| 摘要 |
PURPOSE:To obtain the wavelength screening device which has high screening reproducibility and high stability with decreased losses. CONSTITUTION:One end face of a plane optical waveguide is formed to a cylindrical shape and a concave diffraction grating 5 is provided. An optical fiber array consisting of input/output optical fibers 1, 2 at the other end face is supported by a supporting part 6 and is driven by a driving part 7. The wavelengths of input light are screened by the position of the optical fiber array. |
