In-fiber modal interferometer based on dual-core photonic crystal fiber and its application in fiber laser

摘要

An in-fiber modal interferometer is proposed by splicing a section of homemade dual-core dual-core photonic crystal fiber and two segments of single-mode fibers with the air-holes collapsed in the splice regions. With the proposed interferometer as wavelength-selective filter, a room-temperature switchable multi-wavelength fiber laser is proposed and experimentally demonstrated.