A temperature insensitive arrayed waveguide grating (TI-AWG) with an I
nGaAsP-InP material system is proposed, Less than 0.1 Angstrom/degrees
C temperature dependence for all eight channels was achieved for the
first time even though we used the InGaAsP-InP material system, This n
ovel characteristic is in good agreement with the design principle of
the TI-AWG.