Theoretical performance analysis of doped optical fibers based on pseudo parameters

Theoretical Comparative Studies of Cross-Section Evaluation in Erbium-Doped Optical Fibers

“…To simulate the results of CCM in a similar condition as above, the rate equations [21,25] are solved by Runge-Kutta method [26] with signal and pump powers assumed as 4 mW and 50 mW, respectively. The obtained results are used in Eqs.…”

“…For actual and pseudo values of dopant concentrations, the corresponding variations of σ a and σ e are depicted in Figure 3 at 1550 nm and 1530 nm. In addition, by inserting a value for α in rate equations [21,25], the variations of signal power in presence of α is obtained. Now, based on CCM procedure for determination of σ a and (a) (b) Figure 3.…”

“…Using the actual-and pseudo-values of σ s a , σ Here, for the plot of pseudo gain of CCM, first by using rate equations [21,25], the value of σ a at 980 nm is obtained when only pump is on. In other word we use 980 nm as signal wavelength.…”

“…In our previous report using VISCM [21], a mono-beam propagation was used for determination of cross-sections in a low loss EDOF, but in using CCM, a double-beam propagation is used for the same purpose. The models of σ a , σ e , and the dopant concentration (N t ) using VISCM were obtained as [21]:…”

“…Recently, we have reported experimental techniques for simultaneous measurement of the σ a , σ e and α in lossy DOFs [18][19][20] and low-loss (< 10 dB/km) EDOF [21]. In the present paper, with an aim of theoretical comparative studies of our proposed technique and the CCM, we will utilize the same method but with a different approach to evaluate simultaneously the σ a , σ e and dopant concentration in lowloss EDOFs, which is based on variant input power, hence the name variant input single cutback method (VISCM).…”