Athermal arrayed waveguide grating capable of achieving wavelength stability within wide temperature range

The invention discloses an athermal arrayed waveguide grating capable of achieving the waveguide stability within a wide temperature range, which comprises an arrayed waveguide grating chip, wherein the arrayed waveguide grating chip includes an input waveguide, an input planar waveguide, an arrayed waveguide, an output planar waveguide and an output waveguide, the arrayed waveguide grating chip is divided into a first chip and a second chip but a cutting slit, and the cutting slit passes through the input planar waveguide or the output planar waveguide; the first chip and the second chip areprovided with a first driving rod and a second driving rod therebetween, and two ends of the first driving rod and the second driving rod are connected to the first chip and the second chip; and within a set temperature range, the first driving rod carries out linear undercompensation on the arrayed waveguide grating chip, and the second driving rod carries out linear overcompensation on the arrayed waveguide grating chip. The first driving rod and the second driving rod respectively carry out linear undercompensation and linear overcompensation on the arrayed waveguide grating chip at the setlow temperature state and the set high temperature state, thereby achieving a purpose of small overall wavelength offset within the set temperature range.