New high-temperature coating for single- and multimode fibers

j-fiber GmbH offers an improved high-temperature coating for its singlemode and multimode fiber portfolio. The new coating system benefits from:

  • superior microbending performance (Table 1)
  • improved coating strippability (Table 2)
  • low loss at low and high temperatures (0,05 dB/km, Fig. 1)
  • low loss after coloring (Fig. 2)

The upper use temperature is +150°C long-term and 200°C short-term, thereby maintaining the excellent high-temperature stability of the former coating system.
The new high-temperature coating complies with current Rohs and Reach regulations.

Table 1: Attenuation increase at strong microbending (tight buffer cabled multimode fiber, 1300nm)
 Typ. Attenuation Increase at -45°CTyp. Attenuation Increase at -65°C
New Coating System< 0,4 dB/km< 1,5 dB/km
Former Coating System< 1,5 dB/km< 3 dB/km
Table 2: Improved strippability of new coating system
 Typical Average Strip Force (N)Typical Peak Strip Force (N)
New Coating System< 2,5< 4
Former Coating System< 3,5< 5

Figure 1: Temperature Cycling from -65°C to +135°C (loose coil).

Figure 2: Attenuation increase after coloring compared to the natural fiber.