OPTICAL MODULE, AND DISPERSION SLOPE COMPENSATOR USING MODULE

摘要

PROBLEM TO BE SOLVED: To provide an inexpensive optical module and a dispersion slope compensator which suppress the increase of the number of component items even when the number of wavelengths to perform dispersion compensation is increased.

SOLUTION: The optical module is provided with an array waveguide diffraction grating 20 having: an optical input waveguide 2; a first slab waveguide 3; an array waveguide 4 composed of a plurality of channel waveguides 4a arranged side by side of length of set amounts different from each other; a second slab waveguide 5; and a plurality of optical output waveguides 6 arranged side by side. To at least one optical output waveguide 6 of the array waveguide diffraction grating 20, a grating part 7 for reflecting the output wavelength light of the corresponding optical output waveguide 6 is connected. The grating part 7 is provided with a dispersion amount varying means 19 for varying the dispersion amount of the reflected light wavelength of the corresponding grating part 7 by supplying heat distribution changing in a longitudinal direction.

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