Bend-insensitive PM Fiber for DevicesBend-insensitive PM Fiber for Devices

The bend-insensitive PM fiber for devices is a high-performance specialty fiber designed for high-density optical interconnects, miniaturized optical devices and bend-insensitive applications. It uses a mature and reliable Panda structure with symmetric, regular dual circular stress elements, offering high birefringence, excellent grindability, low transmission loss and good geometric consistency. Through a special waveguide structure and optimized stress elements, its bending performance is markedly improved, with bend radii down to 7.5 mm or 5 mm, ensuring very low bending loss and a stable polarization extinction ratio at small bend radii.

The series covers the two mainstream telecom wavelengths of 1310 nm and 1550 nm, in two bend-performance grades: BIR7.5 and BIR5. The BIR7.5 type has a minimum bend radius of 7.5 mm, and the BIR5 type reduces it further to 5 mm, suiting miniaturized devices with limited layout space and high-density optical interconnects. With excellent bending-loss control and stable polarization retention, it supports the high-density upgrade of optical networks, data communication and data centers.