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Wideband full double-pass serial hybrid fiber amplifier utilizing L-shape configuration
× Tables (3) . Table 1. . Adopted Design Parameters for the Proposed FDP-SHFA Parameter Description Value . CW laser . p i n = ? 25 d B m and ? 10 d B m ; λ = 1530 to 1600?nm; l i n e w i d t h = 10 M H z . . Erbium-doped fiber . l e n g t h = 3 m i o n d e n s i t y = 440 p p m d o p i n g r a d i u s = 1.65 ? m c o r e r a d i u s = 1.65 ? m c u t o f f = 1300 n m . . bidirectional fiber used as RFA . upper pump r e f e r e n c e = 1480 n m ; d i s p e r s i o n = ? 110 p s / n m / k m ; dispersion s l o p e = ? 0.075 p s / n m 2 / k reference w a v e l e n g t h = 1550 n m ; effective interaction area, 20 ? m 2 ; Raman gain p e a k = 5.09 e ? 14 ; gain x frequency = from file; l e n g t h = 7 k m . . pump laser . p u m p p o w e r = 150 to 400?mW λ = 1480 n m . . optical loop mirror (M1 and M2) . connected to port 2 and short ports?1?and?3 . Table 2. . Main Parameters Taken into Account through the Pump Power Optimization Pump Power (mW) G a v . (dB) N F a v . (dB) Gain Bandwidth 150 . 19.093 . 7.877 . 55 . 200 . 20.762 . 7.878 . 55 . 250 . 22.183 . 7.585 . 60 . 300 . 23.624 . 7.736 . 60 . 350 . 25.762 . 7.871 . 55 . 400 . 27.659 . 7.430 . 50 . Table 3. . Comparison of the Performance of the Proposed System with Previous Work [ 9 – 11 ] Amplifier Design Pump Power mW Gain Bandwidth (nm) RFA Length (km) EDFA Length (m) N F a v . (dB) No.?of Pumping Sources Reference G a v . dB Small Signal Large-Signal [ 9 ] . DP-SHFA . 1410 . 17.2 . 15 . 55 . 1.3 . 3 . 6.8 . 1 at 1411?nm . [ 10 ] . DP-PHFA . 650 . 22 . 60 . 60 . 7 . 3 . 8 . 1 at 1480?nm . [ 11 ] . DP-CSPHFA a . 800 . 22.5 . 80 . 90 . 7 . 3 . 10.6 . 3 at 1410?nm/ 1480?nm/1495?nm . Our work . FDP-SHFA . 300 . 23.6 . 60 . 65 . 7 . 3 . 7 . 1 at 1480?nm . a ?DP–CSPHFA: Double pass–combined serial parallel hybrid amplifier. Close .
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