RAYTEK - High-Precision Micro/Nano Photolithography Solutions
FGD Kilometer-Grade Fiber Bragg Grating Fabrication System for Optical Communication/Sensing
Product Overview
The FGD Series is a specialized system for femtosecond fiber grating fabrication with graphical patterning capabilities. It features a kilometer-scale fiber automatic spooling and processing system, supporting long-length fiber grating production for telecommunications, sensing, and other high-tech fields.
Key Applications
Fiber optic communications, optical sensing, aerospace, industrial monitoring, and various fiber grating-based devices.
Core Specifications
Fiber Length Capacity: > 5 km
- Winding Speed: 0 - 5 m/s
- Tension Control Accuracy: < 0.5 g
- Heterogeneity Accuracy: < 2%
- Automatic Alignment Accuracy: < 1 μm
- Fiber Grating Reflectivity: 0.001% - 90% (adjustable)
- Fiber Grating Side Mode Suppression Ratio: > 18 dB
- Fiber Grating Typical 3 dB Bandwidth: 0.2 nm
- Fiber Grating Central Wavelength Accuracy: ± 0.3 nm
Special Features
Capable of processing all mainstream types of fiber gratings
- Point-wise and scan-line fiber grating fabrication modes
- High-precision motion stage with exceptional positioning accuracy
- Optional fiber rotator and fiber stress monitor modules
- Imaging camera with greater than 5 million pixels for precise monitoring
This equipment enables maskless direct exposure on various photoresist-coated substrates-including glass, silicon wafers, and other planar materials. By precisely transferring custom microstructural patterns onto the substrate surface, it provides a flexible, high-precision manufacturing solution for producing diffractive optical components, MEMS devices, and related micro/nano structures.
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Specification |
| Surface Processing Feature Line Width |
<200nm |
| Waveguide Processing Loss |
<0.5dB/cm |
| Fiber Grating Processing Reflectivity |
0.001% - 90%, adjustable |
| Fiber Grating Side Mode Suppression Ratio |
>18dB |
| Fiber Grating Typical 3 dB Bandwidth |
0.2nm |
| Fiber Grating Central Wavelength |
≤0.3nm |



