Open AccessАкустооптические модуляторы с расширенной частотной полосой для волоконно-оптических линий
Author(s) -
В.М. Епихин,
А.В. Рябинин
Publication year - 2021
Publication title -
žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-748X
pISSN - 0044-4642
DOI - 10.21883/jtf.2021.06.50874.330-20
Subject(s) - optics , electro optic modulator , center frequency , pulse width modulation , frequency modulation , materials science , modulation (music) , optical modulator , wavelength , beam (structure) , switching time , physics , radio frequency , optoelectronics , phase modulation , telecommunications , band pass filter , computer science , acoustics , quantum mechanics , voltage , phase noise
A modulator-frequency shifter with single-mode optical fibers for a radiation wavelength of 1064 nm has been developed and manufactured. The light beam was focused in the center of the sound column. Modulator switching time ≃ 18 ns. Operating mode: pulse, continuous. Total optical loss at center frequency: -3.2 dB. An expression for the frequency band of reception of the modulator is obtained. The estimates are in good agreement with the experimental data ≃ 40 MHz. It is shown that the use of a scheme with a focused beam makes it possible to implement a modulator with a minimum switching time ≃ (2-3) ns and a receiving frequency band ≃ (200-300) MHz.