| http://www.w3.org/ns/prov#value | - Moreover, when the optical waveguide is an optical waveguide for single-mode having a communication wavelength of 1.31 ??m or 1.55 ??m, the core thereof has a thickness and a width of more desirably 5 to 15 ??m, particularly desirably about 10 ??m.
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