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日本电话电报公司茨城电气通信研究所的Y.Sasaki将于今年4月在美国菲尼克斯召开的光纤通信专题会议上作报告,介绍他们在试制单偏振光纤时进一步降低了光损耗方面的情况。它是一种保持偏振和降低了吸收损耗的光纤(简称PANDA),在1.54μm其损耗已低达0.4dB/km。这种PANDA光纤的纤芯和包层是采用人工合成的纯二氧化硅并通过VAD工艺制成的。在四周熔合的石英包层中,包含了由掺三氧化二硼的二氧化硅组成的二片附加物,其目的是为了
Y. Sasaki of the Nippon Telegraph and Telephone Corporation’s Ibaraki Institute of Electrical and Telecommunications will present a report on the topic of fiber-optic communications at the Phoenix in the United States in April this year to explain the further reduction of optical loss when trying out single polarized fibers. It is a fiber that retains polarization and reduces absorption loss (PANDA for short) and has a loss as low as 0.4 dB / km at 1.54 μm. The core and cladding of this PANDA fiber is made of synthetic silica pure VAD. In the surrounding fused silica cladding, two addenda consisting of silica-doped silica are included for the purpose of