scholarly journals Developments of Optical Frequency Standards for Wavelength-division-multiplexing (WDM) Optical Fiber Communication Systems

2004 ◽  
Vol 124 (1) ◽  
pp. 52-55 ◽  
Author(s):  
Ken’ichi Nakagawa ◽  
Atsushi Onae
Keyword(s):  
Optical Fiber ◽  
Wavelength Division Multiplexing ◽  
Communication Systems ◽  
Optical Fiber Communication ◽  
Optical Frequency ◽  
Fiber Communication ◽  
Wavelength Division ◽  
Frequency Standards

A Real-Time Polarization Compensation System Based on Wavelength-Division Multiplexing for Optical Fiber Communication Systems

2020 ◽  
Vol 40 (14) ◽  
pp. 1406003
Author(s):  
黄媛 Huang Yuan ◽  
赵家钰 Zhao Jiayu ◽  
王金东 Wang Jindong ◽  
杜聪 Du Cong ◽  
彭清轩 Peng Qingxuan ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Real Time ◽  
Wavelength Division Multiplexing ◽  
Communication Systems ◽  
Optical Fiber Communication ◽  
Compensation System ◽  
Fiber Communication ◽  
Wavelength Division

scholarly journals ANALISIS KOMPENSASI DISPERSI MENGGUNAKAN PENGUAT RAMAN PADA JARINGAN WDM (WAVELENGTH DIVISION MULTIPLEXING) DALAM KOMUNIKASI SERAT OPTIK

2018 ◽  
Vol 15 (2) ◽  
pp. 88
Author(s):  
Roby Ikhsan ◽  
Romi Fadli Syahputra ◽  
Saktioto Saktioto
Keyword(s):  
Optical Fiber ◽  
Wavelength Division Multiplexing ◽  
Data Transmission ◽  
Dispersion Compensation ◽  
Optical Fiber Communication ◽  
Fiber Communication ◽  
Wavelength Division ◽  
Fiber Raman Amplifier ◽  
Wdm Network ◽  
Transmission Speed

The discovery of optical fiber cause widespread revolution of communication system. Optical fiber communication has excellency on data transmission speed, security, flexibility, and broadly bandwidth. The applying of WDM network can broaden the bandwidth so that the transmission performance becomes more splendid. Although some factors such as dispersion, attenuation, and scattering can hinder the performance of fiber optic on sending data. Moreover dispersion can wreck data and spread pulse as it travels alongs fiber so that causing interference. There is some methods  of dispersion compensation. In this paper, Fiber Raman Amplifier is used on WDM network to strengthen signal which is sent to detector. This research utilize simulation approachment  with various bandwidth and length fiber. The results show lowest BER value and highest Q-factor at bandwidth frequency of 30 GHz and fiber length of 20 km.

Gas Source MBE Growth and Characterization of TlInGaAs/InP DH Structures for Temperature-independent Wavelength LD Application

2001 ◽  
Vol 692 ◽  
Author(s):  
Hajime Asahi ◽  
Hwe-Jae Lee ◽  
Akiko Mizobata ◽  
Kenta Konishi ◽  
Osamu Maeda ◽  
...  
Keyword(s):  
Wavelength Division Multiplexing ◽  
Communication Systems ◽  
Laser Diodes ◽  
Optical Fiber Communication ◽  
Lasing Wavelength ◽  
Fiber Communication ◽  
Wavelength Division ◽  
Gas Source ◽  
Peak Energy ◽  
Gas Source Mbe

AbstractTlInGaAs/InP double-hetero (DH) structures were grown on (100) InP substrates by gas source MBE. The photoluminescence (PL) peak energy variation with temperature decreased with increasing Tl composition. For the DH with a Tl composition of 13%, the PL peak energy varied only slightly with temperature (−0.03 meV/K). This value corresponds to a wavelength variation of 0.04 nm/K and is much smaller than that of the lasing wavelength of InGaAsP/InP distributed feedback laser diodes (0.1 nm/K). TlInGaAs/InP light emitting diodes with 6% Tl composition were fabricated and the small temperature variation of the electroluminescence peak energy (−0.09 meV/K) was observed at the wavelength around 1.58 μm. The results are promising to realize the temperature-independent wavelength laser diodes, which are important in the wavelength division multiplexing (WDM) optical fiber communication systems.

