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随着光纤接入网的发展 ,对光纤器件的价格、性能等方面提出了更严格的要求。尤其是当光纤线路紧张时 ,需要进行单纤双向传输。滤光片是关键元件 ,它分别要求 1310nm透过时要大于 98%、15 5 0nm反射时要大于 95 %以上 ,或者 1310nm反射时大于 95 %、15 5 0nm透过时大于 98%以上 ,并且带宽为± 40nm。由于滤光片尺寸较小 ,必须切割划片 ,所以对膜层的牢固度有很高的要求。经过膜系优化和大量的工艺实验 ,提供的样品完全满足用户的要求 ,现已定型批量生产。
With the development of optical access network, more stringent requirements have been put on the price and performance of optical fiber devices. Especially when the fiber optic lines are tight, the need for single-fiber bidirectional transmission. Filters are key components that require greater than 98% transmission at 1310 nm, greater than 95% reflection at 1550 nm, greater than 95% reflection at 1310 nm, greater than 98% transmission at 1550 nm, and a bandwidth of ± 40nm. Due to the smaller filter size, you must cut the dicing, so the firmness of the film has high requirements. After membrane system optimization and a large number of experimental process, the sample provided to fully meet the needs of users, is now stereotypes mass production.