Investigation of Polarization Characteristics of Active Tapered Fibers

A stand for studying the polarization characteristics of optical fibers by the Jones method was created and the characteristics of two samples of active tapered sT -DCF fibers were studied. Jones matrix and birefringence beat lengths for two samples was performed.

I. Introduction

Ytterbium-doped fiber lasers have become widespread due to their simple design, high radiation quality, and high efficiency. The use of ultra-short pulse fiber lasers for materials processing is of great interest nowadays [1]. To ensure high speed and accuracy of materials processing, simultaneously high peak and average output power at short pulses (up to tens ofps) with high repetition rate are required. However, the development of such an all-fiber system with high beam quality is quite challenging.