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QPM Wavelength Converter Using Direct-Bonded Ridge Waveguide With Integrated MMI Multiplexer

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3 Author(s)
Umeki, T. ; NTT Photonics Labs., NTT Corp., Atsugi, Japan ; Tadanagai, O. ; Asobe, Masaki

We fabricated a wavelength-division multiplexer for 0.78- and 1.56-μm light using multimode interference (MMI) in a direct-bonded LiNbO3 ridge waveguide. We obtained a low excess insertion loss of 1.0 and 0.5 dB for 0.78- and 1.56-μm light, respectively. We integrated a quasi-phase-matched (QPM) wavelength converter with an MMI multiplexer on one chip for the first time. We successfully demonstrated high-quality wavelength conversion based on difference-frequency generation with a parametric gain.

Published in:

Photonics Technology Letters, IEEE  (Volume:23 ,  Issue: 1 )