Title :
Switching characteristics of variable coupling coefficient nonlinear directional coupler
Author :
Liu, Gang Jun ; Liang, Bin Ming ; Jin, Guo Liang ; Li, Qu
Author_Institution :
Dept. of Phys., Shanghai Jiao Tong Univ., China
fDate :
6/1/2004 12:00:00 AM
Abstract :
This paper analyzes the characteristics of the variable coupling coefficient nonlinear directional coupler (VCC NLDC) in detail. The self-switching transmission curves of three types of NLDC with different coupler length are compared. Their phase-controlled transmission curves are compared, and these device acting as pump-controlled switches are analyzed. It is found that the VCC NLDCs show digital characteristics with the increase of the input power. As phase-controlled devices, the response of the VCC NLDC is binarylike when the input power is high. As pump-controlled devices, the transmission curves of the signal are similar to their self-switching transmission curves, except for some specific details.
Keywords :
light transmission; optical directional couplers; optical switches; binarylike response; nonlinear directional coupler; phase-controlled transmission curves; pump-controlled switches; self-switching transmission curves; switching; variable coupling coefficient; Couplings; Difference equations; Directional couplers; Finishing; Gaussian processes; Helium; Nonlinear equations; Physics; Signal processing; Switches; All-optical switching; NLDC; VCC; nonlinear directional coupler; variable coupling coefficient;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2004.829228
