Fabrication of Erbium-Ytterbium Distributed Multi-Wavelength Fiber Lasers by Writing the Superstructured Fiber Bragg Grating Resonator in a Single Writing Laser Scan

摘要

We present an alternative method to fabricate multi-wavelength distributed-feedback fiber lasers made of superstructured chirped fiber Bragg gratings in a single writing laser scan with a custom period-profiled phase mask and a tailored amplitude apodization profile produced by phase mask dithering. This method simplifies the fabrication process and increases the yield of samples having the right number of laser lines and a small frequency error with respect to a reference grid.