Temperature-Dependent Gain Variation Reduction in$C$-Band Erbium-Doped Fiber Amplifier Using Phosphorus-Erbium-Doped Silica Fiber

Im, Young-Eun; Han, Siqingaowa; Park, Chang‐Soo; Oh, Kyunghwan

doi:10.1109/lpt.2006.883200

Cited by 2 publications

(1 citation statement)

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“…Temperature-dependent gain and noise figure (NF) performances for EDFAs are due to the thermal effect on the re-distribution of ions in the sublevels of the ground and metastable states according to Boltzmann's law, resulting in the temperature-dependent absorption and emission cross-sections [5]. It was reported that EDFAs are more temperature-sensitive when pumped at 1480nm than 980nm [6,7] and more temperature-sensitive in the L-band than in the C-band [8,9]. However, there are few reports on the temperature dependence of EDFAs covering the longer wavelength side of the L-band (up to 1625nm) and few comparative discussions on different pump wavelengths for the L-band EDFAs.…”

Section: Introductionmentioning

confidence: 99%

Temperature-Dependent Study on L-Band EDFA Characteristics Pumped at 980 nm and 1480 nm in Phosphorus and Aluminum-Rich Erbium-Doped Silica Fibers

Zhai

Halder

Núñez-Velázquez

et al. 2022

J. Lightwave Technol.

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In this paper, we present a comparative study on temperature-dependent spectroscopic characteristics and L-band amplifier performance for aluminum-rich erbium-doped fiber (EDF) and in-house fabricated phosphorus co-doped EDF. Different pumping configurations were studied to conclude that the pump wavelength of 980nm with unequal forward/backward pump powers exhibited better temperature stability. Phosphorus EDF provided 19.4±1.4dB gain and 4.6±0.2dB noise figure (NF) from 1575-1615nm at room temperature (RT), for a multi-channel input signal of -25dBm in each channel, whereas the aluminumrich EDF provided 20.3±5.1dB gain and 5.3±0.8dB NF. Using a single-channel input signal of -25dBm at 1625nm, phosphorus EDF maintained >10dB gain with a 9.6dB and 12dB gain increment than aluminum-rich EDF at RT and -60 o C, respectively. The temperature-dependent gain (TDG) coefficient from 1575-1615nm was in the range -0.006 to -0.044 dB/ o C for phosphorus EDF and 0.011 to -0.023 dB/ o C for aluminum-rich EDF, over the temperature range -60 to +80 o C. We propose a hybrid L-band amplifier concatenating aluminum-rich EDF with phosphorus EDF, to suppress the temperature dependence of phosphorus EDF and improve the gain bandwidth restriction of aluminum-rich EDF. The hybrid EDF exhibited multi-channel 20.9±3.9dB gain and 3.7±0.6dB NF from 1575-1615nm at RT. The TDG coefficient of the hybrid EDF remained almost constant from 1585-1615nm, contributing to a temperature-insensitive gain flatness.

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Section: Introductionmentioning

confidence: 99%