摘要:
An optical fiber including: (i) a silica based, rare earth doped core having a first index of refraction n1; (ii) a silica based inner cladding surrounding the core and having a second index of refraction n2, such that n1>n2, said inner cladding having a plurality of air holes extending longitudinally through the length of said optical fiber; (iii) a silica based outer cladding surrounding said inner cladding and having a third index of refraction n3, such that n2>n3, wherein said optical fiber supports a single polarization mode within the operating wavelength range.
摘要翻译:一种光纤,包括:(i)具有第一折射率n 1的二氧化硅基稀土掺杂的芯; (ii)围绕所述芯并且具有第二折射率n 2 2的基于二氧化硅的内包层,使得n 1,N 2, 所述内包层具有沿所述光纤的长度纵向延伸的多个气孔; (iii)围绕所述内包层并具有第三折射率n 3 3的基于二氧化硅的外包层,使得n 2 N 3 N 3 其中所述光纤在工作波长范围内支持单一偏振模式。
摘要:
An optical transmission system is provided comprising a thulium doped optical fiber, a light emitting pump device optically coupled to the thulium doped fiber, and a Raman amplifier fiber optically coupled to the thulium doped optical fiber. The light emitting pump device in combination with the thulium doped fiber generates a first amplification pump wavelength and the Raman amplifier receives the first amplification pump wavelength. The first pump wavelength amplifies an optical signal in the Raman amplifier, the Raman amplifier operating at a signal wavelength in the range of about 1530 nm to about 1625 nm.