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J. PENG1,* , L. LIU1, C. ZHANG1, Z. LIU1, S. ZHENG1, J. ZHENG1, H. WEI1, S. JIAN1
Step-index (SI) fiber designs are commonly used in achieving large mode area (LMA) and single mode operation in fiber lasers. A new kind of fabrication method of single mode LMA EDF is reported in this paper, the key process is deposition of multi-layer-core structure by using modified MCVD. Further more, the key optical and geometric specifications of the fiber are measured: the absorption peak is 7.4 dB/m @ 980 and 19 dB/m @ 1530 nm; the cutoff wavelength is about 1176 nm; the mode field diameter (MFD) is 12.4 μm and 12.6 μm at 1550 nm according to Petermann-2 and Gaussian definitions, respectively; the core and cladding diameter is about 12 μm and 124 μm, respectively. The MFD of conventional standard EDFs is in a limited range ~5-8 μm, thus the experimental result has made a big progress for MFD. Then the homemade LMA EDF is used to make a linear-cavity EDF laser (EDFL) based on TFBG and OC. A stable lasing output with a 3-dB bandwidth of less than 0.03 nm, a power perturbation of less than 0.22dB and a wavelength shifts of less than 0.012 nm over 2h are achieved at room temperature.
Large-mode-area, MCVD, Single mode, EDF, Laser.
J. PENG, L. LIU, C. ZHANG, Z. LIU, S. ZHENG, J. ZHENG, H. WEI, S. JIAN, Fabrication of a new kind of single mode large-modearea erbium-doped fiber and its applications, Optoelectronics and Advanced Materials - Rapid Communications, 4, 10, October 2010, pp.1509-1511 (2010).
Submitted at: Aug. 11, 2010
Accepted at: Oct. 14, 2010
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
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