Patent ID: 7357521

Claim:
A chromatic dispersion compensation device comprising: a dispersion unit for separating incident light into light beams of respective different wavelengths; a transmitting lens receiving the light beams from said dispersion unit and outputting the light beams at different angles according to incidence positions of the light beams on the transmitting lens; and a group delay generation unit receiving the light beams from said transmitting lens, for adding propagation delays corresponding to incidence positions of the light beams on said group delay generation unit, and outputting the light beams of the different wavelengths; wherein a degree of divergence or convergence of the transmitting lens varies in a direction perpendicular to light beams incident and refracted thereon, and incidence intervals of the light beams on said group delay generation unit changes according to a position of the transmitting lens in said direction which is perpendicular to said light beams incident and refracted.