Spatial filter for improving polarization ratio in a proton exchange wave guide device

摘要: A proton exchange polarizer with a spatial filter positioned to reduce cross coupling of unguided radiation. photoconductor substrate is fabricated from LiNbO3 or LiTaO3. The has located at primary reflection point on bottom the so as block TM mode light reaching output substrate. by physical chemical methods such saw cutting, diamond machining, etching, micro-machining, laser-machining and/or damaging surface attenuated blockage interruption transmissive region.