All-optical signal processing technologies in flexible optical networks

Ji, Yuefeng; Wang, Hongxiang; Cui, Jiabin; Yu, Meitong; Yang, Zhitian; Bai, Lin

doi:10.1007/s11107-019-00838-y

Cited by 53 publications

(23 citation statements)

References 123 publications

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“…However, they are of great future interest, particularly for fiber lasers operating at wavelengths not accessible with dopants in glasses, for example, 215,216 and enhanced fiber nonlinear optics 217 . A game changer for nonlinear fiber optics would be the development of suitably low loss and dispersion tailored acentric crystalline phases possessing a nonzero χ (2) nonlinearity, enabling a wide range of electro‐optic and wave‐mixing effects 218,219 …”

Section: Areas For Continued Study and Developmentmentioning

confidence: 99%

“…217 A game changer for nonlinear fiber optics would be the development of suitably low loss and dispersion tailored acentric crystalline phases possessing a nonzero χ (2) nonlinearity, enabling a wide range of electro-optic and wave-mixing effects. 218,219 Continued advancements in fiber processing have played an important role in both crystal-core optical fibers and the previously mentioned crystal-derived all-glass optical fibers. Though the resultant fiber core compositions and (molecular) structures are different in these two cases, they share a common potential to drive forward whole new families of optical fibers with novel and useful properties (see, for example, Table 1).…”

mentioning

confidence: 99%

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Glass: The carrier of light—Part II—A brief look into the future of optical fiber

Ballato

Dragic

2020

Int J of Appl Glass Sci

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Section: Areas For Continued Study and Developmentmentioning

confidence: 99%

mentioning

confidence: 99%

Glass: The carrier of light—Part II—A brief look into the future of optical fiber

Ballato

Dragic

2020

Int J of Appl Glass Sci

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“…However, this kind of trial and error method is inconvenient, and high pump power is often needed to compensate the power of idler compared with signal. In our vector PSA scheme, the power ratio is adjusted by simply rotating polarizer axis (changing α) since variable α is introduced to the coefficient m', see (4). Arbitrary GER (defined as gain extinction ratio, and in return the performance of phase compression) is available with fixed power setting and even low optical nonlinearity.…”

Section: Operating Principlementioning

confidence: 99%

“…However, it gives rise to a demand of signal regeneration, since phase modulated signals are susceptible to more factors such as nonlinear noise. All-optical signal processing with fast response, high energy efficiency, and large-bandwidth provision provides efficient signal regeneration methods and attracts considerable attention in decades [4].…”

Section: Introductionmentioning

confidence: 99%

QPSK Signal Regeneration Based on Vector Phase Sensitive Amplification With Low Pump Powers

Xing

Wang

2019

IEEE Access

Self Cite

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In this paper, an all-optical quadrature phase shift keying (QPSK) phase regeneration scheme using vector phase sensitive amplification (PSA) is proposed, analyzed, and simulated. Compared with the conventional scalar PSA scheme, the vector superposition of harmonics makes it easy to obtain high gain extinction ratio (GER) with low pump powers. A subsequent phase-preserving amplitude regenerating device is also introduced to achieve full-quadrature regeneration of signal without phase conjugation and frequency conversion. In addition to the theoretical analysis of the implementation principle, a series of simulation results' analysis, including comparison with traditional scheme and regeneration performance assessment, is also included. The results show that undesired harmonics are greatly reduced by nearly 40 dB, and high GERs are available independent of input power. What is more, various levels of phase and amplitude noise can be effectively compressed for 10-Gbd QPSK signal. The regeneration system also reduces the signal bit error rate and gets 2-dB receiver optical signal noise ratio (OSNR) improvements at 13-dB OSNR input, which has potential applications in enhancing transmission distance in the future optical communication network.INDEX TERMS All-optical signal regeneration, optical fiber communication, optical signal processing, optical polarization, phase sensitive amplification, quadrature phase shift keying.

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“…Intense research and development of photonic integrated circuits have been conducted to eliminate many optical-to-electrical and back-to-optical (OEO) conversions in optical communication networks by enabling signal processing in the optical domain, i.e., all-optical signal processing [1][2][3][4]. The idea of all-optical signal processing relies on integrated optical devices with strong nonlinear optical interactions, in contrast to the conventional integrated technologies for the transmitters and receivers that do not require optical nonlinearity [4]. Among many material platforms under development for all-optical signal processing, the III-V semiconductor aluminum gallium arsenide (Al-GaAs) stands out due to its superior nonlinear optical properties [5,6].…”

Section: Introductionmentioning

confidence: 99%

Tunable Four-Wave Mixing in AlGaAs Waveguides of Three Different Geometries

Espinosa,

Awan,

Odungide

et al. 2020

Preprint

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The AlGaAs material platform has been intensively used to develop nonlinear photonic devices on-a-chip, thanks to its superior nonlinear optical properties. We propose a new AlGaAs waveguide geometry, called half-core etched, which represents a compromise between two previously studied geometries, namely the nanowire and strip-loaded waveguides, combining their best qualities. We performed tunable four-wave mixing (FWM) experiments in all three of these geometries in the telecommunications C-band (wavelengths around 1550 nm), with a pulsed pump beam and a continuous-wave (CW) signal beam. The maximum FWM peak efficiencies achieved in the nanowire, strip-loaded and half-core geometries were about −5 dB, −8 dB and −9 dB, respectively. These values are among the highest reported in AlGaAs waveguides. The signal-to-idler conversion ranges were also remarkable: 161 nm for the strip-loaded and half-core waveguides and 152 nm for the nanowire. Based on our findings, we conclude that the half-core geometry is an alternative approach to the nanowire geometry, which has been earlier deemed the most efficient geometry, to perform wavelength conversion in the spectral region above the half-bandgap. Moreover, we show that the half-core geometry exhibits fewer issues associated with multiphoton absorption than the nanowire geometry.

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All-optical signal processing technologies in flexible optical networks

Cited by 53 publications

References 123 publications

Glass: The carrier of light—Part II—A brief look into the future of optical fiber

Glass: The carrier of light—Part II—A brief look into the future of optical fiber

QPSK Signal Regeneration Based on Vector Phase Sensitive Amplification With Low Pump Powers

Tunable Four-Wave Mixing in AlGaAs Waveguides of Three Different Geometries

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