열적 확산 과정을 이용한 광섬유 격자의 공진 파장 제어

Abstract

In this paper, we proposed the controlling method of resonant wavelength of fiber grating using thermal diffusion process. We diffused dopants in core layer into cladding layer by thermal heat source. Through the thermal diffusion, effective index of the fiber was changed. The fiber grating was written with a uniform period phase mask by using UV exposure technique in the fiber whose effective index of the guided mode changed.