Conversion of LP11 modes to vortex modes in an adiabatically twisted highly birefringent optical fiber

Bernas, Marta; Żołnacz, Kinga; Napiórkowski, Maciej; Statkiewicz-Barabach, Gabriela; Urbańczyk, Wacław

doi:10.1117/12.2621167

Cited by 1 publication

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“…In further, changes in the birefringence of a fiber can be caused by its twist [17]. Investigation of twist induced birefringence has been a topic of investigation back to the late 1970s, early 1980s [18--20] and continued up to recent years [21], [22]. One of the most important parameters in these studies is the evolution of the polarization dependent loss (PDL) response of the fiber-based reflector with respect to the applied twist [23].…”

Section: Introductionmentioning

confidence: 99%

Wavelength-switchable L-band fiber laser assisted by random reflectors

Pérez-Herrera

Roldán-Varona

Sanchez-Gonzalez

et al. 2023

J. Eur. Opt. Society-Rapid Publ.

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A wavelength-switchable L-band erbium-doped fiber laser (EDFL) assisted by an artificially controlled backscattering (ACB) fiber reflector is here presented. This random reflector was inscribed by femtosecond (fs) laser direct writing on the axial axis of a multimode fiber with 50 µm core and 125 µm cladding with a length of 17 mm. This microstructure was placed inside a surgical syringe to be positioned in the center of a high-precision rotation mount to accurately control its angle of rotation. Only by rotating this mount, three different output spectra were obtained: a single wavelength lasing centered at 1574.75 nm, a dual wavelength lasing centered at 1574.75 nm and 1575.75 nm, and a single wavelength lasing centered at 1575.5 nm. All of them showed an optical signal-to-noise ratio (OSNR) of around 60 dB when pumped at 300 mW.

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