APPARATUS AND METHODS USING HOLLOW-CORE FIBER TAPERS

摘要

An optical device comprising a hollow-core fiber comprising: a first portion comprising a hollow core having a first diameter and a cladding having a second diameter; a second portion comprising a hollow core having a third diameter and a cladding having a fourth diameter, the third diameter smaller than the first diameter, wherein the difference between the first diameter and the third diameter is less than 10% of the first diameter; and a third portion having a hollow core having a fifth diameter and a cladding having a sixth diameter, the fifth diameter larger than the third diameter.