4 x 4 InAlGaAs/InAlAs optical switch fabric by cascading Mach-Zehnder interferometer-type optical switches with low-power and low-polarization-dependent operation

Conference: IPRM 2011 - 23th International Conference on Indium Phosphide and Related Materials
05/22/2011 - 05/26/2011 at Berlin, Germany

Proceedings: IPRM 2011

Pages: 4Language: englishTyp: PDF

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Ueda, Yuta; Koyama, Noriaki; Kambayashi, Kazuki; Fujimoto, Shinji (Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan)
Utaka, Katsuyuki; Shiota, Takashi; Kitatani, Takeshi (Central Research Laboratory, Hitachi Ltd., 1-280, Higashi-Koigakubo, Kokubunji, Tokyo 185-8601, Japan)

High-speed optical switches are essential devices to construct next generation optical networks. We have studied on 2 x 2 Mach-Zehnder interferometer-type optical switches and demonstrated low-polarization-dependent switching operation with crosstalks of less than -20 dB and injection currents of about 5 mA, and response times of about 3 nanoseconds. In this work, our conventional 2 x 2 switch was extended to a 4 x 4 optical switch fabric by cascading approach. As a result, fundamental switching operation was confirmed with low power and low-polarization dependence.