Optical signal shaping device for complex spectral shaping applications

摘要

For example, the optical signal shaping apparatus provided by the present invention, such as a long period grating, is utilized in an optical fiber having a core of the first refractive index n ₁ and a cladding of the second refractive index n ₂ , and configured to transmit an optical signal. The optical signal shaping apparatus includes a long period grating of a predetermined length formed in an optical fiber. This long-period grating has a non-uniform refractive index perturbation over at least one portion of a predetermined length, resulting in a change in the optical signal resulting in an asymmetric optical signal.