Few-Mode Cr-Doped Crystalline Core Fibers for Fiber Amplifier

A few-mode Cr-doped crystalline core fiber (FMCDCCF) is demonstrated. The fiber fabrication is a modified laser-heated pedestal growth (LHPG) technique that consists of over cladding a Cr:YAG crystal rod with silica and then fine tuning its core size with multiple core reduction through the LHPG sys...

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Bibliographic Details
Published in:IEEE photonics technology letters 2012-09, Vol.24 (18), p.1628-1631
Main Authors: Wang, Wei-Lun, Wang, Jau-Sheng, Huang, Yi-Chung, Liu, Li-Wei, Huang, Sheng-Lung, Cheng, Wood-Hi
Format: Article
Language:English
Subjects:
Amplifiers
Chromium
Conferences
Crystal structure
Crystals
Few-mode crystalline core fiber (FMCDCCF)
fiber fabrication
fiber laser
Fiber lasers
Fiber optics
Fibers
Gain
gross gain
Optical fiber amplifiers
Optical fiber communication
Optical fiber devices
Optical fibers
Tuning
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Description
Summary:A few-mode Cr-doped crystalline core fiber (FMCDCCF) is demonstrated. The fiber fabrication is a modified laser-heated pedestal growth (LHPG) technique that consists of over cladding a Cr:YAG crystal rod with silica and then fine tuning its core size with multiple core reduction through the LHPG system. The FMCDCCF exhibits a core diameter of 2 μm and a V -value around 3.77 to provide the few-mode characteristics. The optical properties of the FMCDCCF are similar to that of a pristine Cr 4+ :YAG crystalline. A gross gain of the FMCDCCF is measured around 2.3 dB at a wavelength of 1.4 μm.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2012.2211346