Designing analysis of the polarization beam splitter in two communication bands based on a gold-filled dual-core photonic crystal fiber

Abstract

We design a novel kind of polarization beam splitter based on a gold-filled dual-core photonic crystal fiber (DC-PCF). Owing to filling with two gold wires in this DC-PCF, its coupling characteristics can be changed greatly by the second-order surface plasmon polariton (SPP) and the resonant coupling between the surface plasmon modes and the fiber-core guided modes can enhance the directional power transfer in the two fiber-cores. Numerical results by using the finite element method show the extinction ratio at the wavethlengths of 1.327 µm and 1.55 µm can reach −58 dB and −60 dB and the bandwidths as the extinction ratio better than −12 dB are about 54 nm and 47 nm, respectively. Compared with the gold-unfilled DC-PCF, a 1.746-mm-long gold-filled DC-PCF is better applied to the polarization beam splitter in the two communication bands of λ = 1.327 µm and 1.55 µm.

Ultra-short polarization beam splitter based on dual-core photonic crystal fiber with surface plasmon resonance effect

“…Thus, the optimal DC-PCF PBS length is 62.5 μm. Table 1 shows the comparisons between other proposed PCF PBSs and this work [37][38][39][40][41][42]. It can be concluded from Table 1 that although the bandwidths of the PBSs proposed in Refs [38,39,42] are slightly wider than that of this work, the DC-PCF PBS proposed in this work has the shortest length.…”

Study on Cultural Soft Power Promoting the Construction of International Communication Power in Shandong Province

“…Through the construction of an international communication system of "channel -account -platform", media integration can become deeper and more extensive. In this way, the image of Shandong in the new era can be displayed in an all-round and multi-angle way [4] . In addition, in order to promote Shandong's scientific and technological innovation, strong Marine province, culture and other characteristics, Shandong Internet Communication Group founded a brand column of external publicity.…”

Ultra-Short Dual-Core Photonic Crystal Fiber Polarization Beam Splitter with Round Lattice and As2S3-Filled Center Air Hole

“…The separate length is 0.175 mm, and the extinction ratio is −80.7 dB at the communication wavelength of 1550 nm. In the same year, Fan et al [23] designed a kind of dual-core gold-filled PCF polarization beam splitter. The splitting length of the polarization beam splitter is 1.746 mm, and the extinction ratios are −58 dB and −60 dB at the wavelengths of 1.327 um and 1.55 um, respectively.…”