Optical Crosstalk Enhanced PLC-type Digital Optical Switch

摘要

The present invention relates to an improved optical crosstalk PLC (Planar Lightwave Circuit) type digital optical switches, by optical confinement (optical confinement) is applied to the linear optical waveguide of the tapered structure Y- branch arm (arm) of the radial attenuator is so weak, that the optical attenuation at the same temperature is generated more effectively improve the light characterized in that the cross-talk The. Further, by heating the thermal optical attenuator of a radial acceleration to the Y- branch arm of the central top line to an incident light ray and a radiation disposed at a side of the optical waveguide, the optical cross-talk by the additional light attenuation can be further improved .