Tamotsu Yajima

Low-loss photonic crystal fiber fabricated by a slurry casting method

We describe low-loss silica photonic crystal fiber fabricated by a slurry casting method with an OH reduction process that provides a highly flexible air-hole structure and a low fabrication cost. The loss was 1.1 dB/km at 1.55 μm.

OH-free low loss single-mode fibre fabricated by slurry casting / rod-in-tube method

We demonstrate a simple and low-cost process for fabricating low-loss SMF cladding preforms by a slurry casting method. The SMF drawn by a rod-in-tube method showed a minimum loss of 0.20 dB/km at 1.55 μm.

Fabrication of OH-free, single-mode fiber by using slurry casting and rod-in-tube method

We present a new simple and low-cost process for fabricating low-loss single-mode fiber (SMF) cladding preforms by a modified slurry casting method, in which the cladding preform and a core rod obtained separately with the VAD method are assembled by a rod-in-tube method. The fabricated SMF showed almost the same loss characteristics as a standard SMF with a minimum loss of 0.19 dB/km at 1550 nm and an OH-free loss spectrum, which were realized with an OH reduction process in a slurry casting based cladding. This OH reduction method plays an important role in preventing OH diffusion into the core and inner cladding.