Open AccessOptimal design for the quasi-phase- matching three-wave mixing
Author(s) -
Xueming Liu,
Hanyi Zhang,
Yanhe Li
Publication year - 2001
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.9.000631
Subject(s) - optics , bandwidth (computing) , four wave mixing , grating , wavelength , physics , phase matching , quasi phase matching , signal processing , energy conversion efficiency , nonlinear optics , materials science , optoelectronics , computer science , telecommunications , laser , radar
Expressions for the quasi-phase-matching (QPM) three-wave mixing (TWM) with arbitrary grating structure and phase shift are obtained in this paper, for the first time, under the small-signal approximation. The expressions can be extensively applied to the all-optical signal processing for TWM, in which the signal and pump bandwidth of the wavelength conversion in DFM and the all-optical gate (AOG) bandwidth in SFM are all optimized. The optimal results from our expressions are compared with the results from the coupled-mode equations of QPM-TWM. Compared with loss free, the propagation loss in waveguides can decrease the conversion efficiency, but only a little change for the bandwidth.