Transmission capacity improvement of a 1.55-μm single-mode fiber link by chromatic dispersion equalization

1986 ◽  
Author(s):  
J. J. BERNARD ◽  
J. GUILLON
Keyword(s):  
Chromatic Dispersion ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Transmission Capacity ◽  
Capacity Improvement ◽  
Fiber Link

Technique for direct measurement of single-mode fiber chromatic dispersion

1987 ◽  
Vol 5 (9) ◽  
pp. 1207-1213 ◽  
Author(s):  
A. Barlow ◽  
R. Jones ◽  
K. Forsyth
Keyword(s):  
Direct Measurement ◽  
Chromatic Dispersion ◽  
Single Mode ◽  
Single Mode Fiber

scholarly journals Nonlinearities Diminution in 40 Gb/s 256 QAM Radio over Fiber Link via Machine Learning Method

2019 ◽  
Author(s):  
Muhammad Usman Hadi
Keyword(s):  
Machine Learning ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Radio Over Fiber ◽  
Support Vector ◽  
Potential Candidate ◽  
Input Signal Power ◽  
Quadrature Phase ◽  
Fiber Link ◽  
Mach Zehnder Modulator

Machine learning (ML) methodologies have been looked upon recently as a potential candidate for mitigating nonlinearity issues in optical communications. In this paper, we experimentally demonstrate a 40-Gb/s 256-quadrature amplitude modulation (QAM) signal-based Radio over Fiber (RoF) system for 50 km of standard single mode fiber length which utilizes support vector machine (SVM) decision method to indicate an effective nonlinearity mitigation. The influence of different impairments in the system is evaluated that includes the influences of Mach-Zehnder Modulator nonlinearities, in-phase and quadrature phase skew of the modulator. By utilizing SVM, the results demonstrated in terms of bit error rate and eye linearity suggest that impairments are significantly reduced and licit input signal power span of 5dBs is enlarged to 15 dBs.

scholarly journals Dual Polarization-Based Transmitter Configuration Improving Q-Factor for a Single-Mode Fiber Link

2020 ◽  
Vol 8 (5) ◽  
pp. 4286-4289
Keyword(s):  
Optical Fibers ◽  
Power Level ◽  
Phase Variation ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Spectrum Efficiency ◽  
Q Factor ◽  
Nonlinear Optical Effect ◽  
Communication Range ◽  
Fiber Link

The requirement of the modern application is to transmit wide bandwidth of signal with the low latency. The optical fibers provide wide transmission bandwidth along with very little delay as well as choice on choosing transmission medium for high data rate. However, Stimulated Brillouin Scattering (SBS) is a nonlinear optical effect that restricts power level into a fiber to few milliwatts. It degrades the Q-factor and consequently the bit error rate of an optical fiber link. For suppression of SBS, various approaches have been used previously such as PSK, ASK, FSK, CSRZ-DQPSK etc. Among all the previous techniques, CSRZ-DQPSK transmitter is considered as the most efficient one for suppression of SBS. However, it consists of some drawbacks such as low spectrum efficiency, susceptibility to phase variation and short communication range, due to which requirement arises of upgrading the previous work. Therefore, in the proposed work (i.e. CSRZ-DP-QPSK), DP-QPSK scheme is used which makes the system more efficient as it has high spectrum efficiency and improved sensitivity. Also, the communication range is elongated in present work. The performance evaluation of CSRZ-DP-QPSK approach has been performed in terms of Q-Factor, BER, and threshold. Also, the comparative analysis of the proposed approach with conventional approaches has been performed and from the obtained results it has been demonstrated that proposed work is more efficient than conventional one as it has better SBS tolerance and improved BER.

Performance analysis of CSRZ-DQPSK transmitter configurations for SBS tolerance in single mode fiber link

Optik ◽  
2019 ◽  
Vol 176 ◽  
pp. 357-365
Author(s):  
Rimmya Chitravelu ◽  
Ganesh Madhan Muthu
Keyword(s):  
Performance Analysis ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Fiber Link

Passive Timing Stabilization over a 33-km Single Mode Fiber Link using Temporal Imaging

2018 ◽  
Author(s):  
Jasper R. Stroud ◽  
Olukayode Okusaga ◽  
Gregory Weaver ◽  
Nelli Mosavi ◽  
Mark A. Foster
Keyword(s):  
Single Mode ◽  
Single Mode Fiber ◽  
Fiber Link

Passive timing stabilization over a 33-km single mode fiber link using temporal imaging

2018 ◽  
Author(s):  
Jasper R. Stroud ◽  
Olukayode Okusaga ◽  
Gregory Weaver ◽  
Nelli Mosavi ◽  
Mark A. Foster
Keyword(s):  
Single Mode ◽  
Single Mode Fiber ◽  
Fiber Link

scholarly journals Frequency-Octupling Millimeter-Wave Optical Vector Signal Generation via an I/Q Modulator-Based Sagnac Loop

Symmetry ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 84
Author(s):  
Zhixian Yang ◽  
Kun Qu ◽  
Xiang Liu
Keyword(s):  
Millimeter Wave ◽  
Wave Vector ◽  
Chromatic Dispersion ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Optical Fields ◽  
Wave Nature ◽  
Shift Keying ◽  
Frequency Octupling ◽  
Vector Signal

A new method for generating frequency-octupling millimeter-wave (mm-wave) vector signals in optical fields via a Sagnac loop is proposed. In this scheme, two orthogonally polarized fourth order sidebands can be obtained through an integrated dual-polarization quadrature phase shift keying (DP-QPSK) modulator. The two optical sidebands are sent into an I/Q modulator-based Sagnac loop. The I/Q modulator is modulated by a 16QAM baseband signal. In the Sagnac loop, one of the sidebands is modulated by the baseband vector signal along one direction, and the other sideband is unmodulated along the opposite direction because the I/Q modulator has the traveling-wave nature. Thanks to this modulation property and the symmetrical structure of the Sagnac loop, a frequency-octupling mm-wave vector signal that is free from interband beating and fiber chromatic dispersion interference can be generated by the photodetector (PD). After simulating a 20 km single-mode fiber (SMF) transmission, the generated frequency-octupling vector signal was good in function.

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