Title :
Mode coupling through a long period grating of χ
Author :
Belanger, Normand ; Villeneuve, Alain
Author_Institution :
Materiaux et Telecommun., INRS Energie, Varennes, Que.
fDate :
Oct. 29 2006-Nov. 2 2006
Abstract :
Long period grating provide a perturbation allowing the coupling of two asynchronous copropagating compound mode or supermodes. In a nonlinear directional coupler (NLDC), by varying the intensity, the output will change according to the relative phase between the two supermodes. By combining these effects, nonlinear grating assisted couplers have been suggested. In this paper we are proposing, to not only study the effect of a linear index grating but also the effect of a grating of the nonlinear refractive index (n2). Recent experimental results with intermixed quantum wells and with photoexposed chalcogenide glasses have shown that variation in n2 of more than 100% are possible leading to possible new devices
Keywords :
chalcogenide glasses; diffraction gratings; nonlinear optical susceptibility; optical directional couplers; optical glass; refractive index; semiconductor quantum wells; asynchronous copropagation; chalcogenide glasses; compound mode; intermixed quantum wells; linear index grating; long period grating; mode coupling; nonlinear directional coupler; nonlinear grating; nonlinear refractive index; optical susceptibility; supermodes; Couplings; Directional couplers; Frequency conversion; Glass; Graphics; Gratings; Nonlinear equations; Propagation constant; Refractive index; Scanning probe microscopy;
Conference_Titel :
Lasers and Electro-Optics Society, 2006. LEOS 2006. 19th Annual Meeting of the IEEE
Conference_Location :
Montreal, Que.
Print_ISBN :
0-7803-9556-5
Electronic_ISBN :
0-7803-9555-7
DOI :
10.1109/LEOS.2006.278796
