Large Mode Field Cutoff Free Single Mode Fiber

This kind of single-mode micro structure fiber realizes the cutoff free single-mode transmission characteristics on the light guide window through structural optimization. The cutoff free single mode characteristic of optical fibers enables single mode transmission in a large mode field area, ensuring the beam quality of the fundamental mode field, regardless of the fiber core size.

This fiber can be applied to high-power laser energy transmission with large mode field area and greatly reduces the occurrence of nonlinear effects.

Features

• Cutoff free single mode: All wavelengths within the 380nm-2200nm guiding window are transmitted in single mode, with low numerical aperture. When coupled with the laser, there is no need for mode matching, maintaining fundamental mode transmission;

• Provide customized design and production: Customizable mode field area (MFD) size and fiber zero dispersion point can be designed；

• Combining polarization maintaining fiber: By adjusting the structure design, the birefringence of the fiber is improved, forming a single mode transmission polarization maintaining fiber with no cutoff wavelength;

• Laser energy transfer: Pure quartz material without impurities, with high laser damage threshold and low spot darkening;

Application

• Mode filtering;

• Short pulse transmission;

• Energy transmitting fibers and cables;

• High power transmission of single mode laser;

• Multi wavelength transmission, Wavelength-division multiplexing;

• High precision laser fusion (single mode Gaussian spot)