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Photonic bandgap structures in planar nonlinear waveguides: application to squeezed-light generation

Tricca, D; Sibilia, C; Severini, S; Bertolotti, M; Scalora, M; Bowden, CM; Sakoda, K; (2004) Photonic bandgap structures in planar nonlinear waveguides: application to squeezed-light generation. J OPT SOC AM B , 21 (3) 671 - 680.

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Abstract

Quadrature-amplitude and phase squeezing are theoretically investigated in a planar waveguide geometry where the use of a linear grating fabricated on top of the waveguide reproduces a photonic bandgap structure. The introduction of a nonlinear grating, obtained with a modulation of the nonlinear susceptibility chi((2)), provides an additional degree of freedom that allows, together with the linear grating, tuning of the fundamental field in a selected resonance of the transmission spectrum and, at the same time, control of the phase-matching condition between the fundamental and second-harmonic fields. The results show that quadrature-amplitude squeezing is achieved for the fundamental field, increasing the second-harmonic input intensity. The second-harmonic field is tuned in the passband of the photonic bandgap. The low nonlinear conversion efficiency, given by a suitable selection of the mismatch, gives rise to the possibility of having a fundamental field of quite the same intensity, but less noisy than at the entry. (C) 2004 Optical Society of America.

Type:Article
Title:Photonic bandgap structures in planar nonlinear waveguides: application to squeezed-light generation
Keywords:2ND-HARMONIC GENERATION, 2ND-ORDER INTERACTION, LITHIUM-NIOBATE, GAP STRUCTURES, PHASE, ENHANCEMENT

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