Title :
Temperature-insensitive reflective arrayed-waveguide grating multiplexers
Author :
De Peralta, L. Grave ; Bernussi, A.A. ; Gorbounov, V. ; Temkin, H.
Author_Institution :
Dept. of Electr. & Comput. Eng., Texas Tech Univ., Lubbock, TX, USA
fDate :
3/1/2004 12:00:00 AM
Abstract :
We present a new approach to temperature compensation of silica-based arrayed-waveguide grating multiplexers. An external mirror rotating with temperature at a constant rate, in combination with a reflective multiplexer, is used to compensate for the temperature-induced change of the refractive index, and the resulting wavelength shift of individual channels, making the device athermal. A wavelength-temperature slope of less than 3.2×10-4nm/°C was obtained in the temperature range 5°C-70°C, without noticeable degradation in the device performance.
Keywords :
arrayed waveguide gratings; compensation; infrared spectra; mirrors; multiplexing equipment; optical communication equipment; refractive index; silicon compounds; wavelength division multiplexing; 5 to 70 degC; SiO2; athermal device; reflective multiplexer; silica-based arrayed-waveguide grating multiplexers; temperature compensation; temperature-induced refractive index change; temperature-insensitive reflective arrayed waveguide grating multiplexers; wavelength shift; Arrayed waveguide gratings; Mirrors; Refractive index; Silicon; Temperature dependence; Temperature distribution; Temperature sensors; Thermal degradation; Thermal expansion; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2004.823717
