Cascaded stages of parametric optical fiber amplifiers with Raman fiber amplifiers for upgrading of telecommunication networks through optical wireless communication channel

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Mahmoud M.A. Eid ◽  
Eslam Shehata ◽  
Ahmed Nabih Zaki Rashed
Keyword(s):  
Optical Fiber ◽  
Electrical Power ◽  
Optical Power ◽  
Optical Signal ◽  
Electrical Signal ◽  
Telecommunication Networks ◽  
Fiber Amplifiers ◽  
Total Power ◽  
Q Factor ◽  
Power Meter

Abstract This paper contains a main model which concludes a two optical fiber cable along 70 km and with Parametric/Raman amplifiers with a result of total power 0.781 dBm that computed by the optical power meter which is located before the receiver part and the second optical fiber channel, a total power −44.186 dBm at the end of model which is computed by the electrical power meter visualizer, and a max. Q factor 2.548 computed by the BER analyzer. The suggested model has outlined some updates on the previous model to improve the results so that the results are increased at the same length as the following: total power of optical signal becomes 10.039 dBm, total power of electrical signal becomes 0.624 dBm, and the max. Q factor becomes 9.60787.

scholarly journals Transmission (2Gbps) over optical fiber cable by using radio over fiber and wavelength division multiplexing techniques

2019 ◽  
Vol 24 (5) ◽  
pp. 115
Author(s):  
Humam Husseinˡ ◽  
Dogu Cagdas Atilla1 ◽  
Essa Essa2 ◽  
Cagatay Aydin1
Keyword(s):  
Optical Fiber ◽  
Wavelength Division Multiplexing ◽  
Performance Test ◽  
Optical Signal ◽  
Radio Over Fiber ◽  
Total Power ◽  
Q Factor ◽  
Wavelength Division ◽  
Fiber Technology ◽  
Optical Fiber Cable

In recent years, there has been a growing and continuous demand for great (data rates) beyond existing wired and wireless networks. Radio-over-Fiber technology is considered as an efficient and practical solution for providing broadband wireless. In this paper, many techniques are used to implement a system that has the capability to provide a great bit rate, broadband bandwidth, and minimum cost. So Radio-over-Fiber technology was used to modulate the light with radio-signal and transmission the signals through an optical fiber cable. Wavelength-Division-Multiplexing technique was used to send many signals through the same link, and Subcarrier Multiplexing-Amplitude Shift keying as a modulation format. 2Gpbs separate on two channels was transmitted on Single-Mode Fiber. The average results obtained from our experience was as follows: maximum Q factor average = 4.9712925, minimum BER average = 3.63*10-7, total power average (dBm) = -51.1502, the OSNR average (dB) = 52.085 for channel_1. The results of channel_2 were: maximum Q factor average = 5.5901325, minimum BER average = 1.26*10-8, total power average (dBm) = -46.60135, the average of optical signal-to-noise ratio (dB) = 54.65. All the average result that has from our simulation was very good and acceptable. The simulation and performance test of our experience was done using Optisystem 7.0.   http://dx.doi.org/10.25130/tjps.24.2019.100

Four bits data sequence generators based ytterbium doped fiber amplifiers for upgrading maximum Q factor and minimum BER

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Aadel M. Alatwi ◽  
Ahmed Nabih Zaki Rashed ◽  
IS Amiri
Keyword(s):  
Electrical Power ◽  
Optical Power ◽  
Fiber Amplifiers ◽  
Q Factor ◽  
Data Sequence ◽  
Time Duration ◽  
Received Power ◽  
Time Period ◽  
Amplitude Level ◽  
Period Duration

AbstractWe have simulated four bits data sequence generators based ytterbium-doped fiber amplifiers for upgrading max. Q factor and min. BER. Optical power variations against time duration after fiber cable length of 250 km with the bits sequence generators of 0101, 1000, and 1010 respectively are simulated. As well as the electrical power/total received power variations against frequency after photodetector receiver with the bits sequence generators of 0101, 1000, and 1010 respectively are discussed in details. Moreover, the signal power amplitude level with the time period duration after photodetector receiver/3R regenerator with the bits sequence generators of 0101, 1000, and 1010 respectively are clarified to show the max. Q factor and min. BER values for each case.

