Near-infrared polarized glass is widely used in optical communication,optical modulator and laser industry because of its excellent polarization performance,high transmittance,low plug loss in the near-infrared band and excellent durability.This kind of material is prepared by forming a long rod or needle array of nano-metal particle structure in the glass,and the main preparation method is stretching-reduction method.The principle of polarization and performance testing of near-infrared polarized glass are introduced in detail.The current research status of main near-infrared polarized glass system and preparation technology of near-infrared polarized glass at home and abroad are reviewed.The development of near-infrared polarized glass is also prospected.
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