Title :
Polarization- and wavelength-insensitive guided-wave optical switch with semiconductor Y junction
Author :
Yanagawa, Hisaharu ; Ueki, Ken ; Kamata, Yoshiyuki
Author_Institution :
Furukawa Electr. Co., Chiba, Japan
fDate :
8/1/1990 12:00:00 AM
Abstract :
A polarization- and wavelength-insensitive semiconductor guided-wave optical switch with a Y junction is proposed. The switch exhibits a digital response with respect to current, allowing its use as a wavelength-insensitive 1×2 optical switch. The switching characteristics are analyzed by using the beam propagation method, and a design example is given. The polarization- and wavelength-insensitive switching operation has been confirmed with a fabricated GaAs/GaAlAs switch at wavelengths of 1.3 and 1.55 μm, and the on/off ratio exceeded 20 dB at an injection current of 250 mA at these wavelengths
Keywords :
III-V semiconductors; aluminium compounds; gallium arsenide; integrated optics; light polarisation; light propagation; optical communication equipment; optical switches; optical waveguides; 1×2 optical switch; 1.3 to 1.55 micron; 250 mA; GaAs-GaAlAs; beam propagation method; current; digital response; guided-wave optical switch; polarisation insensitivity; semiconductor Y junction; switching characteristics; wavelength-insensitive; Dispersion; Filling; Optical fiber polarization; Optical polarization; Optical switches; Optical waveguides; Plasma waves; Refractive index; Waveguide junctions; Waveguide transitions;
Journal_Title :
Lightwave Technology, Journal of
