Temperature-dependent study on L-band EDFA characteristics pumped at 980nm and 1480nm in phosphorus and aluminum-rich erbium-doped silica fibers
Temperature-dependent study on L-band EDFA characteristics pumped at 980nm and 1480nm in phosphorus and aluminum-rich erbium-doped silica fibers
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 19.41.4dB gain and 4.60.2dB noise figure (NF) from 1575-1615nm at room temperature (RT), for a multi-channel input signal of -25dBm in each channel, whereas the aluminum-rich EDF provided 20.35.1dB gain and 5.30.8dB 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 -60oC, respectively. The temperature-dependent gain (TDG) coefficient from 1575-1615nm was in the range -0.006 to -0.044 dB/oC for phosphorus EDF and 0.011 to -0.023 dB/oC for aluminum-rich EDF, over the temperature range -60 to +80oC. 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 20.93.9dB gain and 3.70.6dB 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.
Absorption, Erbium, Erbium-doped fiber (EDF); L-band optical amplifier; Phosphosilicate fiber; Temperature-dependent gain (TDG), Erbium-doped fiber amplifiers, L-band, Optical fiber amplifiers, Phosphorus, Temperature measurement, temperature-dependent gain (TDG), Erbium-doped fiber (EDF), L-band optical amplifier, phosphosilicate fiber
4819-4824
Zhai, Ziwei
95caa116-8203-4b74-aa67-b5d00cf14e6d
Halder, Arindam
9a8529b1-dce4-4d6c-964c-2fa2e8cf4d67
Núñez-Velázquez, Martin
3c102956-ac51-4d02-9fe6-6628557cfbff
Sahu, Jayanta K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
13 April 2022
Zhai, Ziwei
95caa116-8203-4b74-aa67-b5d00cf14e6d
Halder, Arindam
9a8529b1-dce4-4d6c-964c-2fa2e8cf4d67
Núñez-Velázquez, Martin
3c102956-ac51-4d02-9fe6-6628557cfbff
Sahu, Jayanta K.
009f5fb3-6555-411a-9a0c-9a1b5a29ceb2
Zhai, Ziwei, Halder, Arindam, Núñez-Velázquez, Martin and Sahu, Jayanta K.
(2022)
Temperature-dependent study on L-band EDFA characteristics pumped at 980nm and 1480nm in phosphorus and aluminum-rich erbium-doped silica fibers.
Journal of Lightwave Technology, 40 (14), .
(doi:10.1109/JLT.2022.3167261).
Abstract
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 19.41.4dB gain and 4.60.2dB noise figure (NF) from 1575-1615nm at room temperature (RT), for a multi-channel input signal of -25dBm in each channel, whereas the aluminum-rich EDF provided 20.35.1dB gain and 5.30.8dB 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 -60oC, respectively. The temperature-dependent gain (TDG) coefficient from 1575-1615nm was in the range -0.006 to -0.044 dB/oC for phosphorus EDF and 0.011 to -0.023 dB/oC for aluminum-rich EDF, over the temperature range -60 to +80oC. 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 20.93.9dB gain and 3.70.6dB 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.
Text
Temperature-Dependent_Study_on_L-band_EDFA_Characteristics_Pumped_at_980nm_and_1480nm_in_Phosphorus_and_Aluminum-rich_Erbium-Doped_Silica_Fibers
- Accepted Manuscript
More information
Accepted/In Press date: 10 April 2022
Published date: 13 April 2022
Additional Information:
Publisher Copyright:
© 1983-2012 IEEE.
Keywords:
Absorption, Erbium, Erbium-doped fiber (EDF); L-band optical amplifier; Phosphosilicate fiber; Temperature-dependent gain (TDG), Erbium-doped fiber amplifiers, L-band, Optical fiber amplifiers, Phosphorus, Temperature measurement, temperature-dependent gain (TDG), Erbium-doped fiber (EDF), L-band optical amplifier, phosphosilicate fiber
Identifiers
Local EPrints ID: 457666
URI: http://eprints.soton.ac.uk/id/eprint/457666
ISSN: 0733-8724
PURE UUID: a5ecb6e0-96f4-4523-a89b-273d1210cd56
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Date deposited: 14 Jun 2022 16:58
Last modified: 17 Mar 2024 04:03
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Author:
Martin Núñez-Velázquez
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