Electromagnetic dipole resonant characteristics of all-dielectric one dimensional grating in terahertz region

Fang, Bo; Chen, Lin; Jing, Xufeng

doi:10.1016/j.ijleo.2018.06.038

Cited by 4 publications

(1 citation statement)

References 15 publications

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“…The optical communication laser light of 1550 nm is incident from the surface of the grating under second Bragg incidence. Figure 2 shows the normalized electric field distribution of bullet-alike reflective gratings [21][22][23][24]. From the figure 2, we can see that the incident light of 1550 nm is incident at the second Bragg angle through the grating region and then reflected by the metal Ag layer, and most of the electric field energy is reflected, thus achieving a good polarization-selective effect.…”

Section: Bullet-alike Arrays For Te-one/tm-two Splittingmentioning

confidence: 99%

Bullet-alike arrays for TE-one/TM-two splitting under second Bragg incidence at communication laser wavelength

Fu¹,

Wang²

2020

Laser Phys.

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A polarization-selective bullet-alike reflective grating is described in this paper. Based on the finite element method, the parameters are continuously optimized to obtain the nice structure. During the simulation, within the incident wavelength of 1528–1563 nm or the incident angle range of 49.9–51.4°, the -2nd order of TE-polarized light achieves more than 95% efficient reflection, and the 0th and -2nd order of TM-polarized light achieves more than 40% efficient reflection for two ports. The results show the good process tolerance and incident characteristics of the grating. In addition, the normalized electric field distribution of bullet-alike reflective gratings is analyzed, which explains the complex physical mechanism well. The polarization-selective bullet-alike reflective grating can be well applied in the laser field.

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Section: Bullet-alike Arrays For Te-one/tm-two Splittingmentioning

confidence: 99%