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Registered OPTICAL COUPLER HAVING SELF-FOCUSING REGION AND ARRYED-WAVEGUIDE GRATING STRUCTURE INCLUDING THE SAME

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Inventors
Park Jaegyu, Kim Gyungock, Jiho Joo, Park Hyundai, Kwack Myungjoon
Application No.
14329878 (2014.07.11)
Publication No.
20150078708 (2015.03.19)
Registration No.
9164238 (2015.10.20)
Country
UNITED STATES
Project Code
13VB1800, Silicon Nanophotonics-based next-generation computer chip, Kim Gyungock
Abstract
Provided are an optical coupler and an arrayed-waveguide grating structure including the same. The coupler includes a lower clad layer, a core comprising a slab waveguide region disposed on one side of the lower clad layer and a ridge waveguide region disposed on the other side of the lower clad layer, and an upper clad disposed on the core, wherein the ridge waveguide region comprises a self-focusing region configured to focus an optical signal provided form the slab waveguide region and thus to prevent scattering of the optical signal.
KSP Keywords
Clad layer, Grating structure, Optical signal, Ridge waveguides(RWs), Self-focusing, Slab waveguide, Waveguide grating, arrayed waveguide grating(AWG), optical coupler