Photonic-crystal switch divider based on Ge2Sb2Te5 thin films.

A three-port phase-change photonic-crystal switch divider based on Ge2Sb2Te5 chalcogenide thin film was proposed. The chalcogenide material used was determined to have a high refractive index and fast phase-change speed by using laser radiation. The structure with a T-junction cavity was used to achieve three switch functions: switching "ON" in only one output port, switching "OFF" in both output ports, and dividing signals into two output ports. The transmission properties of the designed device at 2.0 μm were studied by the finite difference time domain method, which showed that the switch divider can achieve very high switching efficiency by optimizing T-junction cavity parameters. The scaling laws of photonic crystals revealed that the operating wavelength of the designed structure can be easily extended to another wavelength in the midinfrared region.

[1]  John,et al.  Strong localization of photons in certain disordered dielectric superlattices. , 1987, Physical review letters.

[2]  Masaki Asobe,et al.  Efficient and ultrafast all-optical switching using high Delta n, small core chalcogenide glass fibre , 1993 .

[3]  Steven G. Johnson,et al.  Molding the flow of light , 2001, Comput. Sci. Eng..

[4]  Matthias Wuttig,et al.  Laser induced crystallization of amorphous Ge2Sb2Te5 films , 2001 .

[5]  Abdolnasser Zakery,et al.  Optical properties and applications of chalcogenide glasses: a review , 2003 .

[6]  Ikmo Park,et al.  Highly efficient photonic crystal-based multichannel drop filters of three-port system with reflection feedback. , 2004, Optics express.

[7]  Louay A. Eldada,et al.  Optical communication components , 2004 .

[8]  Dong Wang,et al.  Application of group theory to plane wave expansion method for photonic crystals , 2004 .

[9]  Crystallization of amorphous Ge2Sb2Te5 films induced by a single femtosecond laser pulse , 2005 .

[10]  Mingyi Gao,et al.  Photonic crystal channel drop filter with a wavelength-selective reflection micro-cavity. , 2006, Optics express.

[11]  K. Asakawa,et al.  Ultra-fast photonic crystal/quantum dot all-optical switch for future photonic networks , 2004, 2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference.

[12]  Efficient Effective Permittivity Treatment for the 2D-FDTD Simulation of Photonic Crystals , 2007 .

[13]  Kathleen Richardson,et al.  Planar waveguide-coupled, high-index-contrast, high-Q resonators in chalcogenide glass for sensing. , 2008, Optics letters.

[14]  Ping Jiang,et al.  Picosecond and low-power all-optical switching based on an organic photonic-bandgap microcavity , 2008 .

[15]  Mahmoud Shahabadi,et al.  Sub-terahertz on–off switch based on a two-dimensional photonic crystal infiltrated by liquid crystals , 2008 .

[16]  Hiroyuki Tsuda,et al.  Proposal of a small self-holding 2×2 optical switch using phase-change material , 2008, IEICE Electron. Express.

[17]  Guonian Wang,et al.  Investigation of 2.0 μm emission in Tm3+ and Ho3+ co-doped oxyfluoride tellurite glass , 2009 .

[18]  Sailing He,et al.  Compact silicon-based wavelength-selective photonic integrated devices and the applications , 2009, OPTO.

[19]  Hitoshi Kawashima,et al.  Small-sized optical gate switch using Ge 2 Sb 2 Te 5 phase-change material integrated with silicon waveguide , 2010 .

[20]  Ai Qun Liu,et al.  Fabrication of phase-change chalcogenide Ge2Sb2Te5 patterns by laser-induced forward transfer. , 2011, Optics express.

[21]  B. Luther-Davies,et al.  Polarization-independent chalcogenide glass nanowires with anomalous dispersion for all-optical processing. , 2012, Optics express.

[22]  V. Dmitriev,et al.  Nonreciprocal optical divider based on two-dimensional photonic crystal and magneto-optical cavity. , 2012, Applied optics.

[23]  Barry Luther-Davies,et al.  Photonic crystal nanocavities fabricated from chalcogenide glass fully embedded in an index-matched cladding with a high Q-factor (>750,000). , 2012, Optics express.

[24]  Sailing He,et al.  Low-threshold Brillouin laser at 2 μm based on suspended-core chalcogenide fiber. , 2014, Optics letters.

[25]  T. F. Khalkhali,et al.  Design of high-Q polystyrene nonlinear cavity for ultrafast all-optical switching in mid-infrared photonic crystal slabs with cavity-waveguide structure , 2014 .

[26]  Hongtao Lin,et al.  Integrated flexible chalcogenide glass photonic devices , 2014, Nature Photonics.

[27]  Xiaomin Wang,et al.  Ultra-compact, self-holding asymmetric Mach-Zehnder interferometer switch using Ge2Sb2Te5 phase-change material , 2014, IEICE Electron. Express.

[28]  S. Dai,et al.  Waveguide in Tm3+-Doped Chalcogenide Glass Fabricated by Femtosecond Laser Direct Writing , 2015, IEEE Photonics Technology Letters.

[29]  Chuanqi Li,et al.  A high quality factor photonic crystal channel-drop filter with a linear gradient microcavity , 2015 .

[30]  Investigation on pseudo-binary ZnSb–Sb2Te3 material for phase change memory application , 2015 .

[31]  Effect of Sb2Se on phase change characteristics of Ge2Sb2Te5 , 2015 .

[32]  V. Dmitriev,et al.  Two-dimensional photonic-crystal-based double switch-divider. , 2016, Applied optics.