| http://www.w3.org/ns/prov#value | - (a) forming a lens precursor on the end face of the core by discharging a liquid drop on the end face of the core, at an end of an optical fiber including a core and a clad; and (b) forming a lens by curing the lens precursor; (c) forming the end of the optical fiber so that the end face of the core differs in height from the end face of the clad, prior to (a) and (b); removing the clad around the
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