Title :
Compensation for Second-Order Temperature Dependence in Athermal Arrayed-Waveguide Grating Realizing Wide Temperature Range Operation
Author :
Kamei, Shin ; Shibata, Tomohiro ; Inoue, Yasuyuki
Author_Institution :
NTT Photonics Labs., NTT Corp., Atsugi, Japan
Abstract :
We propose a new compensation technique for the second-order temperature dependence in a silica-based arrayed-waveguide grating (AWG) multi/demultiplexer with a resin-filled groove that realizes a wide operating temperature range. We newly employ an additional interferometer in the input port and control the optical field perturbation by using a first-mode lightwave at the entrance to the first slab waveguide. We employ the design to fabricate a 32-channel 100-GHz-spacing athermal AWG that is as compact as a conventional AWG, and demonstrate a reduction in the passband wavelength variation from 70 to 22 pm over an extended - 40degC to 80degC temperature range.
Keywords :
arrayed waveguide gratings; demultiplexing equipment; interferometers; millimetre wave devices; silicon compounds; SiO2; athermal arrayed waveguide grating; compensation technique; frequency 100 GHz; multidemultiplexer; optical field perturbation; resin-filled groove; second-order temperature dependence; slab waveguide; temperature -40 degC to 80 degC; wide temperature range operation; Arrayed-waveguide grating (AWG); athermal; optical planar waveguide components; planar lightwave circuit (PLC); wavelength-division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2009.2031819
