REFLECTIVE PROBE TYPE APPARATUS FOR DETECTING GAS AND METHOD FOR DETECTING GAS USING OPTICAL FIBER WITH HOLLOW CORE

摘要

PURPOSE: A gas detecting device of a reflective probe type using an optical fiber with a hollow core are provided to reduce time for injecting gas inside the optical fiber by regulating the size of a hollow core of the optical fiber, thereby increasing the size of reflecting signals. CONSTITUTION: A gas detecting device of a reflective probe type using an optical fiber with a hollow core comprises a first optical fiber(10), a light source(30), a detection unit, and a second optical fiber(20). The first optical fiber comprises the core where the gas can be injected. The detecting unit detects lights reflected from one end of the first optical fiber through the other end of the first optical fiber and the gas inside the core of the first optical fiber using the reflected lights.