Title :
Integrated-optic OFDM signal multiplexer composed of optical IFFT circuit
Author :
Takiguchi, K. ; Miwa, T.
Author_Institution :
Dept. of Electr. & Electron. Eng., Ritsumeikan Univ., Kusatsu, Japan
Abstract :
An integrated optical device that is able to multiplex modulated signals to an optical orthogonal frequency division multiplexing (OFDM) signal directly in the optical domain is demonstrated. The device operates based on optical inverse fast Fourier transform (IFFT). It is composed of directional couplers, delay lines and a combiner, which was fabricated with silica waveguide technology. The operation was experimentally confirmed by generating 40 and 80 Gbit/s optical OFDM signals.
Keywords :
OFDM modulation; fast Fourier transforms; integrated optics; multiplexing equipment; optical delay lines; optical directional couplers; optical waveguides; silicon compounds; SiO2; bit rate 40 Gbit/s to 80 Gbit/s; combiner; delay lines; directional couplers; integrated optical device; integrated-optic OFDM signal multiplexer; optical IFFY circuit; optical domain; optical inverse fast Fourier transform; optical orthogonal frequency division multiplexing signal; silica waveguide technology;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2014.3283
