ZBLAN fibers can transmit single-mode light up to a wavelength of 4 μm by adjusting the core diameter and NA. SMFF(single mode fluoride fiber) can transmit light more stably than MFF and is more suitable for accurate spectroscopy. In particular, there are many strong absorption bands due to C-H and N-H vibration at a wavelength band of 3 μm. Non-doped SMFF is commonly used in infrared spectroscopy as an optical guide.
■ Non-doped SMFF Loss Spectrum
| Item | ZSF-6/125 -N-0.20 |
ZSF-6/125 -N-0.26 |
ZSF-7.5/125 -N-0.20 |
ZSF-7.5/125 -N-0.26 |
ZSF-9/125-N-0.20 | ZSF-9/125 -N-0.26 |
|
Fiber Type
|
Step Index Type Single Mode Fiber
|
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|
NA
|
0.20±0.01
|
0.26±0.01
|
0.20±0.01
|
0.26±0.01
|
0.20±0.01 | 0.26±0.01 |
|
Cut-off Wavelength(µm)
|
<1.85
|
<2.4
|
<2.3
|
<2.9
|
<2.6 | <3.45 |
|
Loss@1.5µm(dB/m)
|
<0.1 |
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Core Diameter(µm)
|
6±1
|
6±1
|
7.5±1
|
7.5±1
|
9±1 | 9±1 |
|
Cladding Diameter(µm)
|
123±3 |
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Coating Diameter(µm)
|
460±30
|
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Core/Cladding Glass
|
ZBLAN Fluoride Glass
|
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Coating Material
|
UV Curable Acrylate
|
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Proof Test
|
1.25cm Radius
|
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■ Parameters for Custom SMFF
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Parameters
|
Value
|
|
Fiber type
|
Step Index Type Single Mode Fiber
|
|
Cut-off wavelength(µm)
|
0.6 ~ 2.5μm
|
|
NA
|
0.16±0.02, 0.21±0.02, 0.26±0.02
|
|
Core diameter(µm)
|
2 ~ 12μm
|
|
Cladding diameter(µm)
|
123±3
|
|
Coating diameter(µm)
|
460±30
|
|
Coating Material
|
UV Curable Acrylate
|
|
Proof Test
|
1.25cm Radius
|
