Er and Yb co-doped dual-clad fiber. Ytterbium is widely used for high power fiber laser applications because it is highly soluble in typical optical fiber core matrices with the result that single mode absorption figures as high as a thousand dB per meter or greater may be achieved without adversely affecting efficiency. In a cladding pump fiber, where the effective pump absorption is reduced to a small fraction of the single mode figure, this dramatic increase in pump absorption enables typical amplifier gain lengths of 10 meters or shorter to be realized – simplifying packaging and reducing cost when compared with equivalent erbium-only cladding-pump fibers.
The unique shape of the ytterbium absorption spectrum also offers significant advantages over erbium. Erbium typically needs wavelength-stabilized, TE-cooled pump diodes, to lock the pump diode onto one or other of its narrow absorption peaks, whereas ytterbium provides a much flatter, �Absorption Plateau’, particularly at practical, multimode pump wavelengths around 940 nm. This �Plateau’ can enable the use of un-cooled pump lasers – reducing costs and power consumption and enhancing overall system reliability. (Mfg. P/N CP1500Y)
Core: Fused silica doped with Ytterbium, Erbium and Phosphorus
First Cladding: Pure fused silica
Second Cladding: Fluorine-doped fused silica
Optimized for efficient energy transfer using standard ferrules
Can be cleaved and spliced with standard equipment
光纤类型
Erbium-Ytterbium Co-doped
模场直径,标称
5.6 - 6.4 @1550 nm µm
包层直径
125 ±1 µm
镀膜直径
245 ±15 µm
电缆直径
2.5 mm
工作波长
1520 - 1570 nm
截止波长
1300 - 1450 nm
缓冲涂层材料
Dual Acrylate
最大衰减
≤200 @1240 nm dB/km
数值孔径
0.20 - 0.22
验证试验
100 kpsi
泵浦吸收峰值
19 (nominal) @1550 nm dB/m
掺铒和掺镱双包层光纤。镱广泛用于高功率光纤激光器的应用,因为它在典型的光纤核心矩阵中具有高度的可溶性,其结果是可以在不影响效率的情况下达到每米1000分贝或更高的单模吸收系数。在光纤包层泵,有效减少泵吸收单模图的一小部分,这显著增加泵吸收使典型放大器增益长度10米或更短的实现——简化包装和减少成本相比,相当于erbium-only cladding-pump纤维。
镱吸收光谱的独特形状也比铒具有明显优势。通常需要wavelength-stabilized铒TE-cooled泵二极管,二极管泵锁到一个或其他的狭窄的吸收峰,而提供了一个更加扁平化和镱�吸收高原”,尤其是在实用,多模泵浦波长940纳米左右。这�高原”可以使泵处于过热状态的使用激光——降低成本和能耗,提高整个系统的可靠性。(制造。P / N CP1500Y)
核:掺镱、铒和磷的熔融二氧化硅
第一层:纯石英
第二层:掺氟硅胶
使用标准套圈优化高效的能源传输
可以用标准设备进行切割和拼接吗