High Precision Polarization Maintaining Fiber Array - China Suppliers & Factory for Laser and Sensor Applications
Product Introduction
In high-speed optical transceivers of 100G and above, especially coherent optical transceivers and silicon photonics transceivers, PM FAU (Polarization-Maintaining Fiber Array Unit) serves as the "key hub" for ensuring the stable transmission of polarized optical signals. Different from ordinary FAUs that only realize high-density coupling of optical signals, PM FAU uses special polarization axis alignment technology to accurately arrange polarization-maintaining fibers in fixed polarization directions (e.g., 0°/90°). While enabling parallel transmission of multi-channel optical signals, it effectively avoids polarization state crosstalk, providing core support for the signal integrity of high-speed optical modules.
Core Technical Advantages
- High-Precision Polarization Alignment: Through precision mechanical processing and optical calibration, the polarization axis alignment error can be controlled within ±1°, ensuring the polarization state of polarized optical signals remains stable during transmission. The minimum single-mode polarization-maintaining insertion loss is only 0.5dB, and the return loss exceeds 55dB.
- High-Density Integration: It supports multi-channel designs such as 8CH and 16CH, and the channel spacing can be customized according to module requirements (e.g., 250μm, 500μm), adapting to the packaging of miniaturized optical transceivers.
- High Environmental Adaptability: Adopting ceramic V-groove and metal shell packaging, it can withstand a wide temperature working environment from -40℃ to 85℃, with excellent anti-vibration and anti-shock performance, meeting the long-term stable operation needs of complex scenarios such as data centers and 5G base stations.
The PM FAU utilizes birefringence and an asymmetric structure to achieve an extinction ratio of ≥20 dB and a polarization axis deviation within ±3°, complying with the Telcordia GR-1221-CORE reliability standard.
Applications
- Data Center
- Communications
- Auto-driving
Characteristics
- High Extinction Ratio
- Low Loss
- Axis Alignment +/-2Deg