The present invention discloses the making process of optical fiber grating with arbitrary wavelength and arbitrary wavelength interval reflective spectrum. Amplitude grating with transmissibility modulation function the same as the reflecting spectrum distribution function of the required optical fiber grating is selected and used to diffract the vertically incident parallel ultraviolet ray, and the diffracted ultraviolet ray is converged with a quartz lens to obtain ultraviolet ray distributing function as the first Fourier transformation of transmissibility modulation function of the amplitude grating in the back focus plane of the lens. The converged ultraviolet ray is used to expose the photosensitive optical fiber via the phase mask plate in the back focus plane. The present invention is significant in the industrialization of optical fiber grating with arbitrary wavelength and arbitrary wavelength interval reflective spectrum.
|Publication status||Published - 14 Jul 2004|