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Hybrid integrated symmetric Mach-Zehnder all-optical switch with ultrafast, high extinction switching

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11 Author(s)
Tajima, K. ; Optoelectron. & High Frequency Device Res. Labs., NEC Corp., Ibaraki, Japan ; Nakamura, S. ; Ueno, Y. ; Sasaki, J.
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A hybrid integrated symmetric Mach-Zehnder (HI-SMZ) all-optical switch is reported. It has a very high dynamic extinction ratio of >20 dB at a switching speed of <4 ps. No delay was found in its rise and fall times with 1 ps control pulses. Thus, the HI-SMZ all-optical switch is capable of high extinction, quasi-square-like modulation up to a speed of ~4 ps, corresponding to a bit rate exceeding 200 Gbit/s

Published in:

Electronics Letters  (Volume:35 ,  Issue: 23 )