Large Core Optical Fibers （Energy Transmission, Signal Transmission）
Fujikura's large core optical fibers are made of silica glass, thus have excellent transmission characteristics over the selected wavelength range, one is from UV to VIS, the other is from VIS to NIR. Moreover with its large core size it also can transmit high energy density of laser beam, which is demanded for applications of laser processing, laser therapy, optical sensors and spectral analyzers of weak light.
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Features
The large core optical fiber is made of pure silica showing various features for optical applications as follows;
- High Energy Density of Optical Transmission
- Excellent Optical Transmission Characteristics with the Wavelength Range Selectively from UV to VIS and from VIS to NIR.
- Mechanical Strength
- Heat Resistance
- Radiation Resistance
- UV Resistance
- Applicable for Biocompatibility (USP classⅥ)
Product Lineup
Large core optical fibers are provided with two types of optical transmission characteristics and also with two types of basic structures, which are utilized for various types of optical fiber applications.
[Product Lines by Transmission Characteristics]
- S series
Core Type: Step Index, High -OH Content
Low Transmission Loss at the Wavelength Range from UV to VIS
- SB series
Core Type: Step Index, Low -OH Content
Low Transmission Loss at the Wavelength Range from VIS to NIR
The optical transmission characteristics of each of S and SB series are shown below.
[Product Lines by Structures]
- Jacketed Optical Fiber: Coated with Polyamide.
If FEP, PFA, etc. are required, please contact us.
The basic structures of Larege Core Fibers are shown below.
* For high temperature environment (upto 300℃) application, optical fiber coated with polyimide is provided.
Applications
- Laser Processing (Cutting, Welding)
- Laser Peening
- Laser Therapy
- Optical Lithography
- Radiation Thermometer
- Spectral Analysis, Fluorometric Analysis
- Laser Excitation
- Lighting
* Please contact us for custom designing, prototyping and manufacturing of large core fiber products.
Specifications
S series (for UV-VIS)
| Model Name |
Refractive Index Profile |
Core / Cladding Material |
Core / Cladding Diameter [μm] |
Jacket Diameter [μm] |
Attenuation [dB/km] |
Coating / Jacket Material |
NA | Operation Temperature [°C] |
Minimum Bending Radius [mm] |
|---|---|---|---|---|---|---|---|---|---|
| S.200/220 | Step Index | SiO2 (High-OH) / F-SiO2 |
200 / 220 | 900 |
≤10 (@800nm) |
Silicone / Polyamide |
0.22 | -20 to 60 | 44 |
| S.400/440 | 400 / 440 | 1100 | 88 | ||||||
| S.600/660 | 600 / 660 | 1400 | 132 | ||||||
| S.800/880 | 800 / 880 | 1700 | 176 | ||||||
| S.1000/1100 | 1000 / 1100 | 2000 | 220 | ||||||
| S.1500/1650 | 1500 / 1650 | 2400 | 330 |
SB series (for VIS-NIR)
| Model Name |
Refractive Index Profile |
Core / Cladding Material |
Core / Cladding Diameter [μm] |
Jacket Diameter [μm] |
Attenuation [dB/km] |
Coating / Jacket Material |
NA | Operation Temperature [°C] |
Minimum Bending Radius [mm] |
|---|---|---|---|---|---|---|---|---|---|
| S.200/220B | Step Index | SiO2 (Low-OH)/ F-SiO2 |
200 / 220 | 900 | ≤10 (@850nm |
Silicone / Polyamide |
0.22 | -20 to 60 | 44 |
| S.400/440B | 400 / 440 | 1100 | 88 | ||||||
| S.600/660B | 600 / 660 | 1400 | 132 | ||||||
| S.800/880B | 800 / 880 | 1700 | 176 | ||||||
| S.1000/1100B | 1000 / 1100 | 2000 | 220 | ||||||
| S.1500/1650B | 1500 / 1650 | 2400 | 330 |
G series (for VIS-NIR)
| Model Name |
Refractive Index Profile |
Core / Cladding Material |
Core / Cladding Diameter [μm] |
Jacket Diameter [μm] |
Attenuation [dB/km] |
Coating / Jacket Material |
NA | Operation Temperature [°C] |
Minimum Bending Radius [mm] |
|---|---|---|---|---|---|---|---|---|---|
| G.200/250 | Graded Index | GeO2-SiO2 / SiO2 |
200 / 250 | 900 | ≤10 (@850nm) |
Silicone / Polyamide |
0.21 | -20 to 60 | 50 |
| G.400/500 | 400 / 500 | 1100 | 100 | ||||||
| G.600/750 | 600 / 750 | 1400 | 150 | ||||||
| G.800/1000 | 800 /1000 | 1700 | 200 |
Large Core Fiber : SB series (for VIS-NIR) High temperature resistant type
| Model Name |
Refractive Index Profile |
Core / Cladding Material |
Core / Cladding Diameter [μm] |
Coating Diameter [μm] |
Attenuation [dB/km] |
Coating Material |
NA | Operation Temperature [°C] |
Minimum Bending Radius [mm] |
|---|---|---|---|---|---|---|---|---|---|
| S.200/220BPI | Step Index | SiO2 (Low-OH)/ F-SiO2 |
200 / 220 | 245 | ≤10 (@850nm) |
Polyimide | 0.22 | -40 to 300 | 44 |
| S.300/330BPI | 300 / 330 | 360 | 66 | ||||||
| S.400/440BPI | 400 / 440 | 470 | 88 |