Fiber Optics Communication. Gain Enhancement of Erbium Doped Fiber Amplifier using Amplified Spontaneous Emission

Tesis de Máster , 2019 , 55 Páginas

Planes para instructores: Computación / procesamiento de datos / IT / telecomunicaciones

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).

Inhaltsverzeichnis (Table of Contents)

• ACKNOWLEDGEMENT
• DEDICATION
• ABSTRACT
• CHAPTER 1: INTRODUCTION
• 1.1 Introduction to Optical Fiber Communication
• 1.2 Erbium Doped Fiber Amplifier (EDFA)
• 1.3 Types of Fiber Amplifiers
• 1.4 Working Principle of EDFA
• 1.5 EDFA Gain Characteristics
• 1.6 EDFA Noise Figure Characteristics
• 1.7 Applications of EDFA
• 1.8 Objectives of the Project
• CHAPTER 2: LITERATURE SURVEY
• 2.1 Review of Past Research on EDFA
• 2.2 Gain Enhancement Techniques in EDFA
• 2.3 ASE Reinjection Technique
• 2.4 Advantages of ASE Reinjection Technique
• 2.5 Challenges Associated with ASE Reinjection
• CHAPTER 3: DESIGN AND SIMULATION OF EDFA
• 3.1 Design Considerations for EDFA
• 3.2 Simulation Methodology
• 3.3 Simulation Results and Analysis
• CHAPTER 4: RESULTS AND DISCUSSION
• 4.1 Gain Characteristics with ASE Reinjection
• 4.2 Noise Figure Characteristics with ASE Reinjection
• 4.3 Comparison of Performance with and without ASE Reinjection
• 4.4 Discussion on the Impact of ASE Reinjection
• CHAPTER 5: CONCLUSION AND FUTURE SCOPE

Zielsetzung und Themenschwerpunkte (Objectives and Key Themes)

The dissertation aims to investigate the gain enhancement of erbium-doped fiber amplifiers (EDFAs) using the ASE reinjection technique. The study focuses on optimizing the EDFA performance by incorporating the ASE reinjection method and exploring its impact on key parameters such as gain and noise figure.

• Gain enhancement of EDFA
• ASE reinjection technique
• EDFA performance optimization
• Impact of ASE reinjection on gain and noise figure
• Design and simulation of EDFA with ASE reinjection

Zusammenfassung der Kapitel (Chapter Summaries)

• Chapter 1: Introduction provides a comprehensive overview of optical fiber communication, highlighting the significance of EDFA and exploring its working principles, gain characteristics, noise figure characteristics, and applications. The chapter concludes with the objectives of the project.
• Chapter 2: Literature Survey delves into previous research on EDFA, exploring different gain enhancement techniques and focusing on the ASE reinjection technique. This chapter discusses the advantages and challenges associated with this method.
• Chapter 3: Design and Simulation of EDFA focuses on the design considerations for EDFAs and the simulation methodology employed in the study. The chapter then presents the simulation results and analyzes the performance of the EDFA.
• Chapter 4: Results and Discussion presents the detailed results of the study, examining the gain and noise figure characteristics of the EDFA with ASE reinjection. It also compares the performance with and without the ASE reinjection method and discusses the impact of this technique.

Schlüsselwörter (Keywords)

Erbium-doped fiber amplifier (EDFA), gain enhancement, ASE reinjection, optical fiber communication, noise figure, simulation, design, optimization, performance analysis.

• Curso: M.Tech
• Autor: Mohammad Yusuf (Autor)
• Año de publicación: 2019
• Páginas: 55
• No. de catálogo: V920982
• ISBN (Ebook): 9783346302069
• ISBN (Libro): 9783346302076
• Idioma: Inglés
• Etiqueta: M.Tech Scholar