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Bu çalışmada S bandında çalışan tek ve iki aşamalı Tulyum Katkılı Fiber Yükselteçler (TKFY) optimize edilerek kazanç ve gürültü spektrumuna etkileri iki farklı durum için karşılaştırılmıştır. İlk durumda Tulyum Katkılı Fiber (TKF) uzunlukları 2.5 m’den 30 m’ye kadar her seferinde 2.5 m arttırılarak değiştirilmiştir. İkinci durumda ise pompa gücü 200 mW’tan 3000 mW’a kadar her seferinde 200 mW arttırılarak değiştirilmiştir. Her iki durum için kazanç ve gürültü spektrumları incelenmiştir. Ayrıca, sırayla -20 dBm ve -30 dBm giriş güçleri ile beslenen 1451-1520 nm bant aralığındaki 24 sinyal, 1050 nm pompa lazeri ile ileri yönlü pompalanmıştır. En yüksek kazancı veren 1469 nm dalgaboyundaki sinyal referans alınarak her iki parametre değişimi karşılaştırılmıştır. Sonuçta -30 dBm giriş gücü ile beslenen sinyalin daha geç doyuma ulaştığı ve daha yüksek kazanç sağladığı görülmüştür. Her iki giriş gücü için de iki aşamalı TKFY kullanmanın; 17.5 m TKF uzunluğunun kazancı %20-25 oranında arttırdığı, 800 mW- 2000 mW aralığındaki pompa gücünde ise kazancı %18-24 oranında arttırdığını göstermiştir. Devreler Optiwave 16.0 yazılımı kullanılarak simüle edilmiştir.
In this study, the one- and two-stage Tulyum Added Fiber Enhancers (TKFY) operating in the S band were optimized and the effects on the profit and noise spectrum were compared for two different situations. In the first case, the lengths of Tulyum Added Fiber (TKF) were changed by increasing 2.5 m each time from 2.5 m to 30 m. In the second case, the pump power was changed by increasing 200 mW each time from 200 mW to 3000 mW. Profit and noise spectrum for both cases have been studied. Furthermore, 24 signals in the 1451-1520 nm band range, powered by -20 dBm and -30 dBm input powers, are forward pumped with 1050 nm pump laser. The signal reference in the 1469 nm wave that gives the highest profit is compared with the variation of both parameters. As a result, the signal powered by -30 dBm input power was shown to reach later saturation and provide higher profits. The use of two-stage TKFY for both input powers has shown that 17.5 m TKF length has increased profit by 20-25%, while the pump power between 800 mW and 2000 mW has increased profit by 18-24%. Circuits are simulated using Optiwave 16.0 software.
In this study, single and two stage Thulium-Doped Fiber Amplifiers (TDFA) operating in S band were optimized and their effects on the gain and noise spectra were compared for two different situations. In the first case, the lengths of Thulium-Doped Fiber (TDF) were changed from 2.5 m to 30 m by increasing 2.5 m each time. In the second case, the pump power was changed from 200 mW to 3000 mW by increasing 200 mW each time. The gain and noise spectra were examined for both cases. In addition, 24 signals in the 1451-1520 nm bandwith, respectively, fed with -20 dBm and -30 dBm input powers, were pumped forward direction with a 1050 nm pump laser. Both parameter changes were compared by taking the signal with the highest gain at 1469 nm wavelength. As a result, it was observed that the signal fed with -30 dBm input power reached a later saturation and provided higher gain. Using two stages of TDFA for signals with both input power; it has shown that length of 17.5 m TDF increases the gain by 20-25%, and the pump power in the range of 800 mW-2000 mW increases the gain by 18-24%. Circuits are simulated using Optiwave 16.0 software.
Field : Fen Bilimleri ve Matematik
Journal Type : Ulusal
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