Title :
High performance directional coupler filter using novel phase-shift pair grating
Author :
Park, Chan-Yong ; Kim, Dug-Bong ; Lee, Seung-Won ; Oh, Kwang-Ryong ; Kim, Hong-Man ; Pyun, Kwang-Eui
Author_Institution :
Optoelectron. Sect., ETRI, Taejon, South Korea
Abstract :
A novel phase-shift pair grating (PSPG) structure was proposed and demonstrated to suppress sidelobe in a grating-assisted codirectional coupler filter. A PSPG is composed of two unit gratings. The position of one unit grating inside PSPG is fixed and that of the other is shifted in order to control the coupling strength. We demonstrate sidelobe level of -19 dB with a linearly shifted PSPG, which is the lowest to our knowledge
Keywords :
diffraction gratings; optical communication equipment; optical directional couplers; optical waveguide filters; wavelength division multiplexing; WDM components; coupling strength; grating-assisted codirectional coupler filter sidelobe suppression; high performance directional coupler filter; linearly shifted PSPG; phase-shift pair grating; Directional couplers; Electronic mail; Gratings; Interference; Optical crosstalk; Optical filters; Optical polarization; Optical tuning; Optical waveguides; Wavelength division multiplexing;
Conference_Titel :
Optical Communication, 1998. 24th European Conference on
Conference_Location :
Madrid
Print_ISBN :
84-89900-14-0
DOI :
10.1109/ECOC.1998.732618