Optical Networks Performance Optimization Based on Hybrid Configurations of Optical Fiber Amplifiers and Optical Receivers

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
I. S. Amiri ◽  
Fatma Mohammed Aref Mahmoud Houssien ◽  
Ahmed Nabih Zaki Rashed ◽  
Abd El-Naser A. Mohammed
Keyword(s):  
Optical Fiber ◽  
Optical Networks ◽  
Wavelength Division Multiplexing ◽  
Performance Optimization ◽  
Input Power ◽  
Fiber Amplifiers ◽  
Q Factor ◽  
Wavelength Division ◽  
Transmission Distance ◽  
Optical Fiber Amplifiers

AbstractThe 16-channels dense wavelength division multiplexing (DWDM) systems have been optimized by utilizing hybrid configurations of conventional optical fiber amplifiers (EDFA, RAMAN and SOA) and optical photodetectors (PIN, APD(Si) and APD(InGaAs)). The DWDM systems were implemented for 5 Gb/s channel speed using one of these configurations with 100 GHz channel spacing and 25 km amplifying section. The hybrid configurations are the combinations of (PIN + EDFA), (PIN + RAMAN), (PIN + SOA), (APD(Si) + EDFA), (APD(Si) + RAMAN), (APD(Si) + SOA), (APD(InGaAs) + EDFA), (APD(InGaAs) + RAMAN) and (APD(InGaAs) + SOA). Based on BER, Q-factor and eye diagrams, the performance was compared for these configurations under influences of various thermal noise levels of photodetectors over different fiber lengths ranging from 25 km up to 150 km. The results revealed that both APD structures give optimum performance at input power Pin = 5 dBm due to high internal avalanche gain. EDFA outperforms RAMAN and SOA amplifiers. SOA amplifier shows degraded performance because of nonlinearity effects induced. RAMAN amplifier seems to be the best alternative for long reach DWDM systems because it minimizes the effects of fiber nonlinearities. The configuration (APD(Si) + EDFA) is the most efficient and recommended to be used for transmission distance beyond 100 km due to its larger Q-factor.

An Optical Fiber Sensing Network Supporting Weak Optical Signal Detection and a Neural Network Method for Information Collection

2021 ◽  
Vol 16 (2) ◽  
pp. 188-195
Author(s):  
Keyuan Liu ◽  
Haibin Li ◽  
Ya Wang
Keyword(s):  
Neural Network ◽  
Optical Fiber ◽  
Signal Detection ◽  
Mobile Phone ◽  
Optical Power ◽  
Information Collection ◽  
Identification System ◽  
Power Meter ◽  
Fiber Sensing ◽  
Optical Fiber Sensing

The weak direct current (DC) signals detected and converted by the photodetector are output to the mobile phone by voltage/frequency switching, and the signals are processed by the mobile phone APP and audio conversion module. The photodetector is equipped with the automatic switching function to design an optical power meter and detect weak signals. Meanwhile, the optical cable identification system is analyzed and combined with the optical power meter to generate an optical fiber sensing network to improve the weak alternating current (AC) signal detection. This network needs data fusion in sensor nodes’ data collection. The cluster routing protocol is introduced and combined with the back propagation neural network (BPNN) to propose a method suitable for this photoelectric transmission and improve the information fusion and accuracy. In the experiment, the optical power meter is output in gears first, and the output waveforms are normal. The photodiode’s optical power is adjusted to obtain different frequencies on the oscilloscope. In the proposed optical fiber sensing network, weak AC signals are amplified significantly, and different optical fiber lines can be distinguished in the optical cables. The proposed information collection method can reduce network communication and node energy consumption.

