Optimization of one-dimensional photonic crystals with double layer magneto-active defect

Topological charge conversion and localization in defected heterogeneous multihelicoidal optical fibers

“…Here, it is taken into account that due to the topological activity in the reflected field only the fields with TCs 0 and ±l are present. In the first part of the fiber, the incoming field must be decomposed in modes (11) and (12) of an infinite MF: In the second part of the fiber, the expressions for the modes are described by formulas (13) and ( 14) in which one must carry out the substitution | | ( )…”

“…For example, volume many-directional bandgap reflection of light by PCs is used in wide-angle optical splitters [4,5], which is critical while creating tightly packed optical microcircuits. Also it is possible to create on the basis of PCs the frequency splitters [6,7], optical logic gates [8], lasers [9,10], sensors, optical filters [11][12][13][14][15][16][17] and other devices [18][19][20]. Recently, a significant amount of interest has been evoked by chiral PC microstructured fibers [21][22][23][24][25].…”

Magneto-optics of the 2D iron-garnet nanocylinder array with localized and lattice modes

“…One of the straightforward ways to enhance the magneto-optical Faraday rotation in thin films is utilization of the photonic crystals with microcavity (defect) magnetic layers. 7, [17][18][19][20][21][22][23][24][25][26] Photonic crystals surrounding a magnetic layer act as a Bragg mirrors leading to the multiple re-reflection of light inside the magnetic layer like in the Fabry-Pérot cavity. Faraday polarization rotation constantly increases each loop the light travels inside the magnetic layer.…”