Title :
Low-loss fibre-pigtailed 256 channel arrayed-waveguide grating multiplexer using cascaded laterally-tapered waveguides
Author :
Ishii, M. ; Takagi, A. ; Hida, Y. ; Itoh, M. ; Kamei, S. ; Saida, T. ; Hibino, Y. ; Sugita, A. ; Kitagawa, T.
Author_Institution :
NTT Photonics Labs., NTT Corp., Ibaraki, Japan
fDate :
11/8/2001 12:00:00 AM
Abstract :
A fibre-pigtailed 25 GHz-spacing 256 channel arrayed-waveguide grating (AWG) module has been fabricated. The module was composed of an AWG chip with a Δ of 1.5%, a fan-out planar lightwave circuit (PLC) with a A of 0.75%, an input fibre and two 128 fibre arrays. To improve the coupling loss of the 256 output fibres, a new PLC-fibre connection using cascaded laterally-tapered waveguides was developed. The fibre-pigtailing loss is reduced to only 1.1 dB and a multiplexer with a low insertion loss of 1.9-3.9 dB is realised
Keywords :
diffraction gratings; integrated optoelectronics; modules; multiplexing equipment; optical arrays; optical communication equipment; optical losses; optical planar waveguides; 1.1 dB; 1.9 to 3.9 dB; AWG chip; AWG module; PLC-fibre connection; cascaded laterally tapered waveguides; cascaded laterally-tapered waveguides; coupling loss; fan-out planar lightwave circuit; fibre arrays; fibre-pigtailing loss; input fibre; low insertion loss; low-loss fibre-pigtailed 256 channel arrayed waveguide grating multiplexer; output fibres;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20010963
