Vol. 11, no.2, 2019
РусскийEnglish
RADIOELECTRONICS
GENERATION OF OPTICAL SIGNALS RESISTANT TO DISPERSION-INDUCED POWER DEGRADATION
Vladislav V. Shcherbakov, Anatoly F. Solodkov
Center for Fiber-Optic Information Transmission Systems, http://www.centervospi.ru/
3, Vvedenskogo St., Moscow 117342, Russian Federation
Anatoly A. Zadernovsky
MIREA-Russian Technological University (RTU-MIREA), http://mirea.ru/
78, Vernadskogo Аv., Moscow 119454, Russian Federation
Received 24.05.2019, accepted 30.05.2019
Abstract. A theoretical analysis is performed of transmission of optical signals in a fiber-optic link with external light intensity modulation by an electro-optic dual-drive Mach-Zehnder modulator and direct detection of the signals. The most general analytical expressions are obtained for the optical signals at the output from the modulator and at the receiving end of the fiber-optic link. Special attention is paid to the single-sideband-with-carrier (SSB+C) and the double-sidebands-with-suppressed-carrier (DSB+SC) modulation formats. A family of new SSB+C modulation formats of dual-drive Mach-Zehnder modulator is determined. Within the framework of linear approximation, the explicit expressions for SSB+C and DSB+SC optical signals are obtained. Transmission of such signals without dispersion-induced power degradation is clearly demonstrated.
Keywords: fiber-optic links, dual-electrode Mach-Zehnder modulator, fiber chromatic dispersion, single-sideband intensity modulation, suppressed-carrier intensity modulation
PACS: 85.60.Bt
RENSIT, 2019, 11(2):161-176 DOI: 10.17725/rensit.2019.11.161
Full-text electronic version of this article - web site http://en.rensit.ru/vypuski/article/283/11(2)161-176e.pdf