Design of waveguide grating with ultrafast tunable index contrast

Title
Design of waveguide grating with ultrafast tunable index contrast
Authors
임선도황인각이관일김병윤이상배
Keywords
fiber; photonic; grating; laser
Issue Date
2011-07
Publisher
Optics express
Citation
VOL 19, NO 14, 13047-13055
Abstract
A long-period waveguide grating (LPWG) with a tunable index contrast is proposed. The design features a simple configuration that consists of a two-mode waveguide formed on periodically poled lithium niobate with an angle with respect to its domain wall and a traveling-wave electrode. In the design, the electrical traveling wave introduces a periodic change in the refractive index of waveguide, which functions as a long-period waveguide grating that couples between symmetric and anti-symmetric core modes. The index contrast of grating can be controlled by the traveling-wave intensity. For application to ultrafast device, structural parameters satisfying velocity and impedance matching conditions are numerically calculated.
URI
http://pubs.kist.re.kr/handle/201004/40600
ISSN
1094-4087
Appears in Collections:
KIST Publication > Article
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