Comparative Performance of Modulation Formats using RAMAN-EDFA Hybrid Optical Amplifier in Fiber Optic Communication System

2017 ◽  
Vol 38 (2) ◽  
Author(s):  
Garima Arora ◽  
Sanjeev Dewra
Keyword(s):  
Wavelength Division Multiplexing ◽  
Fiber Amplifier ◽  
Optical Amplifier ◽  
Comparative Performance ◽  
Modulation Formats ◽  
Erbium Doped Fiber Amplifier ◽  
Wavelength Division ◽  
Transmission Length ◽  
Fiber Optic Communication ◽  
Optic Communication

AbstractThis paper presents the comparison of various modulation formats for 64×10 Gbps dense wavelength division multiplexing system using Raman–erbium-doped fiber amplifier optical amplifier with 100 GHz interval. We evaluate the suitability of various data formats like return-to-zero (RZ) raised cosine (RC), RZ rectangular (Rect), non-return-to-zero (NRZ) RC and NRZ-Rect for an optical transmission link. The results have been carried out by evaluating the value of quality factor, bit error rate (BER) and average opening of an eye. It is found that using NRZ-Rect data format, the signal can travel up to transmission length of 234 km with acceptable BER (1.10e

Investigations of Different Amplifiers in 16 × 40 Gb/S WDM System

2019 ◽  
Vol 40 (4) ◽  
pp. 341-346
Author(s):  
Kulwinder Singh ◽  
Karan Goel ◽  
Kamaljit Singh Bhatia ◽  
Hardeep Singh Ryait
Keyword(s):  
Wavelength Division Multiplexing ◽  
Fiber Amplifier ◽  
Optical Amplifier ◽  
Fiber Amplifiers ◽  
Erbium Doped Fiber Amplifier ◽  
Wavelength Division ◽  
Transmission Distance ◽  
Erbium Doped ◽  
Eye Opening ◽  
Eye Closure

Abstract Different fiber amplifiers such as semiconductor optical amplifier, erbium-doped fiber amplifier and erbium ytterbium-co-doped fiber amplifier (EYCDFA) are investigated for 16×40 GB/s wavelength division multiplexing system. Various performance parameters including Q-factor, bit error rate, jitter, eye opening and eye closure are observed and analyzed. It is reported that EYCDFA is a better choice among the tested amplifiers. The proposed system is also investigated in terms of transmission distance.

Performance Evaluation of Proposed WDM Optical Link Using EDFA and FBG Combination

2019 ◽  
Vol 40 (2) ◽  
pp. 101-107 ◽  
Author(s):  
Deepti Ahlawat ◽  
Payal Arora ◽  
Suresh Kumar
Keyword(s):  
Wavelength Division Multiplexing ◽  
Chromatic Dispersion ◽  
Fiber Amplifier ◽  
Q Factor ◽  
Wavelength Band ◽  
Modulation Formats ◽  
Erbium Doped Fiber Amplifier ◽  
Wavelength Division ◽  
Modulation Format ◽  
Erbium Doped

Abstract Analysis of wavelength division multiplexing (WDM) system utilizing erbium-doped fiber amplifier (EDFA) has been carried out by many researchers. In this paper, the performance analysis of 8-channel WDM system utilizing EDFA and fiber Bragg grating (FBG) combination is carried out in a wavelength band 1546–1552 nm at 10 Gbps. The performance of three apodization functions (Uniform, Gaussian and Tanh) of FBG is compared using return-to-zero (RZ) and non-return-to-zero modulation formats at fiber lengths 50, 60, 70 and 80 km. Also, the performance of FBG is compared for both aspects: with chirp and without chirp for grating lengths 5–10 mm. The Gaussian apodized and linearly chirped FBG outperformed the other two in compensating chromatic dispersion. Optimum values of Q-factor are also obtained using linearly chirped FBG with RZ modulation format at 10 mm of grating length.

scholarly journals Performance Evaluation of Different Optical Amplifiers in Spectrum Sliced Free Space Optical Link

2019 ◽  
Vol 41 (1) ◽  
pp. 9-14 ◽  
Author(s):  
Aditi Thakur ◽  
Shaina Nagpal
Keyword(s):  
Wavelength Division Multiplexing ◽  
Free Space ◽  
High Speed ◽  
Optical Amplifiers ◽  
Fiber Amplifier ◽  
Optical Amplifier ◽  
Free Space Optical ◽  
Erbium Doped Fiber Amplifier ◽  
Wavelength Division ◽  
Space Optics

Abstract Free space optics (FSO) is well-competent and premier technology to cater the high speed services in different geographical areas such as hilly areas and inter building network. In this paper, we successfully demonstrated the spectrum sliced wavelength division multiplexed FSO system. In order to make system bandwidth efficient, frequency spacing of 75 GHz is taken among the wavelength division multiplexing (WDM) channels. Carrier spectrum broadening is achieved for spectrum slicing through the nonlinearity called self-phase modulation. Moreover, requirement of multiple laser sources is eliminated. However, in conventional WDM systems, n numbers of lasers are needed to generate n WDM channels. To strengthen the signal in this FSO system, three optical amplifiers are scrutinized such as erbium-doped fiber amplifier (EDFA), semiconductor optical amplifier (SOA) and Raman amplifier in terms of Q-factor and bit error rate (BER). Results revealed that EDFA is best amplifier in proposed SS-WDM-FSO system.

