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A novel design proposal to minimize reflections in deep-ridge multimode interference couplers

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3 Author(s)
Y. Gottesman ; France Telecom, CNET, Bagneux, France ; E. V. K. Rao ; B. Dagens

We propose and demonstrate here the high efficiency of a novel design for deep-ridge multimode interference (MMI) couplers rendering them to behave like good transmitters with minimized reflections when integrated with emission devices. Using optical low-coherence reflectometry measurements, this novel design is shown to suppress to a great extent the highly detrimental internal resonance and often important backreflections inherent to even fully optimized deep-ridge MMIs.

Published in:

IEEE Photonics Technology Letters  (Volume:12 ,  Issue: 12 )