TUNABLE FILTER MODULE USING MULTIPLE SUPERIMPOSED FIBER GRATINGS

摘要

Disclosed is a tunable filter module using a multi-superimposed optical fiber grating. According to an embodiment of the present invention, the tunable filter module includes: a cantilever-shaped metal panel including a multi-superimposed optical fiber grating superimposed with multiple optical fiber gratings reflecting different specific wavelength bands, and of which end is fixed to a support member; an external force generating unit applying external force to the other end of the metal panel in upper and lower directions; a first support member installed with a predetermined distance away from the lower surface of the metal panel; and a second support member installed with a predetermined distance away from the upper surface of the metal panel to be the opposite to the first support member, having the metal panel between the first and second panels. At this point, the first and second support members prevent the metal panel from being curved when the external force is applied to the other end of the metal panel in upper and lower directions.