Broadband High-Efficiency Gratings Operating at the 2nd Order Designed by Simplified Modal Method

It is well known that higher diffraction order suggests a stronger dispersion for gratings with the same period. Here, a broadband high-efficiency three-layer all-dielectric rectangular-groove transmission grating operating at the −2 nd order is designed under second Bragg incidence. An initial solu...

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Veröffentlicht in:	IEEE photonics technology letters 2020-03, Vol.32 (6), p.309-312
Hauptverfasser:	Yin, Zhengkun, Yu, Junjie, Lu, Yunkai, Zhou, Changhe
Format:	Artikel
Sprache:	eng
Schlagworte:	Algorithms Bandwidth Bandwidths Bragg gratings Broadband Broadband communication Computer simulation Diffraction Diffraction gratings Efficiency Gratings Grooves High-order-operating gratings Indexes Multilayers second Bragg incidence simplified modal method Simulated annealing three-layer resonant gratings
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