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

作者：Wang, Wei Lun^*; Wang, Jau Sheng; Huang, Yi Chung; Liu, Li Wei; Huang, Sheng Lung; Cheng, Wood Hi

来源：IEEE Photonics Technology Letters, 2012, 24(18): 1628-1631.

DOI：10.1109/LPT.2012.2211346

• Few-mode crystalline core fiber (FMCDCCF)
• fiber fabrication
• fiber laser
• gross gain

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 mu m 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 Cr4 : YAG crystalline. A gross gain of the FMCDCCF is measured around 2.3 dB at a wavelength of 1.4 mu m.

• 出版日期2012-9-15
• 单位中山大学