Simulation of dual stage thulium-doped fiber amplifier using pump power distribution technique

Abstract

<span>This paper shows dual stage thulium-doped fiber amplifiers (TDFAs) that use a pump power distribution technique. Simulations were done with signals ranging from 1975 nm to 2000 nm using the OptiSystem v.13 software. The results required were gathered from the software. The results of gain, noise figure, optical signal-to-noise ratio (OSNR) and output power were obtained. The highest gain and lowest noise figure results were achieved for the double pass dual stage TDFA configuration with values of 19.85 dB and 5.58 dB respectively, followed by the single pass dual stage TDFA. The OSNR and output power performances were also better for the double pass dual stage TDFA, obtaining 57.12 dB and 19.55 dBm respectively. This study shows that thulium can be used in the 2 µm region as an active gain medium and the dual stage architecture and distributed pumping technique proves to be effective techniques to obtain the desired results. Experimental work will be done in the future with the simulated results used as a reference.</span>

The gain and noise figure comparison of single‐pass, double‐pass, and dual‐stage triple‐pass thulium‐doped fiber amplifiers in S‐band with thulium‐doped fiber optimization

“…Another study method for the same purpose is the examination of various pumping methods 17–21 . To excite all thulium ions, dual‐stage designs and distributed pumping techniques are fulfilled 22 . Some studies show that the gain values can be increased with the help of a mirror or a circulator.…”

“…Some studies show that the gain values can be increased with the help of a mirror or a circulator. The output signal is passed over the amplifier again by reflecting it from the mirror or redirecting it with the circulator 22–25 …”

“…[17][18][19][20][21] To excite all thulium ions, dualstage designs and distributed pumping techniques are fulfilled. 22 Some studies show that the gain values can be increased with the help of a mirror or a circulator. The output signal is passed over the amplifier again by reflecting it from the mirror or redirecting it with the circulator.…”

“…The output signal is passed over the amplifier again by reflecting it from the mirror or redirecting it with the circulator. [22][23][24][25] When the literature is examined, it is seen that various studies have been carried out on multipass EDFA in C and L-bands. [26][27][28][29] On the other hand, there are studies on silica-based multi-pass TDFA in the L band and 1875-2000 nm band, 22,30 but there are no studies on silica-based TDFA in the S-band.…”

Simulation for determining the rod pump system parameter values using finite difference method

“…Alternative system designs using simulations are carried out to get optimal results [5][6][7][8]. Through the pump card data, it is necessary to adjust the parameter values on the rod pump to obtain the ideal pump (optimal) [9].…”