Gain Enhancement of Single-Mode Cr-Doped Core Fibers by Online Growth System

Gain enhancement of single-mode Cr-doped crystalline core fiber (SMCDCCF) with longer fiber length fabricated by online laser-heated pedestal growth (LHPG) technique is demonstrated. In comparison with the SMCDCCF fabricated without online growth, the online technique enables real-time monitoring an...

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Bibliographic Details
Published in:IEEE photonics technology letters 2016-10, Vol.28 (19), p.2098-2101
Main Authors: Liu, Chun-Nien, Cheng, Gia-Ling, Chen, Nan-Kuang, Huang, Pi-Ling, Huang, Sheng-Lung, Cheng, Wood-Hi
Format: Article
Language:English
Subjects:
Amplification
Crystal structure
Crystals
fiber amplifier
Fiber fabrication
Fibers
Gain
gross gain
Monitoring
On-line systems
Optical fiber amplifiers
Optical fiber networks
single-mode crystalline core fiber
Variability
Wavelength measurement
Wavelengths
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Summary:Gain enhancement of single-mode Cr-doped crystalline core fiber (SMCDCCF) with longer fiber length fabricated by online laser-heated pedestal growth (LHPG) technique is demonstrated. In comparison with the SMCDCCF fabricated without online growth, the online technique enables real-time monitoring and controlling small molten zone in the LHPG to achieve longer length with better uniformity and smaller core diameter of the SMCDCCFs. The SMCDCCF exhibits a length of 10.6 cm, a core diameter of 25 μm, and a V-value of 2.40, which confirms the LP 01 single-mode operation by the far-field pattern measurement. A 3.9-dB gross gain and a 1.9-dB net gain of the SMCDCCF at the wavelength of 1400 nm were obtained. The gross and net gains are the highest yet reported of the SMCDCCFs. Further development on higher gain of the SMCDCCF may be functioned the SMCDCCF as a broadband fiber amplifier for use in the next-generation fiber transmission systems.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2016.2585507