Photonic chip based ultrafast optical processing based on high nonlinearity dispersion engineered chalcogenide waveguides

Eggleton, Benjamin J.; Vo, Trung D.; Pant, Ravi; Schr, J.; Pelusi, Mark; Choi, Duk‐Yong; Madden, Steve; Luther‐Davies, Barry

doi:10.1002/lpor.201100024

Cited by 81 publications

(60 citation statements)

References 79 publications

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“…An electro-optic modulator is used create RF-sidebands from an optical carrier. The modulated signal is injected into a nonlinear chalcogenide optical waveguide [48,49] as the probe of an SBS process, while an SBS pump is injected from the opposite end. Our filter relies on precise phase-and amplitude tailoring of the RF-modulated optical spectrum at the input of the SBS filter ( Figure 1c).…”

Section: Enhancing Filter Suppression By Spectral Tailoringmentioning

confidence: 99%

Low-power, chip-based stimulated Brillouin scattering microwave photonic filter with ultrahigh selectivity

Marpaung

Morrison

Pagani

et al. 2015

Optica

344

213

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Highly selective and reconfigurable microwave filters are of great importance in radiofrequency signal processing. Microwave photonic (MWP) filters are of particular interest, as they offer flexible reconfiguration and an order of magnitude higher frequency tuning range than electronic filters. However, all MWP filters to date have been limited by trade-offs between key parameters such as tuning range, resolution, and suppression. This problem is exacerbated in the case of integrated MWP filters, blocking the path to compact, high performance filters. Here we show the first chip-based MWP band-stop filter with ultra-high suppression, high resolution in the MHz range, and 0-30 GHz frequency tuning. This record performance was achieved using an ultra-low Brillouin gain from a compact photonic chip and a novel approach of optical resonance-assisted RF signal cancellation. The results point to new ways of creating energy-efficient and reconfigurable integrated MWP signal processors for wireless communications and defence applications.The explosive growth in mobile communications demands radio-frequency (RF) technologies with exceptional spectral efficiency such as cognitive radios, which can adapt their frequencies to exploit the available spectrum in real-time [1,2]. Such frequency-agile systems will benefit hugely from RF filters that can be tuned over many gigahertz whilst keeping high MHz-scale resolution and high selectivity to prevent severe interference due to spectrumsharing. While this is difficult to achieve with all-electronic filters [3][4][5][6][7], integrated microwave photonic (IMWP) filters [8] can readily achieve multi-gigahertz tuning range without significant degradation in their frequency response. However, these filters typically exhibit limited resolution (GHz instead of MHz linewidths) and are plagued by trade-offs between key parameters, such as between the frequency tuning range and the resolution for multi-tap filters [9][10][11][12][13]; or between the peak rejection and the resolution for resonator-based filters [14][15][16][17][18].Stimulated Brillouin scattering (SBS) [19][20][21][22] offers a route to MHz-resolution IMWP filters. Although SBS has been widely studied in optical fibers, recently there has been a growing interest in harnessing SBS in nanophotonic waveguides [22][23][24][25][26][27]. The ability to control the coherent interaction of photons and acoustic phonons in chip-sized devices (as opposed to in optical fibers many kilometres long) promises not only fascinating new physical insights, but also opens the path to realising key technologies on-chip including slow light [28,29]; narrow linewidth lasers [30]; optical frequency combs [31,32]; RF signal processing [33][34][35] and filtering [36][37][38][39][40]. In particular, SBS filters can exhibit linewidths of the order of 10-100 MHz. Such a high resolution is unmatched by most on-chip devices because it requires extremely low material losses and impractically-large devices [41].Although IMWP filters exploiting SBS on ch...

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Section: Enhancing Filter Suppression By Spectral Tailoringmentioning

confidence: 99%

Low-power, chip-based stimulated Brillouin scattering microwave photonic filter with ultrahigh selectivity

Marpaung

Morrison

Pagani

et al. 2015

Optica

344

213

View full text Add to dashboard Cite

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“…Bulk material modification based on focused femtosecond irradiation has attracted wide interest for the fabrication of photonics devices such as waveguides [1], Fresnel optics [2], active on-chip devices [3] or micro-fluidic structures [4]. Besides its true 3D structuring capabilities [5], simple implementation of device changes and cost-reduction for small value production are some of this technology's advantages.…”

Section: Discussionmentioning

confidence: 99%

Femtosecond Single-Pulse Absorption in Semiconductors with varying Dopant Concentration

Ramme

Housman

Mingareev

et al. 2013

MATEC Web of Conferences

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The influence of dopant concentration on the absorption of femtosecond mid-IR pulses is described. The measured results are compared to a theoretical absorption model. SummaryBulk material modification based on focused femtosecond irradiation has attracted wide interest for the fabrication of photonics devices such as waveguides [1], Fresnel optics [2], active on-chip devices [3] or micro-fluidic structures [4]. Besides its true 3D structuring capabilities [5], simple implementation of device changes and cost-reduction for small value production are some of this technology's advantages. However, so far it has mainly been applied to dielectric host-materials, such as transparent glasses or crystals. Full integration towards silicon photonics has not been achieved. Extending 3D femtosecond laser direct write (FLDW) technology from such dielectric materials towards semiconductor materials could enable new applications for micro-electronic processing.

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“…Irina V. Kabakova, (1) Duk-Yong Choi, (3) Steve J. Madden, (3) Barry Luther-Davies, (3) and Ravi Pant…”

Section: On-chip Stimulated Brillouin Scattering and Its Applicationsmentioning

confidence: 99%

“…Here we review our recent work on exciting SBS in a chalcogenide photonic-chip [2][3][4] and its application to a number of signal processing tasks such as slow-and fast-light induced tunable delay [5], Brillouin dynamic gratings [6], microwave photonic filters [7][8][9] and Brillouin laser [10]. The key to these demonstrations was the large Brillouin scattering cross-section (g B ~ 0.74 x 10 -9 m/W) and small mode area (A eff ~ 2.3 µm 2 ) of the photonic chip [4], which resulted in large gain at low powers.…”

Section: Introductionmentioning

confidence: 99%

On-chip stimulated Brillouin scattering and its applications

et al. 2013

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We review recent demonstration of stimulated Brillouin scattering in a chalcogenide photonic chip and its application to optical and microwave signal processing tasks. The interaction between light and sound via stimulated Brillouin scattering (SBS) was exploited in chalcogenide photonic circuits to achieve on-chip SBS slow and fast light, microwave photonic filters, and dynamic gratings using travelling-wave geometry. Using a ring-resonator geometry, photonic-chip based Brillouin laser was demonstrated.

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Photonic chip based ultrafast optical processing based on high nonlinearity dispersion engineered chalcogenide waveguides

Cited by 81 publications

References 79 publications

Low-power, chip-based stimulated Brillouin scattering microwave photonic filter with ultrahigh selectivity

Low-power, chip-based stimulated Brillouin scattering microwave photonic filter with ultrahigh selectivity

Femtosecond Single-Pulse Absorption in Semiconductors with varying Dopant Concentration

On-chip stimulated Brillouin scattering and its applications

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