types Of Multiplexing Techniques
(a) Time Division Multiplexing (TDM)
(b) Wavelength Division Multiplexing (WDM)
(c) Frequency Multiplexing (FDM)
1.3 Fiber Optic Nonlinear Effects
1.4 Introduction of Optical Amplifiers
1.4.1 Principle of Optical Amplifier
1.4.2 Amplifier Types
1.4.3 Semiconductor Optical Amplifier
1.4.4 Erbium Doped Fiber Amplifier
1.4.5 Motivation
1.4.6 Development Of L-Band EDFA Amplifier
1.4.7 Raman Amplifier
1.5 Comparison Between Optical Amplifiers
1.6 Need of Study
1.7 Scope of Dissertation
1.8 Structure of Dissertation
CHAPTER 2 LITERATURE SURVEY
CHAPTER 3 RESEARCH GAPS
3.1 Problem Formulation
3.2 Research Objectives
3.3 Research Methodology
CHAPTER 4 PROPOSED WORK
4.1 To Evaluate The C-Band Single Stage EDFA ASE Reinjection System with Single Pump
4.2Introduction
4.3 System Setup
CHAPTER 5 RESULT AND DISCUSSION
5.1 Effect of Different Physical Parameters of Edf on C-Band Edfa
5.2 Comparison of Proposed Work with Base Paper
CHAPTER 6 CONCLUSION AND FUTURE SCOPE
6.1 Conclusion
6.2 Future Scope
REFERENCE
- Citation du texte
- Mohammad Yusuf (Auteur), 2019, Fiber Optics Communication. Gain Enhancement of Erbium Doped Fiber Amplifier using Amplified Spontaneous Emission, Munich, GRIN Verlag, https://www.grin.com/document/920982
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