Design of a compact polarization splitter based on the dual-elliptical-core photonic crystal fiber

Design of short polarization splitter based on dual-core photonic crystal fiber with ultra-high extinction ratio

“…And the performance of the proposed polarization splitter is better than those reported in [14] and [15], moreover, it has a simpler structure compared with other designs.…”

“…In 2013, Lu et al proposed a ultra-broadband polarization splitter based on a three-core PCF, the splitter had a bandwidth as wide as 300 nm with an ER better than À 20 dB, and the ER can reach À 30 dB at the wavelength of 1.55 mm with a length of 84.7 mm [13]. In 2014, Sheng et al proposed a compact polarization splitter based on dual-elliptical-core PCF, the splitter had the length of 775 mm and up to 50 dB ER at the wavelength of 1.55 mm,and the bandwidth could be 32 nm with the ER over 20 dB [14]. Fan et al proposed a polarization splitter based on dual-core tellurite glass PCF in two communications bands, in which a À 81.0 dB of ER was achieved at the wavelength of 1.55 mm with a length of 14.662 mm, but the bandwidth was narrowed to 13.0 nm as the ER better than À10 dB [15].…”

Design of Polarization Splitter via Liquid and Ti Infiltrated Photonic Crystal Fiber

“…Its characteristics allow for significant applications in optical sensing, storage systems, communication systems, and integrated circuit systems [23,27]. In recent years, various PS structures based on PCFs have been reported in the literature [28][29][30][31][32][33][34][35]. These PS structures show good performance (see Table 1), such as an ultra-short length [31][32][33], a high extinction ratio [32], a low coupling loss [30,34], and an ultra-broad bandwidth [20,24,34], but these PS structures do not present these excellent properties at the same time.…”

“…Length/mm Bandwidth/dB Coupling loss/dB [28] 1.7 40(<−11 dB) not mentioned [29] 4.72 190(<−20 dB) not mentioned [30] 8.7983 20(<−20 dB) 0.02 [31] 0.249 17(<−20 dB) not mentioned [32] 0.401 140(<−20 dB) not mentioned [33] 0.1191 249(<−20 dB) not mentioned [15] 14.662 13(<−10 dB) not mentioned [34] 4.036 430(<−20 dB) 0.011 [35] 0.775 32(<−20 dB) not mentioned Our work 0.0839 32.1(<−10 dB) 0.0068…”