The F-SMM900 Passive Dual-Clad Fiber is a passive, dual-cladding, Multi-Mode (MM) fiber that combines both Single-Mode (SM) and multi-mode fiber characteristics within a single fiber. The fiber has a germano-silicate single-mode core, a pure silica inner cladding to guide the pump light and a fluorine-doped secondary cladding to give outstanding power handling over a full range of environmental conditions. The fiber does not rely on a low index polymer coating, so it can be stripped, cleaved and spliced like a standard telecoms fiber, without the need to apply a low index recoat material.

F-SMM900 has been designed specifically to be used in conjunction with Fibercore’s Dual-Clad Erbium/Ytterbium Doped Fiber (F-CP1500Y), Multi-Mode Pump Fiber (F-MM105) and Isolating Wavelength Division Multiplexer (F-CP-IWDM). In order to minimize losses throughout the system and maximize efficiency, the optical characteristics of these fibers have been matched for high splice compatibility.
 

• 光纤类型

  Fiber laser pump delivery

• 模场直径，标称

  6.5 - 8.2 @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

  980/1550 nm

• 截止波长

  870 - 970 nm

• 缓冲涂层材料

  Dual Acrylate

• 最大衰减

  4 (Nominal) @1550 nm dB/km

• 带宽

  20 MHz/km

• 弯曲半径（60 min./20 yrs.）

  10/16 mm

• 数值孔径

  0.18 - 0.20

• 验证试验

  100 kpsi  

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F-SMM900被动式双包层光纤是一种被动式双包层多模光纤，它将单模和多模光纤特性结合在一起。该光纤有一个德国硅酸盐单模芯，一个纯硅内包层引导泵的光和掺杂氟的二次包层，使卓越的功率处理在所有的环境条件。这种纤维不依赖于低折射率的聚合物涂层，因此它可以像标准的电信纤维一样剥离、切割和拼接，而不需要使用低折射率的重涂材料。

F-SMM900特别设计用于纤芯的双包层掺铒镱光纤(F-CP1500Y)、多模泵浦光纤(F-MM105)和隔离波长划分复用器(F-CP-IWDM)。为了使整个系统的损耗最小化，并使效率最大化，这些光纤的光学特性被匹配为具有高的拼接兼容性。