Gain performance of cascaded and hybrid semiconductor optical amplifier in CWDM system

2014 ◽  
Vol 23 (01) ◽  
pp. 1450007 ◽  
Author(s):  
Khadijah Ismail ◽  
P. Susthitha Menon ◽  
Sahbudin Shaari ◽  
Abang Annuar Ehsan ◽  
Hesham Bakarman ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Wavelength Division Multiplexing ◽  
Semiconductor Optical Amplifier ◽  
Optical Fiber Communication ◽  
Fiber Amplifier ◽  
Optical Amplifier ◽  
Gain Bandwidth ◽  
Erbium Doped Fiber Amplifier ◽  
Fiber Communication ◽  
Wavelength Division

The incorporation of cascaded and hybrid-type optical amplifiers into the optical fiber link is advantageous for the purpose of achieving wide gain bandwidth of multi-wavelength coarse wavelength division multiplexing (CWDM) systems. Different amplifiers whose operating gain region differ from each other are connected in cascade, thus providing better gain performance as the overall gain is combined and flattened over a larger spectrum. In this paper, the effect of the crossover of the uniform gain of the semiconductor optical amplifier (SOA) and the nonuniform gain of erbium-doped fiber amplifier (EDFA) is analyzed using an in-line cascaded SOA-SOA and an in-line hybrid SOA-EDFA configuration in the amplification of an 8-channels CWDM system obtained from the simulation using Optisystem software. It was observed that the cascaded SOA-SOA produces higher gain of 25 dB and wider gain bandwidth of 60 nm compared to the hybrid SOA-EDFA configuration with maximum gain of only 24 dB and 40 nm bandwidth. In addition, better bit-error-rate (BER) performance which is within the typical values in optical fiber communication is also achieved from the cascaded SOA topology. Wider gain bandwidth obtained with the SOA-SOA configuration would permit the transmission of video application at 1551 nm in the proposed Ethernet CWDM system transmitted at 100 Mb/s data rates.

Analysis of SDWDM Ring Network and Enhancement Using Different Hybrid Optical Amplifiers and Modulation Formats

2016 ◽  
Vol 37 (3) ◽  
Author(s):  
Vineet Anand ◽  
Anurag Sharma
Keyword(s):  
Wavelength Division Multiplexing ◽  
Performance Enhancement ◽  
Fiber Amplifier ◽  
Optical Amplifier ◽  
Ring Network ◽  
Channel Spacing ◽  
Modulation Formats ◽  
Erbium Doped Fiber Amplifier ◽  
Eye Diagram ◽  
Modulation Format

AbstractIn this paper, performance enhancement of super-dense wavelength division multiplexing (SDWDM) optical add–drop multiplexer optical ring network for six nodes, 50 wavelengths having channel spacing of 0.2 nm for 300 km unidirectional nonlinear fiber is successfully demonstrated. The performance of the designed system is enhanced by comparing different modulation formats (non-return to zero (NRZ), return to zero (RZ), soliton, chirped return to zero (CRZ), carrier-suppressed RZ (CSRZ)) and hybrid amplifiers (Erbium-doped fiber amplifier (EDFA)–EDFA, semiconductor optical amplifier (SOA)–SOA, SOA, EDFA, EDFA–SOA) on the basis of eye diagram and bit error rate (BER). It has been observed that CRZ modulation format and EDFA-SOA shows the best results. It has been reported that EDFA-SOA/CRZ modulation format can achieve BER as better as e-13, which gives best performance. The effect of channel spacing on SDWDM system and performance degradation due to crosstalk is also evaluated.

scholarly journals Applicability of Modulation Schemes for WDM High Speed Networks using Hybrid Optical Amplifiers

2019 ◽  
Vol 8 (9S) ◽  
pp. 243-248
Keyword(s):  
Wavelength Division Multiplexing ◽  
Network Architecture ◽  
High Speed ◽  
Fiber Amplifier ◽  
Optical Amplifier ◽  
Erbium Doped Fiber Amplifier ◽  
Wavelength Division ◽  
High Speed Networks ◽  
Hybrid Optical Amplifier ◽  
Modulation Schemes

