trends in opto electro & optical communication (vol4, issue2)
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ISSN : 2347 –9957
Trends in Opto-Electro & Optical
Communication(TOEOC)
May-August 2014
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Trends in Opto Electro & Optical Communication
Trends in Opto Electro & Optical Communication
(ISSN: 2347-9957)
?Enabling Technologies & applications in Optical Networks
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?Signaling and Information Models for Network Control & Management
?Architecture, Protocols & Algorithms for Dynamic Optical Networks
? Fiber-Optic Networks
?Advanced DSL Technologies on Fiber-to-the-Home Architectures
? Operations Support Systems for Optical Network
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I take the privilege to present the hard copy compilation for the [Volume 4 Issue (2)] of Trends in
Opto Electro & Optical Communication (TOEOC).The intension of TOEOC is to create an
atmosphere that stimulates creativeness, research and growth in the area of Opto Electro & Optical
Communication.
The development and growth of the mankind is the consequence of brilliant Research done by
eminent Scientists and Engineers in every field. TOEOC provides an outlet for Research findings
and reviews in areas of Trends in Opto Electro & Optical Communication found to be relevant for
National and International recent developments & research initiative.
The aim and scope of the Journal is to provide an academic medium and an important reference for
the advancement and dissemination of Research results that support high level learning, teaching and
research in the domain of Opto Electro & Optical Communication.
Finally, I express my sincere gratitude and thanks to our Editorial/ Reviewer board and Authors for
their continued support and invaluable contributions and suggestions in the form of authoring write-
ups/ reviewing and providing constructive comments for the advancement of the journals. With
regards to their due continuous support and co-operation, we have been able to publish quality
Research/Review findings for our customers base.
I hope you will enjoy reading this issue and we welcome your feedback on any aspect of the Journal.
Dr. Archana Mehrotra
Director
STM Journals
Director's Desk
STM JOURNALS
1. Design Optimization of C-Band 4-Channel WDM Optical Communication System using EDFA Refaya Taskin Shama, Nisa Alam, Sadia Yasmin, Md. Sajid Hossain, Rinku Basak 1
2. Review on Optimization of Wireless Optical Communication System A. Jabeena, T. Jayabarathi, Ratul Aggarwal, Luve Singh 9
3. Effects of Cavity Length on the Performance Characteristics of InGaN based 420 nm MQW Blue Violet LaserAniqa Tahsin, Rinku Basak 20
4. Efficient Data Transmission through Fiber Optic Communication System using SOASujan Howlader, Md. Shazzad Hossain, Raja Rashidul Hasan, Rinku Basak 27
5. Effects of EDFA Parameters on the Performance of A 4-Channel CWDM Optical Communication SystemNisa Alam, Rinku Basak 33
ContentsTrends in Opto Electro & Optical Communication
TOEOC (2014)© STM Journals 2014. All Rights Reserved
Trends in Opto Electro & Optical Communications ISSN: 2231-0401 (online), ISSN: 2347-9957 (print)
Volume 4, Issue 2
www.stmjournals.com
Design Optimization of C-Band 4-Channel WDM Optical
Communication System using EDFA
Refaya Taskin Shama*, Nisa Alam, Sadia Yasmin,
Md. Sajid Hossain, Rinku Basak Dept. of EEE, American International University-Bangladesh, Banani, Dhaka-1213, Bangladesh
Abstract In this work, the design and experimental characterization of high performance C band
Erbium Doped Fiber Amplifier (EDFA) booster which is pumped at 980 nm are presented. The system is simulated using Optisystem software to achieve gain flatness of
EDF through optimized fiber length and pumping wavelength. The performance of the system is more efficient at the pumping wavelength of 980 nm than that of 1480 nm for a
wide range of high pump power. The EDF gain and noise figure have been investigated in
terms of varying different parameters of EDF such as numerical aperture, erbium doped fiber radius and pump power in 4 channel wavelength division multiplexing (WDM)
system. Simulation results show that the erbium doped fiber gain is more at lower
numerical aperture (i.e. 0.35) and at erbium doped fiber radius (2 μm). In this simulation maximum gain is 14.72 dB and noise figure is 7.2 dB for 550 mW pump power.
Keywords: EDFA, wavelength division multiplexer, single mode fibers, gain, noise
figure, numerical aperture, Erbium doped fiber core radius
TOEOC (2014)© STM Journals 2014. All Rights Reserved
Trends in Opto Electro & Optical Communications ISSN: 2231-0401 (online), ISSN: 2347-9957 (print)
Volume 4, Issue 2
www.stmjournals.com
Review on Optimization of Wireless Optical
Communication System
A. Jabeena, T. Jayabarathi, Ratul Aggarwal*, Luve Singh
School of Electronics Engineering, VIT University, Vellore, Tamil Nadu, India
Abstract Wireless optical communication [WOC] is a recently emerging field, which gives solution
for the drawbacks of radio and microwave communication issues. Optical fiber
communication has already developed and accepted by its high performance such as high data capacity, speed etc. But WOC experiences atmospheric turbulence problems and
distant dependent path loss. And scintillation and aerosol particles (rain, haze, fog and
drizzle) bring this major challenge for the WOC system by inducing the atmospheric attenuation and scattering. The optimization of WOC system is required for atmospheric
effects, fog attenuation, rain attenuation, physical obstructions, scintillations, building sway, etc. Relaying techniques are the best solution for minimizing the distant dependent
loss. The idea of this optical system is so promising that this system can become the
required solution to real time communication system. And this has been signified by the increasing sophistication of optical (and infrared) components and techniques, along with
rapidly expanding communication requirements. Here we have made a review on various factors related to WOC and analyzed for improving its performance.
