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4 ,\times, 4 InAlGaAs/InAlAs Optical-Switch Fabric by Cascading Mach–Zehnder Interferometer-Type Optical Switches With Low-Power and Low-Polarization-Dependent Operation

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7 Author(s)
Yuta Ueda ; Faculty of Science and Engineering, Waseda University, Tokyo, Japan ; Noriaki Koyama ; Kazuki Kambayashi ; Shinji Fujimoto
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High-speed optical switches are essential devices to construct next-generation optical networks. We have studied 22 InAlGaAs/InAlAs hybrid-waveguide-type Mach-Zehnder interferometer-type optical switches and demonstrated low-polarization-dependent switching operation with crosstalks of less than , injection currents of about 5 mA, and response times of about 3 ns. In this letter, our conventional 22 optical switch was extended to a 44 optical-switch fabric by a cascading approach. As a result, fundamental switching operation was confirmed with low power consumption and low polarization dependence.

Published in:

IEEE Photonics Technology Letters  (Volume:24 ,  Issue: 9 )