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The pure silica core energy-transmitting fiber has a step-index refractive index distribution. Its working window covers the wavelength range from 850 nm to 1300 nm. It can transmit relatively high laser power and has advantages such as low loss, a large numerical aperture, and a high damage threshold. You can choose different core diameters, cladding diameters, and numerical apertures. Moreover, we can provide customized services according to customers' requirements to maximally meet your various application needs.