DocumentCode :
3514727
Title :
Nonlinear switching recovery in planar directional coupler with loss
Author :
Sombra, Antonio Sergio Bezerra ; Nobrega, Kleber Zuza
Author_Institution :
Dept. de Fisica, Lab. de Opt. Nao Linear e Ciencia dos Mater., Fortaleza, Brazil
Volume :
2
fYear :
1998
fDate :
9-13 Aug 1998
Firstpage :
405
Abstract :
Twin-core nonlinear directional couplers that include loss and nonlinear refractive index are examined. The inclusion of loss results in the increase of the critical power of the coupler while the switching characteristics deteriorate. To compensate for this behavior associated with the loss, we investigate the effect of the nonlinearity profile on the performance of an increasing nonlinearity coupler. We have shown that appropriate shaping of the nonlinear self-phase modulation profile is quite effective in recovering, almost completely, the original switching behavior associated with the lossless situation. It is concluded that the exponential nonlinearity profile is nearly optimum for the recovery of the lossless switching behavior
Keywords :
optical directional couplers; optical planar waveguides; optical switches; refractive index; self-phase modulation; exponential nonlinearity profile; lossless switching behavior; nonlinear refractive index; nonlinear self-phase modulation profile; nonlinear switching recovery; planar directional coupler; shaping; Couplings; Crystalline materials; Directional couplers; Optical fiber couplers; Optical fiber devices; Performance loss; Propagation losses; Refractive index; Semiconductor materials; Semiconductor waveguides;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Telecommunications Symposium, 1998. ITS '98 Proceedings. SBT/IEEE International
Conference_Location :
Sao Paulo
Print_ISBN :
0-7803-5030-8
Type :
conf
DOI :
10.1109/ITS.1998.718426
Filename :
718426
Link To Document :
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