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Y-branch waveguides with stabilized splitting ratio designed by wavefront matching method

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7 Author(s)
Y. Sakamaki ; NTT Photonics Labs., NTT Corp., Kanagawa, Japan ; T. Saida ; T. Shibata ; Y. Hida
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We designed optical Y-branch waveguides with a stabilized splitting ratio by using a new design approach based on the wavefront matching method. The designed Y-branches were fabricated using silica-based planar lightwave circuit technology. We suppressed any variation in the splitting ratio of the Y-branch experimentally and obtained excess losses of <0.35 dB over a wide wavelength range of 1.3-1.7 μm.

Published in:

IEEE Photonics Technology Letters  (Volume:18 ,  Issue: 7 )