Title :
Numerical studies in twin core directional couplers using asymmetric nonlinear refractive index profiles
Author :
Sombra, Antônio Sèrgio Bezerra ; Nòbrega, Klèber Zuza ; Silva, Márcio Gomes da
Author_Institution :
Univ. Fed. de Ceara, Brazil
Abstract :
Nonlinear directional couplers including an increasing self-phase modulation profile are examined. In this case, the asymmetry is associated with one channel having an unitary steady value while the other will have a different nonlinear refractive index profile. Looking at the transmission characteristics of the device, one observes that it is possible to decrease greatly the critical power or to present regions of multistability depending on which channel the power is pumped. It is concluded that the asymmetry can lead the coupler to operate in a multivalued function of the critical power for certain values of nonlinear parameters
Keywords :
nonlinear optics; optical directional couplers; refractive index; self-phase modulation; asymmetric nonlinear refractive index profiles; critical power; multistability; multivalued function; nonlinear parameters; nonlinear refractive index profile; self-phase modulation profile; transmission characteristics; twin core directional couplers; unitary steady value; Couplings; Directional couplers; Kerr effect; Nonlinear optics; Optical frequency conversion; Optical refraction; Optical waveguides; Quantum well devices; Refractive index; Waveguide transitions;
Conference_Titel :
Microwave and Optoelectronics Conference, 1999. SBMO/IEEE MTT-S, APS and LEOS - IMOC '99. International
Conference_Location :
Rio de Janeiro
Print_ISBN :
0-7803-5807-4
DOI :
10.1109/IMOC.1999.867091
