This paper describes the low attenuation at the 1400nm band of optical fiber, which depends on a deposited first cladding and core diameter ratio (D/d) of core rod on Vapor Phase axial Deposition (VAD) process and a dehydration method. By using the most suitable D/d for much more efficient productivity and the improved dehydration process, we developed Preform for Zero Water Peak Single Mode (ZWP-SM) fiber to produce over 1,300F.km.
We investigatge the optical characterstics improvement of holey fibers with the low bending loss fabricated by VAD method. The proposed holey fibers are applied to connection and integration for fabiration of compact optical devices.
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