A new silica-based fiber design has been developed at Polymicro Technologies which exhibits improved transmission properties over a very wide spectral range. This fiber is known as FBPI fiber and can be produced in core diameters from 50μm to 600μm. In the NIR wavelength region to beyond 2100nm, the attenuation of the new fiber is similar to standard low -OH fibers. Simultaneously, the fiber has excellent UV transmission down to 200nm comparable to standard high -OH fibers.
Another important characteristic of optical fibers is its resistance to solarization damage caused by exposure to high levels of UV illumination. In the case of the new FBPI fiber, the UV-defect concentrations have been reduced significantly, such that the solarization degradation properties are close to UV optimized high -OH fibers with high radiation resistance.
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