Amplification of Wavelength Division Multiplexing in Multi-Core Erbium Doped Fiber Amplifiers (original) (raw)

Serial topology of wide-band erbium-doped fiber amplifier for WDM applications

IEEE Photonics Technology Letters, 2000

We analyze the recently proposed serial topology of wide-band erbium-doped fiber amplifier (EDFA) covering both the C-and L-bands and compare it with the parallel configuration of C-band and L-band amplifiers. The analysis is based on an application of a comprehensive large-signal numerical model, which takes into consideration propagation of wavelength-division multiplexing (WDM) signals, bidirectional pump, and both the downstream and upstream ASE power spectral components. We have found that in multiwavelength regime the new topology can provide output power of 3 dBm/channel for 32 C-band and 40 L-band, 0.8-nm-spaced signals with reasonable pump powers to the first and the second stage. In comparison with the usual parallel configuration of C-band and L-band EDFAs, this topology saves about 20% of overall pump power, 10% of the necessary length of erbium-doped fiber (EDF) and achieves lower noise figure for L-band signals.

A Novel Gain-Clamped Erbium Doped Fiber Amplifier for Wavelength Division Multiplexed Systems

Optical Review, 2000

Amplification of multiwavelength signals by an erbium-doped fiber amplifier (EDFA) is becoming critical, due to the proliferation of wavelength division multiplexed systems. However, when a standard EDFA is employed, the dissimilarities among the signals' gain may prove unacceptable. Thus, a novel gain-clamped EDFA is proposed here to tackle the issue of gain tilt. The suitability of the configuration is then investigated through a numerical model, which is developed based on the standard EDFA and fiber laser models.

Gain-clamped erbium-doped fibre amplifier for wavelength division multiplexed systems

Journal of Modern Optics, 2000

Amplification of multiwavelength signals by an erbium-doped fibre amplifier (EDFA) is becoming critical, due to the proliferation of wavelength division multiplexed systems. However, when a standard EDFA is employed, dissimilarities between signal gains may prove unacceptable. Thus, a novel gain-clamped EDFA is proposed here to tackle the issue of gain tilt, a measure of maximum gain difference. The suitability of the configuration is then investigated through a numerical model, which is developed based on the standard EDFA and fibre laser models.

Erbium-doped multi-element fiber amplifiers for space-division multiplexing operations

Erbium-doped multi-element fiber (MEF) amplifiers have been fabricated to simultaneously amplify multiple transmission channels. MEF devices comprise of multiple single-core fibers (elements) combined in a common coating, with each element working as a single fiber in isolation. MEFs containing 3-elements and 7-elements have been fabricated and characterized. Each element of the fabricated MEFs provides nearly 32 dB of gain with a noise figure of <5 dB for an input signal level of −23 dBm at 1530 nm. Different permutations of element pairs within the MEFs were checked for crosstalk and none was detected, confirming the simultaneous multi-channel amplification capabilities of MEFs.

Performance of erbium-doped fiber amplifier cascades in WDM multiple access lightwave networks

IEEE Photonics Technology Letters, 2000

A simple method to optimize individual EDFA performance parameters for multiwavelenght operation in an amplifier cascade is presented. The pump power, pump wavelenght, Erbium-doped fiber lenght, and input signal levels and their spectral range are each optimized. We find that 980-nm pumping, together with an optimum amplifier lenght of 9 m, provides adequate performance for six 10 Gb/s WDM channels to be transmitted through a cascade of 27 amplifiers, allowing atotal system gain of more than 350 dB without requiring gain equalization methods.

IJERT-Optimization Of Gain And Bit Error Rate Of An Erbium Doped Fiber Amplifier For Wdm System

International Journal of Engineering Research and Technology (IJERT), 2013

https://www.ijert.org/optimization-of-gain-and-bit-error-rate-of-an-erbium-doped-fiber-amplifier-for-wdm-system https://www.ijert.org/optimization-of-gain-and-bit-error-rate-of-an-erbium-doped-fiber-amplifier-for-wdm-system The Gain flattened EDFA plays a major role for modern WDM optical application. Use of a Low Pass Cosine Roll Off Filter and tuning numerical aperture and fiber length for a specific pump power optimizes the gain flattening. The design is simulated using OPTISYSTEM software. The gains are flattened within 29.61dB-30.401dB from 1546nm-1558nm band of wavelength with noise figure (NF) < 5.5dB and bit error rate (BER) <10-36 for 16 channel simultaneous amplification in a single stage EDFA.

Realization of a Long-haul Optical Link with Erbium Doped Fiber Amplifier

Carpathian Journal of Electronic and Computer Engineering

The need for high capacity and bandwidth in broadband communication systems increased rapidly in a few past years. Optical fiber is now the major transmission medium for fast and reliable communication replacing the old copper-based connections. However, with the deployment of optical networks, number of problems arise. The main problem of optical networks is the amplification in the long-distance transmission. Erbium doped fiber amplifier (EDFA) is the leading technology in the field of optical amplifiers. It uses erbium doped fiber to amplify optical signal. The importance of amplification in optical domain is relevant in long-haul and high-speed transmission systems. In this paper the study of the EDFA is presented. Based on an analytical study, the simulation model of the EDFA is created. The main aim is to determine the optimal parameters of the EDFA for a long-haul 16-channel DWDM (Dense Wavelength Division Multiplexing) system. The performance of the proposed DWDM system is m...

Cladding-pumped erbium-doped multicore fiber amplifier

Optics Express, 2012

A cladding pumped multicore erbium-doped fiber amplifier for simultaneous amplification of 6 channels is demonstrated. Peak gain over 32 dB has been obtained at a wavelength of 1560 nm and the bandwidth measured at 20-dB gain was about 35 nm. Numerical modeling of cladding pumped multicore erbium-doped amplifier was also performed to study the properties of the amplifier. The results of experiment and simulation are found to be in good agreement.

Optimum signal wavelength for a distributed erbium-doped fiber amplifier

IEEE Photonics Technology Letters, 1992

Theoretical analysis of a 100-km-long transparent germanosilicate distributed erbium-doped optical fiber has been carried out. It is shown that the optimum signal wavelength is 1.554 mu m both considering the noise performance and the necessary pump power for achieving unity gain when the distributed erbium-doped fibers are pumped at 1.48 mu m.>

Detailed design analysis of erbium-doped fiber amplifiers

Photonics Technology …, 1991

INTRODUCTION HE erbium-doped fiber amplifier has much potential as a T high-gain optical amplifier in optical communication sys- ... MODEL The model for the EDFA, used in the analysis, assumes that the Er3+-ions acts as a 3-level laser system when pump-ing at ...