Title :
Fabrication of variable bandwidth filters using arrayed-waveguide gratings
Author :
Okamoto, K. ; Ishii, M. ; Hibino, Y. ; Ohmori, Yutaka
Author_Institution :
NTT Opto-Electron. Labs., Ibaraki
fDate :
8/31/1995 12:00:00 AM
Abstract :
Variable bandwidth filters have been fabricated using silica-based N×N arrayed-waveguide gratings. The centre wavelengths are λ0=1.55 μm for all channels. The 3 dB bandwidths are 40, 78, 116 and 154 GHz, for the filter with a path length difference ΔL=63 μm. In the filter with ΔL=8.6 μm, the 3 dB bandwidths are 414, 769, 1198 and 1608 GHz. The on-chip losses are 2.1-2.9 dB and sidemode suppression ratios are larger than 27 dB
Keywords :
diffraction gratings; optical fabrication; optical waveguide filters; 2.1 to 2.9 dB; 40 to 154 GHz; 414 to 1608 GHz; SiO2; arrayed-waveguide gratings; fabrication; on-chip losses; path length difference; sidemode suppression ratios; silica; variable bandwidth filters;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19951061
