Title :
Suppression of idler spectral broadening in highly efficient fiber four-wave mixing by binary-phase-shift-keying modulation of pump wave
Author :
Tanemura, Takuo ; Lim, Han Chuen ; Kikuchi, Kazuro
Author_Institution :
Res. Center for Adv. Sci. & Technol., Univ. of Tokyo, Japan
Abstract :
Proposes and demonstrates a novel method of suppressing spectral broadening of the idler wave, which is generated in fiber four-wave mixing (FWM) pumped by a continuous wave. In this scheme, binary-phase-shift-keying (BPSK) modulation of the pump wave broadens the pump spectrum so that the Brillouin threshold for the pump power is increased, whereas it never affects the spectrum of the idler wave. By the 2-Gb/s BPSK modulation of the pump wave, we achieve a FWM efficiency as high as 10 dB, maintaining a side-band suppression ratio of the idler wave larger than 25 dB.
Keywords :
multiwave mixing; optical fibre dispersion; optical modulation; optical phase shifters; optical pumping; spectral line broadening; stimulated Brillouin scattering; 2 Gbit/s; BPSK modulation; Brillouin threshold; binary-phase-shift-keying modulation; continuous wave; fiber four-wave mixing; four-wave mixing efficiency; highly efficient fiber four-wave mixing; idler spectral broadening; idler wave; pump power; pump spectrum; pump wave; side-band suppression ratio; spectral broadening; spectral broadening suppression; Binary phase shift keying; Brillouin scattering; Fiber nonlinear optics; Four-wave mixing; Nonlinear optical devices; Optical fibers; Optical mixing; Optical pumping; Optical scattering; Phase modulation;
Journal_Title :
Photonics Technology Letters, IEEE
