Title :
Compact mode-size converters for efficient coupling between fibers and integrated optical waveguides
Author :
Manolatou, C. ; Haus, H.A.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., MIT, Cambridge, MA, USA
fDate :
July 30 2001-Aug. 1 2001
Abstract :
We present a theoretical and numerical investigation of compact fiber-waveguide couplers that are based on lensing and high index-contrast and are only a few microns long. These structures are characterized by very broadband operation which makes them suitable for WDM systems. We assume that the input mode is from a lensed single-mode fiber and can be approximated by a Gaussian. Thus a preliminary design can be obtained analytically using Gaussian beam optics and ray matrices. Finite difference time domain (FDTD) simulations are performed for evaluation of the performance and optimization of the design.
Keywords :
finite difference time-domain analysis; integrated optics; laser beams; optical communication equipment; optical couplers; optical waveguide theory; wavelength division multiplexing; FDTD simulations; Gaussian beam optics; Si-SiO/sub 2/; WDM systems; broadband operation; compact fiber-waveguide couplers; compact mode-size converters; finite difference time domain simulations; high index-contrast; input mode; integrated optical waveguide/fibre coupling; lensed single-mode fiber; lensing; numerical investigation; optimization; ray matrices; Finite difference methods; Integrated optics; Lenses; Optical coupling; Optical devices; Optical fiber couplers; Optical fibers; Optical waveguide components; Optical waveguides; Time domain analysis;
Conference_Titel :
Advanced Semiconductor Lasers and Applications/Ultraviolet and Blue Lasers and Their Applications/Ultralong Haul DWDM Transmission and Networking/WDM Components, 2001. Digest of the LEOS Summer Topica
Conference_Location :
Copper Mountain, CO, USA
Print_ISBN :
0-7803-7100-3
DOI :
10.1109/LEOSST.2001.941959
