Patent ID: 8705980
Filing Date: 2014-04-22
Classification: G02F,H04B

Abstract:
1. An optical modulation device comprising: a converter that receives a data signal having a bit rate of B[Gb/s], divides the data signal into N data strings each having a bit rate of B/N (N is an integer equal to or greater than 2)[Gb/s], and extracts at least one clock signal from the data signal; a synchronization unit that synchronizes the N data strings; a light source that emits continuous wave light; an optical demultiplexer that splits the continuous wave light into N light beams; a modulator unit that generates N optical signals by modulating the N split continuous wave light beams according to the synchronized N data strings; and an optical frequency shift unit that shifts center frequencies of the N optical signals by Δf=B/(2N)[GHz] according to the clock signal.