Sensitivity characterization of polarization operating by embedded reflective grating

Abstract

In this paper, a novel embedded reflective grating (ERG) is presented to realize bi-function polarization operating at infrared band by finite element analysis (FEM). For transverse electric (TE) polarization, a two-port output (0th and −2nd orders) with an efficiency of more than 47% and excellent uniformity can be obtained. For transverse magnetic (TM) polarization, a high efficiency output of 94.72% can be achieved at the −2th order. The results of the analysis of the electric field intensity distribution, angular and wavelength bandwidths further demonstrate the advantages of the proposed grating. In addition, the tolerance analysis of period and duty cycle prove the feasibility of the grating in practical production.

Structure and characterization of plus-shaped configuration for 1 × 4 splitter

“…Beam splitters play a significant role in the field of modern optical devices 1 – 4 The types of beam splitters can be divided into even-port beam splitter gratings, 5 , 6 odd-port beam splitter gratings, 7 – 10 and polarization-selective beam splitter gratings 11 , 12 . Gratings with different structures can have diverse functions under varying operating bands, 13 , 14 and researchers have been devoted to studying them 15 …”