Title :
All-optical 40 Gbit/s single-to-dual-channel simultaneous CSRZ wavelength conversion and format conversion
Author :
Wang, Jiacheng ; Sun, Qizhen ; Sun, Jian
Author_Institution :
Wuhan Nat. Lab. for Optoelectron., Coll. of Optoelectron. Sci. & Eng., Huazhong Univ. of Sci. & Technol., Wuhan
Abstract :
A novel realisation is reported of single-to-dual-channel simultaneous wavelength conversion for carrier-suppressed return-to-zero (CSRZ) and format conversion from CSRZ to return-to-zero (RZ) by exploiting cascaded second-harmonic generation and difference-frequency generation (cSHG/DFG) in a periodically poled lithium niobate (PPLN) waveguide. Two-channel converted idlers are obtained by two cSHG/DFG processes as the continuous wave (CW) pump and CSRZ signal are set close to the quasi-phase matching (QPM) wavelength of PPLN. All-optical 40 Gbit/s single-to-dual-channel simultaneous CSRZ wavelength conversion and CSRZ-to-RZ format conversion are successfully demonstrated in the experiment.
Keywords :
lithium compounds; optical fibre communication; optical harmonic generation; optical phase matching; optical pumping; optical waveguides; optical wavelength conversion; CSRZ format conversion; LiNbO3; PPLN; bit rate 40 Gbit/s; carrier-suppressed return-to-zero; continuous wave pump; difference-frequency generation; periodically poled lithium niobate waveguide; quasiphase matching; second-harmonic generation; single-to-dual-channel simultaneous CSRZ wavelength conversion;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20093226
