Wavelength shifting of optical pulses through cascaded second-order processes in a lithium–niobate channel waveguide

Cristiani, Ilaria; Banfi, G. P.; Degiorgio, Vittorio; Tartara, Luca

doi:10.1063/1.124640

Cited by 20 publications

(6 citation statements)

References 14 publications

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“…2 we have calculated the following values for the overlap integral: We see that the pump mode TM 00 can interact most efficiently with the sh modes TE 00 and TE 10 . Less efficient is the predicted interaction with the TE 02 mode, whereas the contribution of the TE 01 mode should be zero for symmetry reasons.…”

Section: Waveguide Characterizationmentioning

confidence: 99%

Wavelength Conversion of an Infrared Signal Through Cascaded Second-Order Nonlinearity in a Lithium-Niobate Channel Waveguide

Cristiani

Rini

Rampulla

et al. 2000

J. Nonlinear Optic. Phys. Mat.

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We describe a wavelength conversion experiment (generation of a pulse at the wavelength λp − ∆λ from a signal at λp + ∆λ under the action of a pump at λp) performed through a cascaded second-order process in a lithium niobate channel waveguide. With a 58-mmlong Ti diffused channel waveguide, λp = 1.1 µm (the wavelength of phase matching for the first step of sh generation), ∆λ of several nanometers and 20 ps pulse duration, wavelength conversion with unit efficiency is obtained with a pump pulse energy of the order of 10 2 pJ. The experimental results are successfully interpreted by making use of modal analysis and solving the appropriate nonlinear equations.

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Section: Waveguide Characterizationmentioning

confidence: 99%

Wavelength Conversion of an Infrared Signal Through Cascaded Second-Order Nonlinearity in a Lithium-Niobate Channel Waveguide

Cristiani

Rini

Rampulla

et al. 2000

J. Nonlinear Optic. Phys. Mat.

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“…Among them, wave-mixing wavelength conversion based on DFG in a QPM PPLN waveguide is attractive for several distinct advantages, such as ultrafast response, large signal bandwidth, the absence of spontaneous noise caused by transition between energy levels, high conversion efficiency (compared with four-wave mixing in fiber), low crosstalk and transparency to bit rate and data format, etc. [2][3][4][5][6][7][8][9][10][11] . However, the use of DFG and current device efficiencies indicate the need for a single mode pump laser with 50-100 mW of power operating in the 750-800-nm range.…”

Section: Introductionmentioning

confidence: 99%

Variable wavelength conversion based on fan-out grating in QPM-LN

Wang

Huang

Weng

et al. 2007

Optoelectronic Materials and Devices II

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In this paper, we demonstrated for the first time variable 1.5μm wavelength conversion through cascaded second order nonlinear processes "SHG+DFG" by fan-out grating in lithium niobate waveguide. We fabricated the waveguide by annealed proton exchange in periodically poled LiNbO 3 (PPLN). The device used in this experiment is 4 cm long, has a QPM period from 14.8μm to 15.2μm, waveguide width of 12μm, proton exchange depth of 0.7μm, and was annealed for 32h at 350℃. After proton exchange in pure benzoic acid using a SiO 2 mask, the substrate was annealed in an oxygen atmosphere. The wavelength of signal light was set at 1551.3 nm. The wavelengths of tunable pump lights we used in experiment were 1543.2 and 1556.2 nm, and the corresponding grating periods were 14.87 μ m and 15.03 μ m, respectively. The temperature was set at 100.5℃ to avoid photo refractive damage and to match the QPM peaks to the pump wavelengths. The conversion efficiency was about 10dB to be expected with the pump power 175mW in a similar device with a slightly different QPM period and operated at 125℃.

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“…The corrugation of the waveguide is suitably selected in order to confine longitudinally the signal and idler modes, while a weak longitudinal confinement of the pump field is assumed. Phase matching for the parametric process is achieved due to the presence of the grating and due to modal dispersion of the guided wave geometry (see, e.g., [7]), although our considerations are not specific to a particular material.…”

Section: Introductionmentioning

confidence: 99%

Nonclassical-light generation in a photonic-band-gap nonlinear planar waveguide

et al. 2004

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The optical parametric process occurring in a photonic-band-gap planar waveguide is studied from the point of view of nonclassical-light generation. The nonlinearly interacting optical fields are described by the generalized superposition of coherent signals and noise using the method of operator linear corrections to a classical strong solution. Scattered backward-propagating fields are taken into account. Squeezed light as well as light with sub-Poissonian statistics can be obtained in two-mode fields under the specified conditions

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Wavelength shifting of optical pulses through cascaded second-order processes in a lithium–niobate channel waveguide

Cited by 20 publications

References 14 publications

Wavelength Conversion of an Infrared Signal Through Cascaded Second-Order Nonlinearity in a Lithium-Niobate Channel Waveguide

Wavelength Conversion of an Infrared Signal Through Cascaded Second-Order Nonlinearity in a Lithium-Niobate Channel Waveguide

Variable wavelength conversion based on fan-out grating in QPM-LN

Nonclassical-light generation in a photonic-band-gap nonlinear planar waveguide

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