HomeProductsFiberFiberSingle Mode Fiber Single Mode Fiber: 0.28 and 0.35 NA
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Single Mode Fiber: 0.28 and 0.35 NA

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Ultra-High NA Single Mode Fiber




  • 0.28 NA & 0.35 NA
  • High Coupling Efficiency to Planar Waveguides
  • Low Coupling Loss to Fluoride Fibers
  • Low Coupling Loss to Transmission Fibers

For Fluoride and Tellurite Fiber Splicing with up to 0.35NA

Fluoride optical fibers for amplifiers and lasers at 1.3 and 1.5 μm are becoming important components for optical fiber communications systems. Efficient operation of fluoride fibers requires a very high numerical aperture (typically >0.3), which unfortunately leads to increased coupling losses (insertion loss) and low return loss when connected to standard silica fibers. This coupling loss decreases the overall gain and seriously degrades the noise figure. By coupling UHNA series fibers, which offers up to 0.35NA between the fluoride and standard silica fibers, these losses can be dramatically reduced.

Applications

  • Fluoride and Other Non-Silica Fiber Splicing
  • Planar Waveguide Coupling
  • Fiber Tails for High NA Sources
Item #UHNA1UHNA3UHNA4
Wavelength Range 1100 - 1600 nm 960 - 1600 nm 1100 - 1600 nm
Mode Field Diamter 4.0 µm @ 1310 nm 3.3 µm @ 1310 nm 3.3 µm @ 1310 nm
Cladding 125 ± 1.5 µm 125 ± 1.5 µm 125 ± 1.5 µm
Coating 250 ± 20 µm 250 ± 20 µm 250 ± 20 µm
2nd Mode Cutoff Wavelength 1000 ± 50 nm 900 ± 50 nm 1050 ± 50 nm
Core Composition SiO2/GeO2 SiO2/GeO2 SiO2/GeO2
Typical Attenuation @ 1550 nm  
NA 0.28 0.35 0.35
Stripper Tool T06S13 T06S13 T06S13

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