Title :
The Bragg reflection waveguide directional coupler
Author :
Salzman, Joseph ; Lenz, Gadi
Author_Institution :
Dept. of Electr. Eng., Technion-Israel Inst. of Technol., Haifa, Israel
Abstract :
A directional coupler formed by two Bragg reflection waveguides (BRWs) with a common finite periodic region between them is analyzed. The coupling coefficient is a sensitive function of the index difference in the periodic coupling section. This feature can lead to a novel kind of electrooptic switch. In addition, the BRW directional coupler exhibits dispersion properties characteristic of the periodic bounding media, which can be used to implement a narrowband wavelength filter and a TE polarizer.
Keywords :
directional couplers; electro-optical devices; integrated optics; light reflection; optical couplers; optical dispersion; Bragg reflection waveguide directional coupler; TE polarizer; common finite periodic region; coupling coefficient; dispersion properties; electrooptic switch; narrowband wavelength filter; periodic bounding media; periodic coupling section; Directional couplers; Integrated optics; Narrowband; Optical control; Optical devices; Optical filters; Optical reflection; Optical waveguides; Thickness control;
Journal_Title :
Photonics Technology Letters, IEEE