A Comparative Analysis of Dual-Order Bidirectional Pumping Schemes in Optical Fiber Raman Amplification

2019 ◽  
Vol 40 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Kulwinder Singh ◽  
Manjeet Singh Patterh ◽  
Manjit Singh Bhamrah
Keyword(s):  
Comparative Analysis ◽  
Fiber Length ◽  
Noise Figure ◽  
Signal To Noise Ratio ◽  
Optical Power ◽  
Optical Signal ◽  
Input Power ◽  
Q Factor ◽  
Wavelength Division ◽  
First Order

Abstract In this paper, dual-order bidirectional pumping schemes of distributed fiber Raman amplifier are compared with standard first-order pumping in wavelength division multiplexed optical transmission systems. The novel comparison analysis is carried out in terms of Optical signal-to-noise ratio and Q-factor, on-off gain and noise figure by varying optical input power and fiber lengths. The results indicate that dual-order schemes present 0.02 dB higher OSNR and 5 dB higher Q-factor in comparison to first-order pumping when input optical power is varied from −4 to 5 dBm. Similarly, there is 4 dB higher on-off gain with dual order comparatively to first order when fiber length varied from 10 to 100 km. However, there is degradation in noise figure and Q-factor due to DRBS noise with dual-order pumping when fiber length from 10 to 100 km. Further, the signal power evolutions along fiber length show that there is 5 dBm improvement for 100 km fiber. The novelty of the work is that comparative analysis exhibits improvement in OSNR, on-off gain and Q-factor using dual-order bidirectional pumping.

High Performance Molecular Detection Biosensor Using Plasmonic Spiral Nanoantenna Based on Optical Fiber

2020 ◽  
Vol 16 (5) ◽  
pp. 715-720
Author(s):  
Ali Elrashidi
Keyword(s):  
Refractive Index ◽  
Optical Fiber ◽  
Cholesterol Oxidase ◽  
Surrounding Medium ◽  
Optical Power ◽  
Optical Signal ◽  
Peak Wavelength ◽  
Refractive Index Sensitivity ◽  
Reflected Signal ◽  
Index Sensitivity

Biomedical sensor that sense different molecules with a high refractive index sensitivity is proposed in this work. Plasmonic nanospiral antenna is mounted on a top surface of an optical fiber to reflect the incident optical signal back to the fiber. The reflected signal depends on the nanospiral antenna material, dimensions and the surrounding medium. Using streptavidin molecule, the nanospiral antenna have been simulated based on finite difference time domain method to optimize its dimensions. The optimum dimensions are 10 nm, 55 nm and 40 nm for inner-outer thicknesses and height respectively. The introduced biosensor can detect different molecules based on surface plasmonic resonance, which depends on the shifting of the peak wavelength according to the molecules type. The detected molecules are Streptavidin, Urease, Uricase molecules and Glucose oxidase and Cholesterol oxidase enzymes with a high sensitivity. The maximum refractive index sensitivity is obtained when sensing cholesterol oxidase molecules with 3028 nm/RIU at 3.58 μm peak wavelength. Figure of merit and quality factor are also calculated for all detected molecules. Finally, electric field and optical power, before and after binding, of the reflected signal are illustrated and discussed.

Power Analysis of Soliton Pulse for ROF-OFDM System

2016 ◽  
Vol 37 (1) ◽  
Author(s):  
Kulwinder Singh ◽  
Kamaljit Singh Bhatia ◽  
Hardeep Singh Ryait ◽  
Amandeep Kaur
Keyword(s):  
Optical Fiber ◽  
High Speed ◽  
Electrical Power ◽  
Optical Power ◽  
Optical Fiber Communication ◽  
Modulation Formats ◽  
Fiber Communication ◽  
Propagation Behavior ◽  
Soliton Pulse ◽  
Pulse Transmission

AbstractIn this paper, propagation behavior of Soliton pulse in optical fiber communication is analyzed. Ultra high speed transmission of data over optical fiber is possible by choosing appropriate pulse shape. Soliton pulse transmission using different modulation formats is performed to minimize jitter. Also analysis is done to calculate optical power, electrical power and average peak electrical power at different frequencies.

