Title :
Optically controlled contradirectional coupler
Author :
Coriasso, C. ; Campi, D. ; Faustini, L. ; Stano, A. ; Cacciatore, C.
Author_Institution :
CSELT, Torino, Italy
fDate :
3/1/1999 12:00:00 AM
Abstract :
A multiple-quantum-well optically controlled contradirectional coupler has been realized following the design criteria discussed here and elucidated by the simulations. Our room-temperature experiments show a power-dependent contradirectional coupling condition, allowing optically controlled switching between two output channels with control energies on the order of 1 pJ, and at a wavelength around 1.55 μm. The device is treated theoretically by a coupled mode analysis in order to compute the linear and nonlinear transmission spectra at the two output ports. The effects induced by the propagation of intense control beams are modeled using a nonlinear two-dimensional beam propagation method
Keywords :
coupled mode analysis; optical communication equipment; optical design techniques; optical directional couplers; semiconductor quantum wells; 1 pJ; 1.55 mum; control beams; control energies; coupled mode analysis; design criteria; linear transmission spectra; multiple-quantum-well optically controlled contradirectional coupler; nonlinear transmission spectra; optically controlled contradirectional coupler; output channels; output ports; power-dependent contradirectional coupling condition; room-temperature experiments; two-dimensional beam propagation method; Nonlinear optical devices; Nonlinear optics; Optical control; Optical coupling; Optical crosstalk; Optical pumping; Optical refraction; Optical variables control; Optical waveguides; Quantum well devices;
Journal_Title :
Quantum Electronics, IEEE Journal of