Keywords: Wireless optical communication, scattering, atmospheric turbulence,
outage probability, scintillation, attenuation, bit error rate
*Author for Correspondence E-mail: [email protected]
TOEOC (2014)© STM Journals 2014. All Rights Reserved
Trends in Opto Electro & Optical Communications ISSN: 2231-0401 (online), ISSN: 2347-9957 (print)
Volume 4, Issue 2
www.stmjournals.com
Effects of Cavity Length on the Performance
Characteristics of InGaN based 420 nm MQW
Blue Violet Laser
Aniqa Tahsin*, Rinku Basak
Department of Electrical and Electronic Engineering, American International
University-Bangladesh, Bangladesh
Abstract This research work has been carried out to improve the performance of a MQW blue
violet laser to get an efficient and high power output. For this purpose the structure is
designed using In0.156Ga0.844N/Al0.07Ga0.93. A high performance of the laser is obtained with the optimized values of injection current and differential gain. A maximum optical
output power of 220.3 mW is obtained which enhances the designed laser for the application in data storage, optical discs and displays, printings etc. The laser structure
with longer cavity length has the lower optical loss which reduces the optical output
power and efficiency. The performance characteristics and their dependence to cavity length of the blue violet laser have been investigated using MATLAB simulation. It was
found that lasers having shorter cavity length give better performance and also slope
efficiency is higher than the total external quantum efficiency.
Keywords: Cavity length, output power, differential quantum efficiency, total external
quantum efficiency
TOEOC (2014) © STM Journals 2014. All Rights Reserved
Trends in Opto Electro & Optical Communications ISSN: 2231-0401 (online), ISSN: 2347-9957 (print)
Volume 4, Issue 2
www.stmjournals.com
Efficient Data Transmission through Fiber Optic
Communication System using SOA
Sujan Howlader*, Md. Shazzad Hossain, Raja Rashidul Hasan, Rinku Basak Department of Electrical and Electronic Engineering, American International
University-Bangladesh (AIUB), Bangladesh
Abstract This paper represents the characteristic of Semiconductor Optical Amplifier (SOA) by varying frequency of Vertical Cavity Surface Emitting Laser (VCSEL) which is used as a
source at the transmitter end and also injection current of SOA. It is observed that by
varying the injection current up to 1 ampere, maximum output power of 0.74935 watt can be achieved at the frequency of VCSEL of 193.1 THz when the optical fiber length is 50
Km. By varying the frequency from 177 to 250 THz, maximum output power of 0.10551
watt can be obtained at 240 THz with injection current of 0.15 ampere. In this paper it also observed that SOA can only operates in between the range of 0 to 1 ampere injection
current. At 0.042 ampere injection current we get the maximum quality factor of 5.34 with Good BER of 4.67e
-8.
Keywords: SOA, vCSEL, optical fiber, BER, Q-Factor
TOEOC (2014) © STM Journals 2014. All Rights Reserved
Trends in Opto Electro & Optical Communications ISSN: 2231-0401 (online), ISSN: 2347-9957 (print)
Volume 4, Issue 2
www.stmjournals.com
Effects of EDFA Parameters on the Performance of A
4-Channel CWDM Optical Communication System
Nisa Alam*, Rinku Basak Dept. of EEE, American International University-Bangladesh, Dhaka-1213, Bangladesh
Abstract In this work, the performance of EDFA has been analyzed in Conventional band
(C- band) based on its three types of application system i.e. pre-amplifier, post-amplifier
and inline amplifier system. To check the performance for these three application system, a 4-channel Coarse Wavelength Division Multiplexing (CWDM) system has been
designed using EDFA with optical CWDM fiber. By varying the length and numerical
aperture (NA) of EDFA, different factors such as gain, output power has been investigated for the 4 channel CWDM system. The simulation is done using Optisystem
7.0 software. Here forward pumping method is used with 980 nm pumping signal rather than 1480 nm to give more efficient output. Simulation result revealed that the pre
amplifier system gives higher gain than the others two systems and the achieved value is
12.735904 dB where the post and inline amplifier gains are respectively found as 7.5988352 dB and 11.893852dB. The maximum output power (18.803 dBm) is obtained
for the post amplifier system whereas pre amplifier gives minimum output power (16.565 dBm) and inline amplifier system gives moderate value (17.872 dBm) compared
to the other two systems.
Keywords: Erbium doped fiber amplifier, coarse wavelength division multiplexing,
gain, output power