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Compact ARROW-type vertical coupler filter

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3 Author(s)
S. T. Chu ; Div. of Electr. & Comput. Eng., Yokohama Nat. Univ., Japan ; M. Miura ; Y. Kokubun

Compact wavelength filter utilizing the vertical coupling between a conventional ridge waveguide and a 3-D ARROW is proposed and demonstrated. Compact size and narrowband performance are achieved utilizing the large difference of waveguide dispersion between the 3-D ARROW and the ridge waveguide at single mode. A polyimide ridge waveguide was stacked on a stripe lateral confinement ARROW in an intersecting configuration with the interaction length of about 1 mm, and -3-dB linewidth of 5.5 nm was experimentally achieved.

Published in:

IEEE Photonics Technology Letters  (Volume:8 ,  Issue: 11 )