Experimental demonstration of very high negative chromatic dispersion dual-core photonic crystal fiber

Abstract

This paper reports the experimental drawing fabrication of very large negative chromatic dispersion dual-core photonic crystal fiber. The fabricated fiber has a peak chromatic dispersion value of -820 ps/(nm km).

Calculation of dispersion characteristics of microstructured optical fibers by the finite element method

“…Although we can see that our results has some deviations with the measured chromatic dispersion these are in better agreement with that calculated in [16].…”

“…5(b) with solid line, whereas one calculated in [16] with dashed line and experimentally measured with dash-dot line. The fiber has narrow bandwidth of negative dispersion because the negative dispersion occurs only at wavelength around the phase matching wavelength.…”

“…Figure 4(d) shows the cross section of the DCPCF with a low GeO 2 -doped inner core with Δ=1.8 and a solid outer core formed from a missed air holes in 3rd ring [16]. The structure parameters of the dual-core DCPCF are: the pitch between air holes Λ=6.95 mkm, the diameter of air holes d=3.13 mkm and the diameter of the doped inner core is 5.24 mkm.…”

Progress of photonic crystal fibers and their applications

“…Yang et al in Tsinghua University designed a kind of dualcore structured PCF (DC-PCF), shown in Fig. 4, and it was successfully fabricated by Fiberhome Telecommunication Technologies Co., Ltd. Figure 5 shows that the peak dispersion value of this PCF is -666.2 ps/(nm$km) [38,39]. The position of the dispersion peak is at the wavelength of 1586 nm, which has a shift from the designed peak position.…”