scholarly journals Raman Amplification Optimization in Short-Reach High Data Rate Coherent Transmission Systems

Sensors ◽  
2021 ◽  
Vol 21 (19) ◽  
pp. 6521
Author(s):  
Mingming Tan ◽  
Md Asif Iqbal ◽  
Tu T. Nguyen ◽  
Paweł Rosa ◽  
Lukasz Krzczanowicz ◽  
...  
Keyword(s):  
Short Distance ◽  
Single Mode ◽  
Second Order ◽  
Transmission Performance ◽  
Single Mode Fibre ◽  
First Order ◽  
High Data ◽  
Raman Amplifiers ◽  
Mode Fibre ◽  
Better Than

We compared the transmission performances of 600 Gbit/s PM-64QAM WDM signals over 75.6 km of single-mode fibre (SMF) using EDFA, discrete Raman, hybrid Raman/EDFA, and first-order or second-order (dual-order) distributed Raman amplifiers. Our numerical simulations and experimental results showed that the simple first-order distributed Raman scheme with backward pumping delivered the best transmission performance among all the schemes, notably better than the expected second-order Raman scheme, which gave a flatter signal power variation along the fibre. Using the first-order backward Raman pumping scheme demonstrated a better balance between the ASE noise and fibre nonlinearity and gave an optimal transmission performance over a relatively short distance of 75 km SMF.

scholarly journals Design and Performance Analysis of the WDM Schemes for Radio over Fiber System With Different Fiber Propagation Losses

Fibers ◽  
2019 ◽  
Vol 7 (3) ◽  
pp. 19 ◽  
Author(s):  
Adnan Ali ◽  
Alaa Farhood
Keyword(s):  
Wavelength Division Multiplexing ◽  
Single Mode ◽  
Base Stations ◽  
Q Factor ◽  
Fiber System ◽  
Single Mode Fibre ◽  
Eye Diagram ◽  
High Data ◽  
Optic Communication ◽  
Mode Fibre

The integration of optical and wireless networks increases mobility and capacity and decreases costs in access networks. Fibre optic communication can be considered optical communication that combines the methodologies of two communications, and it may be utilised in systems of wired and wireless communication. The solution for many problems is radio over fibre (RoF) because it can control many base stations (BS) that are connected to a central station (CS) with an optical fibre. The received RoF signal head for in a low quality; thus, many factors will result in some problems such as a high bit error rate (BER) and low Q-factor values, and the receiver might not be operating in a high data rate network. Wavelength division multiplexing (WDM) network can offer a solution to these problems where the transmission of different signals can be done with a single-mode fibre. BER should be reduced to assured values, and the Q-factor must be increased. The investigation of WDM-RoF with different lengths of fibre at various channel spacing will be simulated using Optisystem software, and the RoF’s receiver performance is measured and analyzed depending on the acquired BER, the value of the Q-factor, and the height of the opening of the eye diagram. The degradation factors effect such as attenuation and dispersion are significantly limited with the addition of an EDFA amplifier to a Single Mode Fibre (SMF).

Stabilising single mode fibre couplers by using GEL glass

1981 ◽  
Vol 17 (5) ◽  
pp. 187 ◽  
Author(s):  
D.C. Tran ◽  
K.P. Koo
Keyword(s):  
Single Mode ◽  
Single Mode Fibre ◽  
Mode Fibre

Coupling efficiency and sensitivity of an LED to a single-mode fibre

1986 ◽  
Vol 22 (21) ◽  
pp. 1110 ◽  
Author(s):  
D.N. Christodoulides ◽  
L.A. Reith ◽  
M.A. Saifi
Keyword(s):  
Coupling Efficiency ◽  
Single Mode ◽  
Single Mode Fibre ◽  
Mode Fibre

Low-current 1.3 μm edge-emitting LED for single-mode-fibre subscriber loop applications

1986 ◽  
Vol 22 (2) ◽  
pp. 87 ◽  
Author(s):  
D.M. Fye ◽  
R. Olshansky ◽  
J. Lacourse ◽  
W. Powazinik ◽  
R.B. Lauer
Keyword(s):  
Single Mode ◽  
Single Mode Fibre ◽  
Mode Fibre

scholarly journals Fabrication and Qualitative Analysis of an Optical Fibre EFPI-Based Temperature Sensor

Sensors ◽  
2021 ◽  
Vol 21 (13) ◽  
pp. 4445
Author(s):  
Fintan McGuinness ◽  
Aidan Cloonan ◽  
Mohamed Oubaha ◽  
Dinesh Babu Duraibabu ◽  
M. Mahmood Ali ◽  
...  
Keyword(s):  
Temperature Sensor ◽  
Single Mode ◽  
Outer Diameter ◽  
The Novel ◽  
Single Mode Fibre ◽  
Manufacturing Technique ◽  
Sensor Structure ◽  
Sensitive Sensor ◽  
Quartz Capillary ◽  
Mode Fibre

The following presents a comparison of an extrinsic Fabry–Perot interferometer (EFPI)-based temperature sensor, constructed using a novel diaphragm manufacturing technique, with a reference all-glass EFPI temperature sensor. The novel diaphragm was manufactured using polyvinyl alcohol (PVA). The novel sensor fabrication involved fusing a single-mode fibre (SMF) to a length of fused quartz capillary, which has an inner diameter of 132 μm and a 220 μm outer diameter. The capillary was subsequently polished until the distal face of the capillary extended approximately 60 μm beyond that of the single mode fibre. Upon completion of polishing, the assembly is immersed in a solution of PVA. Controlled extraction resulted in creation of a thin diaphragm while simultaneously applying a protective coating to the fusion point of the SMF and capillary. The EFPI sensor is subsequently sealed in a second fluid-filled capillary, thereby creating a novel temperature sensor structure. Both temperature sensors were placed in a thermogravimetric analyser and heated from an indicated 30 °C to 100 °C to qualitatively compare sensitivities. Initial results indicated that the novel manufacturing technique both expedited production and produces a more sensitive sensor when compared to an all-glass construction.

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