Super flat optical frequency comb signal generator

摘要

An optical frequency COM generator generating an optical frequency COM having flat spectrum characteristics using a single modulator. The optical frequency COM generator has a drive signal system (11) and a bias signal system (14) which drive a first drive signal (9), a second drive signal (10) and bias signals (12, 13) to satisfy the following expression (I). ΔA+Δθ=π/2 (I). (where, ΔA and Δθ are defined as ΔA≡(A₁−A₂)/2 and Δθ≡(θ₁−θ₂)/2, respectively, A₁ and A₂ represent the amplitudes of the first and second drive signals when they are inputted to the electrodes of the first and second drive signals, respectively, and θ₁ and θ₂ represent the phases of bias voltages applied to first and second waveguides, respectively.)