Multilevel power transfer function characterization of nonlinear optical loop mirror

Wen, Feng; Sygletos, Stylianos; Tsekrekos, Christos P.; Zhou, Xingyu; Geng, Yong; Wu, Baojian; Qiu, Kun; Turitsyn, Sergei K.

doi:10.1109/icton.2017.8025081

Cited by 13 publications

(7 citation statements)

References 12 publications

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“…The intensity modulator is a ''modulator box'' which includes a RF amplifier to control the strength of the input electrical signal and consequently effecting the modulation depth of the optical modulator. The modulator IM1 was driven by an NRZ-PAM4 electrical signal generated by a NRZ-to-PAM4 convertor [19]. Therefore a clean NRZ-PAM4 signal was obtained for the multilevel amplitude operation of the PC-NOLM regenerator.…”

Section: Experimental Setup and Resultsmentioning

confidence: 99%

All-Optical Multilevel Amplitude Regeneration Based on Polarization-Orthogonal Continuous-Wave-Light-Assisted Nonlinear-Optical Loop Mirror (PC-NOLM) Subsystem

Guo

Wen

et al. 2019

IEEE Access

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We demonstrate a multilevel amplitude regeneration experiment for non-return-to-zero 4level pulse amplitude modulated (NRZ-PAM4) signals in the proposed polarization-orthogonal continuouswave-light-assisted nonlinear-optical loop mirror (PC-NOLM) subsystem. A uniform regenerative behavior including the same noise-suppression efficiency and the noise-handling capability is observed across multiple amplitude levels. The pre-phase modulation is carried out for the input signal enabling the multilevel amplitude regeneration directly on highly-spectral-efficient modulated formats. An overall improvement of 2.33 dB is achieved by optimizing the launched optical power and the distortion strength in the all-optical NRZ-PAM4 regeneration experiment. The uniform regenerative performance for the proposed PC-NOLM regenerator is also analyzed numerically to reveal the regenerative mechanism and the influence from the operational parameters.INDEX TERMS All-optical signal regeneration, optical fiber communication, optical signal processing, fiber nonlinear optics, nonlinear optical devices.

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Section: Experimental Setup and Resultsmentioning

confidence: 99%

All-Optical Multilevel Amplitude Regeneration Based on Polarization-Orthogonal Continuous-Wave-Light-Assisted Nonlinear-Optical Loop Mirror (PC-NOLM) Subsystem

Guo

Wen

et al. 2019

IEEE Access

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“…2(a). Other parameters were used in the simulation similar to those reported in the experiment of [7]: the nonlinear coefficient γ was 7W -1 /km, the total loss was 12dB and the fibre length L was 606m. The splitting ratio 2 β of the second NOLM was chosen to be 0.95 which enabled an effective amplitude noise suppression.…”

Section: Gain Optimizationmentioning

confidence: 99%

“…From the transmission port of the first NOLM (i.e. monitoring point 2) we can get the following output signal [7]:…”

Section: Introductionmentioning

confidence: 99%

Mitigation of Amplitude and Phase Distortions by Using Conjugate-NOLM Regenerator

Wen

Yang³

et al. 2018

2018 20th International Conference on Transparent Optical Networks (ICTON)

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In this paper we propose a conjugate nonlinear optical loop mirror scheme (Conj-NOLM) by cascading two NOLMs with an intermediate optical phase conjugator stage (OPC). This new configuration utilizes mid-span spectral inversion to cancel out the nonlinear phase distortion that is introduced by the two NOLM units. Moreover, numerical investigation has been carried out for 16-QAM signals demonstrating increased robustness against accumulated amplitude and phase distortions in the transmission links.

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“…There have been various works done in investigating and mitigating Non-linear effects. Authors in [6][7][8] have been able to able to mitigate the Non-linearities using various methods. The methodologies adopted by the Authors in [6] is using a regenerative system based on SPM with a bandwidth of 10 Gb/s, Authors in [7] have developed a regenerative system based on HNLF, Authors in [8] utilized multimode non-linear fiber with a numerical approach.…”

Section: Introductionmentioning

confidence: 99%

“…Authors in [6][7][8] have been able to able to mitigate the Non-linearities using various methods. The methodologies adopted by the Authors in [6] is using a regenerative system based on SPM with a bandwidth of 10 Gb/s, Authors in [7] have developed a regenerative system based on HNLF, Authors in [8] utilized multimode non-linear fiber with a numerical approach. The work done by these authors has led us to study the benefits of utilizing a system comprising of Er-Yb Fiber to overcome the issues developed in the above works.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study of SPM and XPM in Er-Yb Co-Doped Fiber

Kumar

Qazi

2021

J. Electron. Mater.

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Optical fiber communication has been the most versatile and revolutionary medium of communication that has helped in connecting millions of people across the globe. These traits have seen tremendous development in the sector of optical fiber communication. There are now many desired qualities that are expected out of an optical fiber communication like large transmission capacity and a lesser amount of losses. Communication systems operating with higher transmission rates have found an essential role of non-linear fiber optics. The behaviour of light in non-linear media is dealt with non-linear optics. Cross-Phase Modulation (XPM) and Self-Phase Modulation (SPM) are a few non-linearities occurring in the optical fiber. Non-linear effects reduce the performances of optical fibers. In this paper, a comparative study of non-linear effects in Er-Yb co-doped Fiber are reviewed using simulation and the results are compared with optical systems utilizing normal fiber. Benefits of utilizing Er-Yb fiber has been demonstrated by analysing effective systems comprising the Er-Yb co-doped fiber and their ability to mitigate the non-linearities.

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Multilevel power transfer function characterization of nonlinear optical loop mirror

Cited by 13 publications

References 12 publications

All-Optical Multilevel Amplitude Regeneration Based on Polarization-Orthogonal Continuous-Wave-Light-Assisted Nonlinear-Optical Loop Mirror (PC-NOLM) Subsystem

All-Optical Multilevel Amplitude Regeneration Based on Polarization-Orthogonal Continuous-Wave-Light-Assisted Nonlinear-Optical Loop Mirror (PC-NOLM) Subsystem

Mitigation of Amplitude and Phase Distortions by Using Conjugate-NOLM Regenerator

A Comparative Study of SPM and XPM in Er-Yb Co-Doped Fiber

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