Title :
Fabrication and characterization of photonic crystal-based symmetric Mach-Zehnder (PC-SMZ) structures based on GaAs membrane slab waveguides
Author :
Sugimoto, Yoshimasa ; Tanaka, Yu ; Ikeda, Naoki ; Nakamura, Hitoshi ; Kanamoto, Kyozo ; Ohkouchi, Shunsuke ; Watanabe, Yoshinori ; Inoue, Kuon ; Asakawa, Kiyoshi
Author_Institution :
Femtosecond Technol. Res. Assoc., Tsukuba, Japan
fDate :
7/1/2005 12:00:00 AM
Abstract :
We have experimentally demonstrated two- dimensional (2-D) photonic crystal (PC) waveguides (WGs) such as straight, bent, Y-branch, directional coupler (DC), and quantum dots (QDs)-based nonlinear optical (NLO) WGs using a GaAs air-bridge membrane with triangular-lattice line-defect WGs. These WGs are necessary for a 2-D PC-based symmetric Mach-Zehnder (PC-SMZ) type ultrafast all-optical switch. Experimental results on the clear observation of the optical interference at the Y-junction DC, nonlinearity-induced phase shift at the NLO waveguide, and transmission spectra in the total PC-SMZ WG configuration will be addressed, as well as measured results on each WG element.
Keywords :
III-V semiconductors; gallium arsenide; high-speed optical techniques; integrated optics; light interference; optical directional couplers; optical materials; optical phase shifters; optical switches; optical waveguides; photonic crystals; quantum dots; GaAs; GaAs membrane slab waveguides; Mach-Zehnder structures; NLO waveguide; air-bridge membrane; directional coupler; nonlinear optical; nonlinearity-induced phase shift; optical fabrication; optical integrated circuit; optical interference; quantum dots; transmission spectra; triangular-lattice line-defect; two-dimensional photonic crystal waveguides; ultrafast all-optical switch; Biomembranes; Directional couplers; Gallium arsenide; Nonlinear optics; Optical device fabrication; Optical waveguides; Photonic crystals; Quantum dots; Slabs; Ultrafast optics; Nonlinear optical (NLO) waveguide; optical integrated circuit; photonic crystals (PCs); quantum dot (QD); slab waveguide;
Journal_Title :
Selected Areas in Communications, IEEE Journal on
DOI :
10.1109/JSAC.2005.851219
