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Pure Silica Core Visible Wavelength Fiber

Pure Silica Core Visible Wavelength Fiber

Nufern’s pure silica core fibers are optimized for use at visible wavelengths from 400 up to 700 nm. These high-performance fibers were developed for applications such as RGB components requiring  couplers, diode pigtails and unique delivery needs.  The pure silica core fibers were designed for more demanding applications that require lower attenuation and higher resistance to radiation and color center formation compared to germanium-doped fibers. An extended range (XP) version of S405 replaces the HP version offering a broader operational wavelength range.

Optical Specifications
Operating Wavelength 630 – 860 nm
Core NA 0.120
Mode Field Diameter (Gaussian) 4.2 ± 0.5 µm @ 630 nm
Cutoff 590 ± 30 nm
Core Attenuation ≤ 10.0 dB/km @ 630 nm
Geometrical & Mechanical Specifications
Cladding Diameter 125.0 ± 1.0 µm
Core Diameter 3.5 µm
Coating Diameter 245.0 ± 15.0 µm
Coating Concentricity < 5.0 µm
Core/Clad Offset ≤ 0.50 μm
Coating Material UV Cured, Dual Acrylate
Operating Temperature Range -55 to 85 °C
Short Term Bend Radius ≥ 6 mm
Long Term Bend Radius ≥ 13 mm
Prooftest Level ≥ 200 kpsi (1.4 GN/m²)

Coating Requirements: UV Cured, Dual Acrylate.
Special Core Dopants: Pure Silica.

$5.80 per meter meter(s)
Spooling Options:
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Call us at: 860.408.5000
Toll-free: 866.466.0214
Similar Fibers
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Typical Applications
Features & Benefits
  • Diode Pigtails
  • Compact UV sources
  • RGB components
  • Tight specifications — Highly deterministic results, highest product yield
  • High proof test — Low risk of mechanical damage and failure
  • High fatigue failure resistance — Longest service life
  • Pure silica core — Resistance to radiation-induced damage and color center formation


Nufern’s optical fiber products, including rare-earth doped, gyro, polarization-maintaining, radiation resistant, photosensitive, multimode and single mode, and any other optical fiber product including custom optical fibers, may be covered by one or more of the following pending or issued U.S. Patents, each of which is owned by or licensed by Nufern:

6,779,364; 6,832,026; 6,904,214; 6,950,586; 7,003,206; 7,050,686; 7,062,137; 7,110,647; 7,116,887; 7,167,621; 7,317,857; 7,371,019; 7,386,210; 7,400,812; 7,483,610; 7,634,164; 7,724,422; 5,949,941 (licensed from Furukawa Electric Co. of North America).

Moreover, use of Nufern’s optical fiber products, including modifications thereof, combinations with other products, or certain specific uses can necessitate additional customer licensing, particularly with respect to U.S. Patent nos. 5,818,630 (IMRA America, Inc.) and 6,496,301 (The United States of America as represented by the Secretary of the Navy).  See the terms and conditions specific to your purchase.

RoHS Compliant