| Fiber Holder Bottom Insertsa |
| Item # |
Transfer
Insert |
Side 1 Min/Max
Accepted Diameter |
Side 2 Min/Max
Accepted Diameter |
Vacuum
Holes |
| VHD080 |
No |
57 µm / 100 µm |
N/A |
Yes |
| VHD125 |
No |
88 µm / 161 µm |
N/A |
Yes |
| VHD160 |
No |
112 µm / 208 µm |
N/A |
Yes |
| VHF160 |
Yesb |
| VHD250 |
No |
177 µm / 323 µm |
N/A |
Yes |
| VHF250 |
Yesb |
| VHD400 |
No |
279 µm / 519 µm |
N/A |
Yes |
| VHF400 |
Yesb |
| VHD500 |
No |
346 µm / 795 µm |
N/A |
Yes |
| VHF500 |
Yesb |
| VHD750 |
No |
516 µm / 1047 µm |
N/A |
Yes |
| VHF750 |
Yesb |
| VHE10 |
No |
773 µm / 1271 µm |
1034 µm / 1523 µm |
No |
| VHE15 |
No |
1280 µm / 1769 µm |
1534 µm / 2007 µm |
No |
| VHE20 |
No |
1787 µm / 2267 µm |
2033 µm / 2513 µm |
No |
| VHE25 |
No |
2270 µm / 2844 µm |
N/A |
No |
| VHE30 |
No |
2692 µm / 3198 µm |
N/A |
No |
- Two are Required to Use the LDC401 or LDC401A
- Clamp Fiber Outer Diameters from 57 µm to 3.198 mm when Used with Top Inserts (Available Above)
- VHD and VHF Series of Inserts Have Holes for Vacuum Suction to Aid in Positioning Small Fibers when Used in the LDC401 or LDC401A (See the Table to the Right)
- VHF Transfer Inserts are Used with VHT1 Transfer Clamp to Aid in Transferring a Fiber with ≤Ø1.047 mm Coating between Compatible Vytran Systems
- Interchangeable by the User
The large-diameter fiber cleavers require a pair of Top and Bottom Fiber Holder Inserts to be placed in each of the fiber holding blocks in order to clamp the fiber during the cleaving process. Each bottom insert has a V-Groove on one or both sides that can accommodate a range of diameters (as indicated in the table to the right).
Three types of bottom inserts are available for these large-diameter fiber cleavers. Standard bottom inserts for fiber with an outer diameter <Ø1.047 mm have vacuum holes to help position the fiber in the groove when loading the cleaver. For certain fiber diameters, we also offer transfer inserts (Item #s beginning with VHF) designed to work with the VHT1 transfer clamps (available below) that aid in moving the fiber between compatible Vytran stations while maintaining coarse alignment. The VHE series of fiber holder bottom inserts have a V-Groove on one (VHE25 and VHE30) or both sides (VHE10, VHE15, and VHE20) but do not include vacuum holes. The VHF transfer inserts and VHE bottom inserts can both be installed in other, compatible Vytran stations, although the VHE bottom inserts cannot be used with the VHT1 transfer clamp.
Bottom inserts are sold individually, and two are required to use the large-diameter cleavers. If using the fiber cleaver as a stand-alone device, the VHD series or VHE series inserts will be sufficient. If using the cleavers with other compatible Vytran systems, the bottom insert in the left fiber holding block can be replaced with a transfer insert and VHT1 transfer clamp (available below) for certain fiber sizes, as indicated in the table to the right. Typically, these transfer inserts would only be used in the left fiber holder block, as the right fiber holding block usually clamps the side of the fiber that will be discarded. The right fiber holding block of the LDC401 can accept transfer inserts, if desired, while the right fiber holding block of the LDC401A is incompatible with the transfer inserts, due to the presence of the rotation stage. For information on how to assemble transfer inserts, see the Fiber Holder Inserts tab.
The top (available above) and bottom fiber holder inserts can be paired in different combinations, outlined on the Fiber Holder Inserts tab above, to accommodate fiber with outer diameters from 57 µm to 3.198 mm. While the cleavers can only cleave fibers with cladding diameters from 80 µm up to 1.25 mm, the inserts can accommodate a wider range of outer diameters, as there are cases where the fiber should be clamped on the coating instead of the cladding. During a typical cleave, it is often desirable to clamp the cladding on the side to be discarded and the coating on the side of the fiber that will be retained. Alternatively, the fiber may be center stripped and the coating clamped on both sides (preferable in some cases, such as creating a firm clamp on non-circular fiber). Therefore, multiple combinations of top and bottom inserts may be required. The Fiber Holder Inserts tab above includes information to aid in selecting and installing the correct combinations of top and bottom inserts to accommodate fiber outer diameters from 57 µm to 3.198 mm.
