In this contribution, we report a home-made single polarization fiber using pit-in-jacket method. The single polarization fiber is realized by using PANDA structure. A piece of the single polarization fiber with the length of 5m is used to test the polarization window and extinction ratio. The central wavelength is 1064nm. This fiber can keep single-polarization transmission in 140 nm bandwidth range. Moreover, it also shows high extinction ratio of 40 dB. The experimental result indicates that the performance of the domestic SPF is close to the imported fiber.
KEYWORDS: Doping, High power fiber lasers, Fiber lasers, Ytterbium, Aluminum, High power lasers, Cladding, Refractive index, Laser optics, Quantum efficiency
In this report, two kinds of ytterbium doped double-cladding fibers (YDFs) are fabricated by Modified Chemical Vapor Deposition (MCVD) in conjunction with solution doping technology. The fiber core contains SiO2, Yb2O3, Al2O3, and P2O5. After testing in a master oscillator power amplifier (MOPA) configuration, the maximum laser output power of 25μm-core YDF and 30μm-core YDF reaches 3kW and 10kW. In addition, nonlinear effects are not found in the experiment. The experiment results experience that solution doping is a promising technology to fabricate high power laser fiber.
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