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DOI: 10.17586/1023-5086-2024-91-03-14-22
УДК: 535.016
Stabilization of a system that enhances collinear interaction nonlinearity of light with a traveling refractive index grating
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Publication in Journal of Optical Technology
Gerasimenko V.S., Gerasimenko N.D., Petrov V.M. Stabilization of a system that enhances collinear interaction nonlinearity of light with a traveling refractive index grating [in Russian] // Opticheskii Zhurnal. 2024. V. 91. № 3. P. 14–22. http://doi.org/10.17586/1023-5086-2024-91-03-14-22
Vladislav S. Gerasimenko, Natalya D. Gerasimenko, and Viktor M. Petrov, "Stabilization of a system that enhances the collinear interaction nonlinearity of light with a traveling refractive index grating," Journal of Optical Technology. 91(3),142-146 (2024). https://doi.org/10.1364/JOT.91.000142
Subject of study. System of integrated electro-optical modulator and fiber circulating loop. Aim of study. Maximizing the nonlinearity of the response of an integrated electro-optical modulator and at the same time obtaining a stable output frequency spectrum. Method. Experimental studies of the spectra of optical (1550 nm) and radio-frequency (1 GHz) waves collinear interaction for various conditions of the back coupling system. Main results. It is experimentally demonstrated that to maximize the nonlinearity of the electro-optical modulator response in a fiber circulating loop, it is necessary to achieve not only in-phase wave propagation within the interaction region, but also phase coincidence at the beginning of the interaction region during each pass of the system. In this case, the main contribution to the number of peaks of the emerging optical frequency comb comes from the matching of the radio-frequency wave with itself. The stability of the output spectrum over time is primarily ensured by the self-consistency of the optical radiation phase. Practical significance. The scheme described in the article makes it possible to create discretely tunable sources of optical frequency combs, which in the future can be used, among other things, for fiber communication systems with frequency multiplexing.
traveling refractive index gratings, radio-frequency light modulation, phase modulation of optic wave, integrated optics
OCIS codes: 060.0060, 130.0130
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