|
SNOM probes characteristics (see scheme): |
|
|
Basic material |
high-performance select cutoff single-mode optical fiber Nufern |
|
Tip coating |
Al |
|
Tip angle |
25 – 30 degrees |
|
Maximum optical input power |
400 microwatt |
|
Sharpening method |
chemical etching |
|
Probe manufacturer |
|
|
Optical fiber geometrical & mechanical specifications: |
|
|
Cladding diameter |
125 μm |
|
Coating diameter |
245 μm |
|
Core-cladding concentricity |
< 0.5 μm |
|
Coating/cladding offset |
≤ 5 μm |
|
Coating material |
UV cured, dual acrylate |
|
Operating temperature |
– 55 to + 85°C |
|
Short-term bend radius |
³ 6 mm |
|
Long-Term Bend Radius (LTBR) |
³ 13 mm |
|
Proof test level |
³ 200 kpsi (1.4 GN/m2) |
|
|
|
Fig. 1. Scheme of SNOM probe. |
|
|
|
|
Fig. 2. Electron microscopy images of SNOM probe obtained with different magnifications. |
|
Basically we offer SNOM probes based on the following fibers: Nufern 460-HP (450–600 nm), Nufern 630-HP (600–770 nm), Nufern 780-HP (780–970 nm), Nufern 980-HP (980–1600 nm), and Nufern 1550B-HP (1460–1620 nm). On request probes based on Nufern 405-HP (400–550 nm) and other fibers (Nufern 1060-XP (980–1600 nm), Nufern 1310B-HP (1300–1625 nm)) are available. By special request we offer probes made of other fiber types according to customer specification.
