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Low-loss fibre-pigtailed 256 channel arrayed-waveguide grating multiplexer using cascaded laterally-tapered waveguides

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9 Author(s)
Ishii, M. ; NTT Photonics Labs., NTT Corp., Ibaraki, Japan ; Takagi, A. ; Hida, Y. ; Itoh, M.
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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

Published in:

Electronics Letters  (Volume:37 ,  Issue: 23 )