Polarization Insensitive Wavelength Conversion in a Few Mode Fibre

Parmigiani, P.; Guasoni, Massimiliano; Anjum, Omar F.; Horák, Péter; Jung, Yongmin; Grüner-Nielsen, L.; Petropoulos, P.; Richardson, David J.

doi:10.1109/ecoc.2017.8346212

Cited by 3 publications

(4 citation statements)

References 4 publications

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“…A schematic of the phase matching process of IM-FWM for the I BS,r or I BS,b , respectively, is illustrated in Fig. 1 (bottom panel) [4,6,16,25], where the inverse group velocity (v −1 g ) curves of the modes supported in a multimode waveguide are shown as a function of frequency. Phase matching for the I BS,r idler is satisfied when the following equation is fulfilled:…”

Section: Dual-pump Bragg Scattering Im-fwm Schemementioning

confidence: 99%

Intermodal Dispersive Wave Generation in Silicon Nitride Waveguides

Lüpken

Timmerkamp

Scheibinger

et al. 2020

OSA Advanced Photonics Congress (AP) 2020 (IPR, NP, NOMA, Networks, PVLED, PSC, SPPCom, SOF)

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Dispersion engineering in optical waveguides allows applications relying on the precise control of phase matching conditions to be implemented. Although extremely effective over relatively narrow band spectral regions, dispersion control becomes increasingly challenging as the bandwidth of the process of interest increases. Phase matching can also be achieved by exploiting the propagation characteristics of waves exciting different spatial modes of the same waveguide. Phase matching control in this case relies on achieving very similar propagation characteristics across two, and even more, waveguide modes over the wavelengths of interest, which may be rather far from one another. We demonstrate here that broadband (>40 nm) four-wave mixing can be achieved between pump waves and a signal located in different bands of the communications spectrum (separated by 50 nm) by exploiting interband nonlinearities. Our demonstration is carried out in the silicon-rich silicon nitride material platform, which allows flexible device engineering, allowing for strong effective nonlinearity at telecommunications wavelengths without deleterious nonlinear-loss effects.

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Section: Dual-pump Bragg Scattering Im-fwm Schemementioning

confidence: 99%

Intermodal Dispersive Wave Generation in Silicon Nitride Waveguides

Lüpken

Timmerkamp

Scheibinger

et al. 2020

OSA Advanced Photonics Congress (AP) 2020 (IPR, NP, NOMA, Networks, PVLED, PSC, SPPCom, SOF)

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“…1 in our experiment, the two pumps, P 1 and P 2 , were launched into the fundamental TE00 mode, while the signal and the generated idlers were in the first order, TE10, mode. A cartoon of the operational principle of how to achieve phase matched inter-modal FWM for the I BS,r or I BS,b , respectively, is illustrated in Fig.2 [13], [12], [18], [19], where the inverse group velocity (v −1 g ) curves of the modes supported in a multi-mode waveguide are shown as a function of wavelength. Phase matching is satisfied when the following equation is (almost) fulfilled:…”

Section: Principle Of Operation and Waveguide Modelingmentioning

confidence: 99%

“…In this work, we demonstrate the uni-directionality of the FWM BS process by exploiting the spatial modes of a multi-mode silicon waveguide. The extra degree of freedom given by the capability to carefully excite and control higher order modes in multi-mode nonlinear waveguides offers more options to fulfill the required phase matching [12], [13], [14], [15], [16]. Thus, multiple discrete spectral bands can be simultaneously phase matched, leading to simple scalable and controllable discrete wavelength converters that can be largely detuned from the pump(s) wavelengths by exciting phase matched and dispersion tailored modes of a single multi-mode nonlinear waveguide.…”

Section: Introductionmentioning

confidence: 99%

Intermodal Bragg-Scattering Four Wave Mixing in Silicon Waveguides

Lacava

Ettabib

Bucio

et al. 2019

J. Lightwave Technol.

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We demonstrate optical wavelength conversion in a multi-mode silicon waveguide using four wave mixing (FWM) Bragg scattering (BS) enabled by a dual-pump CW scheme. The original signal and the generated idler pair excite one spatial mode (first TE mode), while the two pumps excite a different spatial mode (second TE mode) of the same waveguide. Our approach exploits the differences in the group velocities of the various supported spatial modes to ensure phase matching only for the desired nonlinear process. In this proof-of-principle experiment, any unintended idlers are generated with an extinction ratio up to 12 dB relative to the phase-matched idlers for a pumps-to-signal-idler-pair wavelength detuning of about 70 nm. The scalability of the scheme to achieve larger and multiple signal wavelength detunings from the pump frequencies is also discussed.

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“…In single-mode systems, this pump-topump frequency spacing (pp) is typically only of the order of hundreds of gigahertz due to the specific fibre dispersion profiles. Using a 1 km long three-mode fibre we previously demonstrated intermodal FWM processes in multiple distinct bands (within the C-band or between the C-and L-bands), by simply exciting different HOMs of the same fibre [1][2] . For the intermodal BS FWM case, we have already shown the potential to only phase-match a specific nonlinear process, the BS red-shifted (BSr) one 2 .…”

Section: Introductionmentioning

confidence: 99%