Coherent Corp. (NYSE: COHR) introduced a new generation of polarization-maintaining optical fiber designed to advance high-performance fiber laser systems, particularly narrow-linewidth and single-frequency 1550 nm amplifiers used in long-range LIDAR, wind energy, and air-traffic sensing. The new fiber, designated PLMA-EYDF-25P/300-XPH-11FA, combines a larger mode effective area with enhanced polarization-maintaining properties to suppress nonlinear effects and boost power scalability.
The product delivers improved pointing stability and low 1 µm amplified spontaneous emission (ASE) noise. When used with its matched passive fiber, PLMA-GDF-25/300, the system achieves superior beam quality and polarization extinction ratio. These capabilities make it suitable for demanding applications in quantum technology, high-precision materials processing, medical laser systems, and scientific research, addressing a key industry need for scalable, high-performance 1550 nm fiber lasers.
The PLMA fiber incorporates Coherent’s proprietary doped core materials and advanced waveguide design to achieve both reliability and manufacturability at scale. The company described it as a major advancement in fiber laser technology, with potential benefits across emerging sensing and industrial markets.
• Model: PLMA-EYDF-25P/300-XPH-11FA (active)
• Wavelength: 1550 nm operation
• Larger mode effective area for higher power scalability
• Enhanced polarization-maintaining performance
• Low 1 µm ASE noise and improved pointing stability
• Matched passive fiber: PLMA-GDF-25/300
• Core material: optimized EYDF doped glass
• Key applications: long-range LIDAR, quantum technology, materials processing, medical and research lasers
“We are excited to introduce this cutting-edge PLMA fiber to the market,” said Dr. Clemence Jollivet, Senior Director and General Manager of Coherent’s Fiber Division. “By leveraging our advanced material science, waveguide design, and manufacturing expertise, we have developed a product with a best-in-class doped core material. It marks a significant leap forward in laser technology, offering customers the superior performance and reliability required for their most demanding applications.”
🌐 Analysis: Coherent continues to expand its position in specialty fiber manufacturing, complementing its leadership in optical components and high-power laser materials. This launch aligns with the rising global demand for 1550 nm laser platforms in remote sensing and quantum research, areas also being targeted by Lumentum, NKT Photonics, and Thorlabs. Coherent’s integration of material science and optical design underlines its strategic focus on end-to-end photonics innovation.
