Title :
A multimode planar power splitter
Author :
Besley, James A. ; Love, John D. ; Langer, Wendy
Author_Institution :
Opt. Sci. Centre, Australian Nat. Univ., Canberra, ACT, Australia
fDate :
4/1/1998 12:00:00 AM
Abstract :
A novel scheme for multimode 1×2 and 1×4 splitters is proposed. These devices differ from conventional 1×2 and 1×4 multimode interference splitters, as they do not rely on the interference between the excited modes propagating in the multimode region. Instead, their functionality is based on the principle that in an asymmetric multipronged splitter, the power in each excited mode ran be directed unambiguously into one of the single-mode output channels with minimal crosstalk between channels. The geometry and relative position of the single-mode input waveguide of the 1×2 and 1×4 splitters is optimized to split the input power as evenly as possible between the two and four output channels, respectively, and to minimize the excess loss of the device. A simple low-power single-mode tap, based on the same principle, is also investigated and its excess loss and wavelength dependence determined
Keywords :
demultiplexing; optical communication equipment; optical crosstalk; optical elements; optical losses; optical planar waveguides; symmetry; 1×4 splitters; asymmetric multipronged splitter; excess loss; excited modes; geometry; low-power single-mode tap; minimal crosstalk; multimode 1×2 beam splitters; multimode planar power splitter; multimode region; relative position; single-mode input waveguide; single-mode output channels; wavelength dependence; Couplers; Demultiplexing; Geometry; Integrated optics; Interference; Optical crosstalk; Optical losses; Optical waveguides; Photonic integrated circuits; Propagation constant;
Journal_Title :
Lightwave Technology, Journal of
