Bending insensitive standard polarization maintaining fiber 450-1550nm cladding 125um

Idealphotonics' panda shaped and bow tie shaped single-mode polarization maintaining (PM) fibers. Both are named according to the stress bars used. The stress rod is parallel to the fiber core, and the applied stress generates birefringence inside the fiber core, thereby maintaining polarization. The panda shaped stress bar is cylindrical, while the bow tie type uses a trapezoidal prism stress bar, as shown in the above figure. Usually, these two types of optical fibers can be used interchangeably. Panda shaped optical fibers have been used in the field of communication because cylindrical stress rods are easier to maintain uniformity over long distances during production. Polarization maintaining (PM) fibers are designed to provide high-level polarization maintenance for wavelengths ranging from 488nm to 1550nm and above. These fibers can be used for interferometric sensors, modulators, delay lines, spectroscopy, and biomedical applications. We use a "bow tie" stress applying component (SAP) to generate birefringence in the fiber core. These efficient SAP designs can generate very high birefringence without excessive stress, effectively controlling the polarization orientation of the entire fiber system. The bow tie PM fiber core is flanked by high expansion, boron doped glass regions on both sides, which shrink more than the surrounding silica

Coractive DCF polarization maintaining double clad passive fiber

Panda-type PM fiber

The Panda-type polarization-maintaining optical fiber for fiber optic gyroscope (FOG) sensing coils is specifically designed for FOG sensitive coils. To meet the demands of its application environment, the fiber features improved mechanical reliability, temperature stability, environmental adaptability, and radiation resistance. 

Elliptical-Core Polarization-Maintaining Fiber

The elliptical-core polarization-maintaining fiber offers excellent temperature stability and birefringence performance, making it suitable for a wide range of applications including fiber optic gyroscopes, current transformers, and other polarization-sensitive devices. By optimizing the fiber core and cladding structure, this elliptical-core fiber achieves improved uniformity and birefringence. As a geometric-birefringence type of polarization‑maintaining fiber, it is less affected by ambient temperature variations and provides better temperature stability.

Bow-Tie Polarization-Maintaining Fiber

The bow-tie polarization-maintaining fiber is a specially designed stress-induced polarization-maintaining fiber whose structural features provide excellent polarization-maintaining performance. The fiber offers optimized axial uniformity and batch-to-batch consistency, along with excellent temperature stability and birefringence, making it widely applicable in fiber optic gyroscopes, current transformers, and other polarization-related devices.

Elliptical-Cladding Polarization-Maintaining Fiber

The elliptical-cladding polarization-maintaining fiber is a specially designed stress-type PM fiber, whose structural characteristics provide excellent polarization-maintaining performance. Compared with bow-tie PM fibers, the elliptical-cladding design offers lower process complexity and better geometrical uniformity. By optimising the axial uniformity of the fiber and adopting independently developed inner and outer coating materials, this fiber exhibits outstanding temperature stability and birefringence performance. It is widely used in fiber optic gyroscopes, current transformers, and other polarization-sensitive components

Device Polarization-Maintaining Fiber

Device polarization maintaining fibers can be divided into panda type, bow tie type, and elliptical cladding type according to their structure, and can be classified into tail fiber type, coupler type, and polarization maintaining fiber for integrated devices according to their applications.