Ultrashort pulse propagation in uniform and nonuniform waveguide long-period gratings
JOSA A, Vol. 22, Issue 7, pp. 1319-1333 (2005)
http://dx.doi.org/10.1364/JOSAA.22.001319
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Abstract
We conduct a detailed theoretical analysis of ultrashort pulse propagation through waveguide long-period grating (LPG) structures operating in the linear regime. We first consider the case of uniform LPGs, and we also investigate the effect of the typical grating nonuniformities, e.g., grating profile apodization, grating period chirping, and discrete phase shifts, on the spectral and temporal behavior of LPG structures. The two interacting modes are analyzed separately, and advanced representation tools, namely, space-wavelength and space-time diagrams (where space refers to the longitudinal grating dimension), are used to provide a deeper insight into the physics that determines the pulse evolution dynamics through the grating structures under analysis. In addition to its intrinsic physical interest, our study reveals the strong potential of LPG-based devices for optical pulse reshaping operations in the subpicosecond regime.
© 2005 Optical Society of America
OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(130.3120) Integrated optics : Integrated optics devices
(250.5530) Optoelectronics : Pulse propagation and temporal solitons
(320.5540) Ultrafast optics : Pulse shaping
Citation
Mykola Kulishov and José Azaña, "Ultrashort pulse propagation in uniform and nonuniform waveguide long-period gratings," J. Opt. Soc. Am. A 22, 1319-1333 (2005)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-22-7-1319
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