In line and post erbium-doped fiber amplifiers with ideal dispersion compensation fiber Bragg grating for upgrading optical access networks

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Mahmoud M. A. Eid ◽  
Anas Ibrahim ◽  
Ahmed Nabih Zaki Rashed
Keyword(s):  
Dispersion Compensation ◽  
Electrical Power ◽  
Access Networks ◽  
Fiber Amplifiers ◽  
Optical Access Networks ◽  
Optical Access ◽  
Eye Diagram ◽  
Power Meter ◽  
Proposed Model ◽  
Erbium Doped

Abstract This model in line and post erbium-doped fiber amplifiers with ideal dispersion compensation FBG for upgrading optical access networks for an extended distance of 60 km inside the optical fiber cable with a bit rate 10 Gb/s and Erbium-doped fiber amplifier (EDFA) which applied at length 5 m. The electrical results are measured by electrical visualizer (eye diagram analyzer, electrical power meter visualizer). The eye diagram analyzer used to calculate the min bit error rate in addition to the maximum Q factor which has a result in the proposed model is 51.97. The electrical power meter visualizer used in the proposed model to calculate the total power which has a result of 23.70 dBm.

scholarly journals Desain sensor massa menggunakan metode macrobending fiber optic

JURNAL ELTEK ◽  
2021 ◽  
Vol 19 (1) ◽  
pp. 52
Author(s):  
Mochammad Junus ◽  
Yoyok Heru Prasetyo
Keyword(s):  
Optical Fiber ◽  
Light Source ◽  
Data Transmission ◽  
Fiber Optic ◽  
Measurement Data ◽  
Optical Power ◽  
Sensor Data ◽  
Mass Sensor ◽  
Pressure Losses ◽  
Power Meter

Kecepatan dalam hal pengiriman data dan komunikasi merupakan hal terus menerus harus diperbaiki dalam era ini. Beberapa permasalahan dapat timbul karena adanya keterlambatan pengiriman data baik itu bertujuan untuk komunikasi atau pengiriman data pengukuran untuk keperluan tertentu. Salah satu solusi yang dapat di lakukan adalah dengan menggunakan fiber optik. Fiber optik kerap digunakan karena keunggulannya dalam kecepatannya dalam hal komunikasi dan pengiriman data. Saat ini, selain untuk berkomunikasi, fiber optik juga banyak dikembangkan di berbagai keperluan. Salah satunya adalah dalam pengiriman data sensor. Penelitian ini mengangkat topik permasalahan yaitu bagaimana mendesain sebuah sensor massa, dengan menggunakan fiber optik sebagai sensor massa dengan memanfaatkan metode macrobending. Kabel yang digunakan pada penelitian ini menggunakan tipe patch core singlemode FC to FC yang dililit dengan variasi 1,3,5,7, dan 9 kali lilitan pada selang elastis berdiamter ¼ inchi, ½ inchi, 5/8 inchi, ¾ inchi dan 1 inchi dengan massa 0,1 Kg- 10 Kg dengan range 200gram. Untuk input menggunkan OLS (Optical light Source) dengan nilai -7 dBm dan nilai output di terima dan dibaca oleh OPM (Optical Power Meter). Dari hasil pengukuran diperoleh nilai daya output, loss, losses macrobending, dan rugi-rugi tekanan. Dari penelitian ini, hasil yang didapatkan adalah sebuah rumus matematis hubungan antara beban atau massa dengan rugi-rugi tekanan pada kabel fiber optik. Speed ​​in terms of data transmission and communication is something that must continuously be improved in this era. Several problems can arise due to delays in sending data, either for communication purposes or for sending measurement data for certain purposes. One solution that can be done is to use optical fiber. Optical fiber is often used because of its superiority in speed in terms of communication and data transmission. Currently, in addition to communicating, optical fiber is also being developed for various purposes. One of them is in sending sensor data. This research raises the topic of the problem, namely how to design a mass sensor, using optical fiber as a mass sensor by utilizing the macrobending method. The cables used in this study used a single patch core type FC to FC wrapped with variations of 1,3,5,7, and 9 turns on elastic hoses with diameters of ¼ inch, ½ inch, 5/8 inch, ¾ inch and 1 inch. with a mass of 0.1 kg - 10 kg with a range of 200 grams. For input using an OLS (Optical light Source) with a value of -7 dBm and the output value is received and read by the OPM (Optical Power Meter). From the measurement results obtained the value of output power, loss, macrobending losses, and pressure losses. From this research, the results obtained are a mathematical formula for the relationship between load or mass and pressure losses on fiber optic cables.

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