Title :
Performance analysis of a dispersion compensator using arrayed-waveguide gratings
Author :
Tsuda, Hiroyuki ; Takenouchi, Hirokazu ; Hirano, Akira ; Kurokawa, Takashi ; Okamoto, Katsunari
Author_Institution :
NTT Photonics Labs., Kanagawa, Japan
Abstract :
We have developed a dispersion compensator that uses arrayed-waveguide gratings (AWGs) and a spatial filter. The compensator using AWGs with 380 waveguides in each array and the diffraction order of 53, can compensate a total second-order dispersion of 260 ps/nm with an eye-closure penalty of 1 dB for a 40-Gb/s nonreturn-to-zero (NRZ) signal. It is shown that the required spatial resolution of the spatial phase filter for compensation is 2.55 /spl mu/m for silica AWGs of usual design. The acceptable fluctuation in the refractive index of the waveguides in the AWGs is as large as 5/spl times/10/sup -5/.
Keywords :
compensation; diffraction gratings; optical arrays; optical communication equipment; optical design techniques; optical fibre dispersion; optical waveguides; spatial filters; 40 Gbit/s; Gb/s nonreturn-to-zero signal; arrayed-waveguide gratings; diffraction order; dispersion compensator; eye-closure penalty; performance analysis; second-order dispersion; silica AWGs; spatial filter; spatial phase filter; Arrayed waveguide gratings; Laboratories; Optical fiber dispersion; Optical filters; Optical interferometry; Optical pulse compression; Optical refraction; Optical signal processing; Optical waveguides; Performance analysis;
Journal_Title :
Lightwave Technology, Journal of
