Spectral-Efficient Flexible Optical Multicasting in a Periodically Poled Lithium Niobate Waveguide

Meloni, G.; Vercesi, Valeria; Scaffardi, M.; Bogoni, Antonella; Potì, L.

doi:10.1109/jlt.2015.2480423

Cited by 7 publications

(1 citation statement)

References 26 publications

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“…Recently, broadband wavelength converters based on second-order nonlinear-optical effect in quasi-phase matched (QPM) waveguides have attracted much attentions thank to their ultrafast optical responses, large nonlinear coefficients, negligible spontaneous emission noise, low cross-talk and complete transparency [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. Besides the wavelength conversion function, these devices can be also used to realize modulation format conversion [15,16], signal optical multicasting [17,18] and logical XOR operation [19]. Difference frequency generation [2][3][4] (DFG) is the simplest approach to achieve wavelength conversion in QPM waveguides.…”

Section: Introductionmentioning

confidence: 99%

Broadband wavelength converters with flattop responses based on cascaded second-harmonic generation and difference frequency generation in Bessel-chirped gratings

Liu¹,

Djordjević²,

Song³

et al. 2016

Opt. Express

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We investigate ultra-broadband wavelength converters based on cascaded second-harmonic generation and difference frequency generation using Bessel-chirped gratings (BCGs) in lithium niobate waveguides, and compare them to the ones using uniform grating and segmented grating, respectively. For the same length and power, the BCGs show broader bandwidth than the other two types of grating. The ripple of the matching response is very small as well. Analysis also shows that almost the same conversion bandwidth and maximum conversion efficiency with tolerant response flatness can be achieved when the manufacturing tolerance of the waveguide length is smaller than 0.1 cm.

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