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25 July 2022 Pulse and spectral responses of laser-excited twisted silica few-mode optical fiber with improved height of quasi-step refractive index profile
Anton V. Bourdine, Michael V. Dashkov, Artem A. Kuznetsov, Vladimir V. Demidov, Alexander S. Evtushenko, Alexey Yu. Barashkin, Egishe V. Ter-Nersesyants, Alexander A. Vasilets, Oleg G. Morozov, Vladimir A. Burdin, Konstantin V. Dukelskii, Airat Zh. Sakhabutdinov, Elena S. Zaitseva, Azat R. Gizatulin, Ivan K. Meshkov, Eugeniy V. Dmitriev, Yaseera Ismail, Francesco Petruccione, Ghanshyam Singh, Manish Tiwari, Juan Yin
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Proceedings Volume 12295, Optical Technologies for Telecommunications 2021; 1229509 (2022) https://doi.org/10.1117/12.2637910
Event: Nineteenth International Scientific and Technical Conference "Optical Technologies for Communications", 2021, Samara, Russian Federation
Abstract
This work presents some results of pulse and spectral responses, performed for laser-excited pilot sample of earlier on designed and fabricated chiral silica few-mode optical fiber (FMF) with induced twisting 66 revolutions per meter (rpm), typical (for telecommunication optical fibers) cladding diameter 125 μm, weakly increased core diameter up to 11 μm and numerical aperture NA=0.22, corresponding to improved height of quasi-step refractive index profile. Described FMF 11/125 provides propagation of 4 and 6 guided modes over “C” and “O”-bands, respectively. We present results of tests, focused on researches of few-mode effects, occurring under laser-excited optical signal propagation over pilot sample optical fiber, and their influence on pulse and spectral responses, including some measurements, performed for fiber Bragg grating, recorded in tested FMF 11/125.
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Anton V. Bourdine, Michael V. Dashkov, Artem A. Kuznetsov, Vladimir V. Demidov, Alexander S. Evtushenko, Alexey Yu. Barashkin, Egishe V. Ter-Nersesyants, Alexander A. Vasilets, Oleg G. Morozov, Vladimir A. Burdin, Konstantin V. Dukelskii, Airat Zh. Sakhabutdinov, Elena S. Zaitseva, Azat R. Gizatulin, Ivan K. Meshkov, Eugeniy V. Dmitriev, Yaseera Ismail, Francesco Petruccione, Ghanshyam Singh, Manish Tiwari, and Juan Yin "Pulse and spectral responses of laser-excited twisted silica few-mode optical fiber with improved height of quasi-step refractive index profile", Proc. SPIE 12295, Optical Technologies for Telecommunications 2021, 1229509 (25 July 2022); https://doi.org/10.1117/12.2637910
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KEYWORDS
Fiber Bragg gratings
Optical fibers
Digital micromirror devices
Refractive index
Laser optics
Single mode fibers
Fiber lasers
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