Large-core preform is a kind of preform specially designed and developed for the field of energy transmission and sensing. This series of preforms are prepared by in-tube chemical vapor deposition process, which has the advantages of high numerical aperture and good geometric uniformity. This series of products are widely used in laser energy transmission, data communication and other energy transmission, sensing and other fields.
Product Characteristics:
*High numerical aperture
*Good geometric uniformity
*Good refractive index distribution and uniformity
Specifications:
| Features |
Unit |
Product Indicator |
| Core material |
/ |
Low-hydroxy pure silica quartz core |
| Cladding material |
/ |
Fluorine-doped quartz cladding |
| Numerical aperture |
|
0.06~0.24 |
| Geometric performance |
| Length of preform |
mm |
≤700.0 |
| Outer diameter of preform |
mm |
≤22.0 |
| CCDR |
|
≤1.25 |
| Core-cladding concentricity |
mm |
≤0.2 |
| Out-of-roundness of preform |
/ |
≤1.0% |
Customized Information:
Double-clad large-core preforms can be customized
For small numerical aperture, larger size preforms can be customized
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