Complete temporal pulse characterization based on phase reconstruction using optical ultrafast differentiation (PROUD)

Li, Fangxin; Park, Yongwoo; Azaña, José

doi:10.1364/ol.32.003364

Cited by 72 publications

(48 citation statements)

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“…Thus, different differentiation orders can be realized simultaneously at different resonant wavelengths by launching multiple pump light-waves. For instance, two pump light-waves at 1 The TPA process occurs between the signal and each pump light-wave, and the free carrier is generated by both of the pump light-waves. Therefore, compared with the signal-pump configuration with 1 50 P P = mW or 2 70 P P = mW, the intracavity loss is increased and the differentiation order is decreased.…”

Section: Resultsmentioning

confidence: 99%

“…The temporal photonic differentiator is a basic element which can implement the time derivative of the complex envelope of the input optical pulse. It can be used in a wide range of applications, such as ultrafast all-optical computing [1], pulse shaping and coding [2][3][4], dark-soliton detection [5], and Hermite-Gaussian waveforms generation [6]. Different schemes have been proposed to realize the temporal differentiation based on the interferometers, fiber gratings, programmable pulse shapers, photonic crystal nanocavities, and microring resonators [7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

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Tunable fractional-order photonic differentiator based on the inverse Raman scattering in a silicon microring resonator

Jin¹,

Yuan²,

Yu³

et al. 2015

Opt. Express

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Northumbria University has developed Northumbria Research Link (NRL) to enable users to access the University's research output. Copyright © and moral rights for items on NRL are retained by the individual author(s) and/or other copyright owners. Single copies of full items can be reproduced, displayed or performed, and given to third parties in any format or medium for personal research or study, educational, or not-for-profit purposes without prior permission or charge, provided the authors, title and full bibliographic details are given, as well as a hyperlink and/or URL to the original metadata page. The content must not be changed in any way. Full items must not be sold commercially in any format or medium without formal permission of the copyright holder. The full policy is available online: http://nrl.northumbria.ac.uk/policies.html This document may differ from the final, published version of the research and has been made available online in accordance with publisher policies. To read and/or cite from the published version of the research, please visit the publisher's website (a subscription may be required.) Abstract: A novel photonic fractional-order temporal differentiator is proposed based on the inverse Raman scattering (IRS) in the side-coupled silicon microring resonator. By controlling the power of the pump lightwave, the intracavity loss is adjusted and the coupling state of the microring resonator can be changed, so the continuously tunable differentiation order is achieved. The influences of input pulse width on the differentiation order and the output deviation are discussed. Due to the narrow bandwidth of IRS in silicon, the intracavity loss can be adjusted on a specific resonance while keeping the adjacent resonances undisturbed. It can be expected that the proposed scheme has the potential to realize different differentiation orders simultaneously at different resonant wavelengths. Yang, and X. Zhang, "Arbitrary-order bandwidth-tunable temporal differentiator using a programmable optical pulse shaper," IEEE Photon.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Tunable fractional-order photonic differentiator based on the inverse Raman scattering in a silicon microring resonator

Jin¹,

Yuan²,

Yu³

et al. 2015

Opt. Express

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“…However, these techniques are typically not ideal, as these rely in the use of nonlinearities, which can prove to be a drawback in the characterization of low-power telecommunications signals. In this context, Phase Reconstruction using Optical Ultrafast Differentiation (PROUD) is a set of direct selfreferenced techniques well adapted for the characterization of lowpower telecom signals [8]- [11]. Nonetheless, to our knowledge, no results have been reported in the literature to validate the use of PROUD for signal characterization in fiber-optics propagation experiments.…”

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confidence: 99%

PROUD-based method for simple real-time in-line characterization of propagation-induced distortions in NRZ data signals

Martins¹,

Pastor-Graells

Cortés

et al. 2015

Opt. Lett.

