Large Mode Field Active Optical Fiber and Manufacture Method Thereof

Strategic Insights -

The World Intellectual Property Organization has published Patent No. WO/2011/085619, titled "LARGE MODE FIELD ACTIVE OPTICAL FIBER AND MANUFACTURE METHOD THEREOF." The invention, filed by Fibrehome Telecommunication Technologies Co., Ltd. on November 24, 2010, describes a large mode field active optical fiber and its manufacture method. The fiber is designed to provide a high-capacity, high-quality output with increased reliability and material efficiency.

Key Takeaways:

  • The invention provides a large mode field active optical fiber with a graded refractive index and a section parameter (a) between 1 and 3.
  • The fiber core is formed by depositing, melting, and shrinking tetrachlorosilane doped with rare earth ions in a quartz glass tube.
  • The quartz glass inner cladding has a regular multi-prism shape and is coated on the outer surface of the fiber core.
  • The large mode field active optical fiber provides an approximate single-mode output and increases the capacity to bear laser power.
  • The fiber also increases the quality of the light beam, avoids the problem of hollow rings in the output laser, and increases the reliability of the high power fiber laser.
  • The invention also reduces the manufacture cost and increases the utilization efficiency of raw materials.
  • The patent was filed under Application No. PCT/CN2010/079051 on November 24, 2010.

Statistics:

  • The fiber core has a refractive index that is a graded refractive index, with a section parameter (a) between 1 and 3.
  • The quartz glass inner cladding has a regular multi-prism shape.
  • The large mode field active optical fiber provides an approximate single-mode output.

Sources:

  • World Intellectual Property Organization. (WO/2011/085619). LARGE MODE FIELD ACTIVE OPTICAL FIBER AND MANUFACTURE METHOD THEREOF. Published July 21.
  • Fibrehome Telecommunication Technologies Co., Ltd. (PCT/CN2010/079051). LARGE MODE FIELD ACTIVE OPTICAL FIBER AND MANUFACTURE METHOD THEREOF. Filed November 24, 2010.