APODIZER DESIGN TO EFFICIENTLY COUPLE LIGHT INTO A FIBER BRAGG GRATING
Document Type
Article
Publication Date
1-1-2023
Abstract
We provide an optimal control framework for efficiently coupling light in a bare fiber into Bragg gratings with cubic nonlinearity. The light-grating interaction excites gap solitons, a type of localized nonlinear coherent state which propagates with a central frequency in the forbidden band gap, resulting in a dramatically slower group velocity. Due to the nature of the band gap, a substantial amount of light is back-reflected by the grating's strong reflective properties. We optimize, via a projected gradient descent method, the transmission efficiency of previously designed nonuniform grating structures in order to couple more slow light into the grating. We further explore the space of possible grating designs, using genetic algorithms, along with a previously unexplored design parameter: the grating chirp. Through these methods, we find structures that couple a greater fraction of light into the grating with the added bonus of creating slower pulses.
Identifier
85163317402 (Scopus)
Publication Title
SIAM Journal on Applied Mathematics
External Full Text Location
https://doi.org/10.1137/22m1507759
ISSN
00361399
First Page
1126
Last Page
1145
Issue
3
Volume
83
Recommended Citation
Adriazola, Jimmie and Goodman, Roy H., "APODIZER DESIGN TO EFFICIENTLY COUPLE LIGHT INTO A FIBER BRAGG GRATING" (2023). Faculty Publications. 2009.
https://digitalcommons.njit.edu/fac_pubs/2009