Title :
Slab-waveguide irradiation of UV laser light for photosensitive phase error compensation of arrayed-waveguide gratings
Author :
Takada, Kazumasa ; Abe, Makoto
Author_Institution :
NTT Photonics Labs., NTT Corp., Ibaraki, Japan
fDate :
6/1/2002 12:00:00 AM
Abstract :
The photosensitive refractive index change in a slab waveguide was utilized to compensate for the phase error of an arrayed-waveguide grating. The UV laser irradiation of a slab waveguide has certain advantages. The irradiation of several different parts of the waveguide can compensate for a large phase error of the order of ten radians. Phase error compensation can be achieved even when there is no space on the arrayed-waveguide part to place a mask for irradiation.
Keywords :
diffraction gratings; error compensation; integrated optics; laser beam effects; optical arrays; optical crosstalk; optical planar waveguides; phase control; refractive index; ultraviolet radiation effects; AWGs; UV laser irradiation; adjacent crosstalk; arrayed-waveguide grating; mask window design; phase control; phased array; photosensitive phase error compensation; planar waveguides; slab-waveguide irradiation; transmission spectra; Arrayed waveguide gratings; Error compensation; Optical arrays; Optical refraction; Optical variables control; Optical waveguides; Phased arrays; Slabs; Waveguide lasers; Waveguide transitions;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2002.1003102
