Shanghai Gengyun Industrial Co., Ltd
High-stability elliptical core polarization-maintaining special optical fiber
elliptical core polarization-maintaining fiber. is a unique waveguide structure to implement polarization-maintaining performance of high-tech fiber Its core adopts a carefully designed elliptical structure which utilizes the strong birefringence effect generated by the geometric shape itself to stabilize the polarization state of the transmitted light, thus playing an irreplaceable key role in various precision optical systems.
Its core advantages are as follows:
1. Excellent deviation retention performance
Compared with the traditional panda type or bow tie type polarization-maintaining optical fibers that depend on the stress zone. Unlike, elliptical core fiber directly generates strong waveguide birefringence through its non-circularly symmetrical geometry. This intrinsic birefringence effect can efficiently maintain the linear polarization state of the incident light, suppress the coupling between polarization modes, provide an extremely high extinction ratio, and ensure Polarization-preserving signal Stability and reliability in long-distance transmission.
Second, it has a stable structure and stronger environmental adaptability
Because it does not contain internal stress materials, the elliptical core fiber is significantly less sensitive to temperature changes and external bending stress than stress-type polarization-maintaining fiber Its performance remains highly stable within a wide temperature range and in harsh environments, making it highly suitable for applications in demanding scenarios such as aerospace, field sensing, and more.
Iii. Efficient coupling with semiconductor lasers
Its elliptical core geometry can achieve better mode matching with the common elliptical Gaussian mode of the output spot of semiconductor lasers, effectively reducing coupling insertion loss and improving the energy transmission efficiency from the light source to the fiber It is an ideal front-end input fiber for high-performance fiber lasers and modules.
In summary, Elliptical core polarization-maintaining special optical fiber with its unique structural advantages, provides a stable and reliable high-performance polarization-maintaining transmission solution. It is widely used in fiber optic gyroscope , hydrophone , coherent communication , high power fiber laser pump coupling and frontier such as distributed sensing system is to support the development of modern precision optics and photonics technology at the core of the basic components.
Keywords：
1：Elliptical core polarization maintaining fiber