High speed networks face several challenges in order to meet desired Quality of Service (QOS). In order to increase network speed with significant reduction in Bit Error Rate (BER), new design techniques have to be deployed in high speed networks. In this paper, basics of high speed networks along with Dense Wavelength Division Multiplexing(DWDM) network issues and challenges have been discussed. Modulation schemes and amplifier configurations are also summarized. Investigations on applicability of modulation schemes for DWDM network architecture have been performed with various hybrid optical amplifier configurations. The link configuration consists of 56 channels at speed of 15Gbps.It is observed that Non Return to Zero (NRZ) scheme gives better performance in terms of Quality-factor (Q-f) and BER. The network parameters are further improved using various hybrid optical amplifier configurations. It is observed that NRZ scheme with Erbium Doped Fiber Amplifier (EDFA) hybrid amplifier configuration has improved the quality factorof system as compared to other hybrid amplifier configurations

Performance Analysis of FBG WDM System using Different Optical Amplifiers

2018 ◽  
Vol 0 (0) ◽  
Author(s):  
Suraj Jain ◽  
Chakresh Kumar
Keyword(s):  
Wavelength Division Multiplexing ◽  
Optical Amplifiers ◽  
Fiber Amplifier ◽  
Optical Amplifier ◽  
Q Factor ◽  
Erbium Doped Fiber Amplifier ◽  
Wavelength Division ◽  
Raman Amplifier ◽  
Erbium Doped ◽  
Channel Wavelength

AbstractThis paper aims to analyze the performance of FBG 60 channel wavelength-division multiplexing system using different optical amplifiers namely RAMAN, erbium-doped fiber amplifier (EDFA) and semiconductor optical amplifier (SOA) separately at 10 Gbps data rate up to a fiber length of 280 km. Based upon the results, the performance of the three amplifiers has been compared on the basis of multiple performance parameters. It is seen that EDFA simulates good results in terms of bit error rate (BER) up to a fiber distance of approximately 80 km and Q factor up to a distance of approximately 90 km among all the three amplifiers. However, power received is least in EDFA. RAMAN amplifier provides a better Q factor after the fiber distance of approximately 90 km and a better BER after the fiber distance of approximately 80 km compared to the other three amplifiers. SOA shows better results in terms of power received up to a fiber distance of approximately 100 km. RAMAN amplifier provides better output power after a distance of 100 km. Eye diagrams and power spectrums of the network with different optical amplifiers has also been analyzed.

Link Power Level Improvements in an Amplified 8-Channel CWDM System with Hybrid EDFA-SOA Pre-Amplifier

2015 ◽  
Vol 799-800 ◽  
pp. 1361-1365
Author(s):  
Khadijah Ismail ◽  
P.S. Menon ◽  
Sahbudin Shaari ◽  
Abang Annuar Ehsan ◽  
Norhana Arsad ◽  
...  
Keyword(s):  
Wavelength Division Multiplexing ◽  
Power Level ◽  
Fiber Amplifier ◽  
Optical Amplifier ◽  
Erbium Doped Fiber Amplifier ◽  
Wavelength Division ◽  
Erbium Doped ◽  
Gain Measurement ◽  
Transmission Link ◽  
Coarse Wavelength Division Multiplexing

The link power improvement in a coarse wavelength division multiplexing (CWDM) system which is transmitted using a hybrid erbium-doped fiber amplifier (EDFA) and semiconductor optical amplifier (SOA) scheme as a pre-amplifier, is discussed. The network is designed for amplifying 8 CWDM channels ranging from 1471 nm to 1611 nm. The hybrid amplifiers’ gain measurement is obtained from experimental work with gain peak at 22 dB which is observed at 1531 nm. The amplifiers also caused power increment of 5.06 dB in the transmission link before the signal is split individually at the receiving end. Based on the higher gain peaks and power spectrum at 1531 nm and 1551 nm wavelengths, the proposed amplified link would be useful for the transmission of video applications.

DWDM Transmission with LEAF and RDF Structure in 40 Gb/s Single MZM with RZ-DPSK Modulation

2017 ◽  
Vol 38 (1) ◽  
Author(s):  
Hsiu-Sheng Lin ◽  
Po-Chou Lai
Keyword(s):  
Wavelength Division Multiplexing ◽  
Dispersion Compensation ◽  
Fiber Amplifier ◽  
Effective Area ◽  
Erbium Doped Fiber Amplifier ◽  
Differential Phase Shift ◽  
Wavelength Division ◽  
Modulation Format ◽  
Shift Keying ◽  
Dwdm System

AbstractWe propose the experiment transport of 48 Chs 40 Gb/s dense wavelength division multiplexing (DWDM) system that uses larger effective area fiber (LEAF) in combination with reverse dispersion fiber (RDF), which is a dispersion compensation device, in C band (1,530–1,560 nm) and L band (1,570–1,610 nm) wavelength range to solve the dispersion program. The single Mach–Zehnder modulation (MZM) format with erbium-doped fiber amplifier (EDFA) configuration to generate return-to-zero differential phase-shift keying (RZ-DPSK) modulation signal can compensate dispersion impairment in 48×40 Gb/s DWDM system. The proposed 48×40 Gb/s DWDM system successfully employs single MZM RZ-DPSK modulation format to reduce modulation complex configuration with EDFA to promote the power signal and using LEAF and RDF in 28 spans over 3,360 km ultra-long-haul fiber transmission successfully.

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