 Glass-Ceramic
Ferrule GCF is suitable for single-mode optical connectors.
Durability matches or exceeds that of ceramic ferrules especially
under high-temperature and high-humidity conditions.
GCF can be polished quickly without using diamond polishing
film. The cost saving is substantial. The 1.25 GCF has a
concentricity of 0.001mm.
[NTT standard]
Features
<Concentric Positioning>
GCF features unique effect of concentric positioning that
causes self-alignment
of fiber around the center of inner diameter of
ferrule.
<Excellent Polishing Properties>
Polishing costs can be reduced dramatically compared with
conventional zirconia ferrules, because GCF requires no
diamond polishing film and the polishing time can be shortened.
<Environmental Durability>
Compared with ceramic ferrules, the durability of GCF is
superior under high-temperature and high-humidity conditions.
<Low Cost>
GCF costs less because of the way it's manufactured, utilizing
the thermal softening properties of glass.
Properties of Glass-Ceramic Ferrule
 |
GCF |
Alumina |
Zirconia |
| Bending strength (MPa) |
700 |
580 |
1350 |
| Thermal expansion coeff. (ppm/oC) |
2.7 |
6.8 |
8.3 |
| Young's modulus(GPa) |
82 |
380 |
190 |
| Vicker's hardness |
680 |
1800 |
1200 |
Dimensions   |