Polymer waveguide module for visible wavelength division multiplexing plastic optical fiber communication

2005 ◽  
Vol 30 (17) ◽  
pp. 2206 ◽  
Author(s):  
Masatoshi Yonemura ◽  
Akari Kawasaki ◽  
Satoru Kato ◽  
Manabu Kagami ◽  
Yukitoshi Inui
Keyword(s):  
Optical Fiber ◽  
Wavelength Division Multiplexing ◽  
Optical Fiber Communication ◽  
Plastic Optical Fiber ◽  
Fiber Communication ◽  
Wavelength Division ◽  
Polymer Waveguide ◽  
Visible Wavelength

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.

scholarly journals ANALISIS REDAMANTERHADAP PERFORMANCEDENSE WAVELENGTH DIVISION MULTIPLEXING (DWDM)PADA SISTEM KOMUNIKASI SERAT OPTIKDENGAN METODE LINK POWER BUDGET DI PT. TELKOM PADANG (STUDI KASUS LINK PADANG – LUBUK BASUNG)

2015 ◽  
Vol 3 (1) ◽  
Author(s):  
Farta Wendy Herdianta ◽  
Hanesman Hanesman ◽  
Delsina Faiza
Keyword(s):  
Optical Fiber ◽  
Optical Fibers ◽  
Wavelength Division Multiplexing ◽  
Power Output ◽  
Communication Systems ◽  
Single Mode ◽  
Optical Fiber Communication ◽  
Power Budget ◽  
Fiber Communication ◽  
The Core

The research was conducted by analyzing the optical fiber attenuation of the DWDM performance in terms of power received on optical fiber communication systems link Padang-Lubuk cone in PT. Telkom Padang. Optical fiber has a very small damping. Therefore optical fibers become the primary choice in telecommunications networks. To improve the transmission quality is better then the use of DWDM technology, DWDM technology is a method to insert a number of channels were transmitted in a single optical fiber. Instruments in this study is the Power Meter and OTDR JDSU MTS-2000 type, the type of cable used G.655 Single Mode type. Link Power Budget method is used to determine the performance of DWDM caused by attenuation based on the value of the received power output receiver. On the link Padang - Lubuk cone highest attenuation occurs in core 1 of 29.742dB with 100.035 km cable lengths, and the core 10 of 31.8 dB with 119.998 km cablelengths. Based on the large fault or attenuation/km core 1 of 0.297 dB/km, the core 10 of 0.265 dB/km and the standard ITU-T was 0.35 dB/km. Value attenuation/km core 1 and core 10 is still in normal conditions and under standard ITU-T 0.35 dB/km. Based on optical fiber attenuation, the results of analysis of the link power budget is the value of Rx is smaller than the value of Rx sensitivity of -27 dBm, it can be said performance DWDM optical fiber communication systems in normal and can be used to operate because the power output can still be accepted by receiver in the device. Keywords:optical fiber cable, optical fiber attenuation, DWDM, link power budget.

scholarly journals A Novel Ultra-Broadband Polarization Filter Based on a Microstructured Optical Fiber with a Gold-Coated Air Hole

Micromachines ◽  
2020 ◽  
Vol 11 (9) ◽  
pp. 816
Author(s):  
Chao Wang ◽  
Yajing Zhang ◽  
Zheng Wu ◽  
Qian Wang ◽  
Guoxu Zhang ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Wavelength Division Multiplexing ◽  
Communication Systems ◽  
Extinction Ratio ◽  
Resonance Effect ◽  
Optical Fiber Communication ◽  
Loss Ratio ◽  
Polarization Filter ◽  
Fiber Communication ◽  
Microstructured Optical Fiber

In this paper, a pentagonal microstructured optical fiber polarization filter by utilizing a surface plasmon resonance effect is proposed. The characteristics of the mode-coupling and filtering of the filter are studied by making use of the full-vector finite element method. The performance of the filter is greatly affected by the structure parameters. The losses of Y and X polarization of the fiber core are 665.97 and 0.17 dB/cm at 1.55 μm, respectively, and the loss ratio is 3917.47. This shows that the filter has a greater loss ratio. Moreover, both the extinction ratio and tolerance are also researched, which shows that the proposed filter has a wider filtering bandwidth and better fabrication tolerance. The designed filter has an important role in wavelength-division multiplexing (WDM) and coherent optical fiber communication systems.

Long-haul coherent optical fiber communication systems using optical amplifiers

1991 ◽  
Vol 9 (2) ◽  
pp. 251-260 ◽  
Author(s):  
S. Ryu ◽  
S. Yamamoto ◽  
H. Taga ◽  
N. Edagawa ◽  
Y. Yoshida ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Communication Systems ◽  
Optical Amplifiers ◽  
Optical Fiber Communication ◽  
Fiber Communication
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