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A simple, in-line method for real-time full characterization (amplitude and phase) of propagation distortions arising due to group velocity dispersion and self-phase modulation on 10-20 Gbps transmitted NRZ optical signals is reported. It is based on phase reconstruction using optical ultrafast differentiation (PROUD), a linear and self-referenced technique. The flexibility of the technique is demonstrated by characterizing different data stream scenarios. Experimental results were modelled using conventional propagation equations, showing good agreement with the measured data. It is envisaged that the proposed method could be used in combination with DSP techniques for the estimation and compensation of propagation distortions in fiber links, not only in conventional IM/DD systems but also in coherent systems with advanced modulation formats.

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“…© 2013 Optical Society of America OCIS codes: 060.3735, 200.4740, 230.1150, 320.5540, 320.7080. Optical differentiators were first proposed by Ngo and Binh [1], and constitute a basic device to analogue alloptical signal processing [2][3][4][5]. They perform a temporal differentiation of the complex field envelop (both amplitude and phase) of an arbitrary optical input signal at operation speeds several orders of magnitude higher than is possible using electronics.…”

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confidence: 99%

Experimental demonstration of an optical differentiator based on a fiber Bragg grating in transmission

et al. 2013

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We report the first experimental demonstration of single transmissive fiber Bragg grating implementation of a first-order optical differentiation. The device has been designed and fabricated, and the experimental results show a good performance over an operational bandwidth of ∼2 nm. © 2013 Optical Society of America OCIS codes: 060.3735, 200.4740, 230.1150, 320.5540, 320.7080. Optical differentiators were first proposed by Ngo and Binh [1], and constitute a basic device to analogue alloptical signal processing [2][3][4][5]. They perform a temporal differentiation of the complex field envelop (both amplitude and phase) of an arbitrary optical input signal at operation speeds several orders of magnitude higher than is possible using electronics. Many different schemes have been previously proposed [6][7][8][9][10][11][12][13]. Overall, fiber grating approaches [8][9][10][11][12][13], both fiber Bragg grating (FBG) and long period grating (LPG), are simple all-fiber approaches with interesting advantages, such as low cost, low insertion losses, and full compatibility with fiber optic systems. Although the LPG approach proposed in [9] have been proved to have a good performance in a regime of huge bandwidths (up to 19 nm), FBGs may be preferred in applications with a bandwidth up to a few nm, because of the extreme sensitivity of LPGs to environmental fluctuations [9]. However, the FBG approaches proposed in [9-12] inevitably require one or more additional optical elements, such as an optical circulator, coupler, or additional fiber grating to obtain a first-order differentiator. An extremely simple, single optical-element FBG approach was proposed in [13] for first-order differentiation. It is well-known that the amplitude and phase of an FBG in transmission are related by the logarithmic Hilbert transform relation [14]. Using this relationship in the design process, it was theoretically and numerically demonstrated that a single FBG in transmission can be designed to simultaneously approach the amplitude and phase of a first-order differentiator spectral response, without the need for any additional elements.In this Letter, we design, numerically simulate, and fabricate a first-order optical differentiator based on an FBG in transmission, using the ideas introduced in [13]. To prove the concept, we characterized the FBG with an optical vector analyzer, and performed an experiment of optical pulse differentiation where the signals were characterized using an optical spectrum analyser (OSA) and a second harmonic generation (SHG) frequency resolved optical gating (FROG) system [15].The spectral response of the ideal first-order differentiator is H diff ω F out ω∕F in ω jω, where ω is the base-band angular pulsation, i.e., ω ω opt − ω 0 , ω opt is the optical angular pulsation, ω 0 is the central angular frequency of the signals, and j is the imaginary unit. This spectral response presents a π-phase shift at ω 0.As it was demonstrated in [13], an FBG in transmission can simultaneously obtain the amplitude and pha...

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Complete temporal pulse characterization based on phase reconstruction using optical ultrafast differentiation (PROUD)

Cited by 72 publications

References 0 publications

Tunable fractional-order photonic differentiator based on the inverse Raman scattering in a silicon microring resonator

Tunable fractional-order photonic differentiator based on the inverse Raman scattering in a silicon microring resonator

PROUD-based method for simple real-time in-line characterization of propagation-induced distortions in NRZ data signals

Experimental demonstration of an optical differentiator based on a fiber Bragg grating in transmission

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