Sb-based coupled quantum wells for efficient broadband intersubband all-optical switches

V. Achanta, H. Yoshida, T. Mozume, T. Simoyama, H. Ishikawa
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引用次数: 2

Abstract

We optimized a cTQW structure for both switching energy and response time using InGaAs/AlAs/AlAsSb material system. In such a structure, we expect switching energy to be in the range of a few 100s to a few 10s of fJ (few 10s of nW) depending on the growth optimization. We estimated the LO-phonon assisted relaxation time to be about 500 fsec (switching speeds exceeding 1THz) with multi-wavelength applicability. This low energy and high speed QW structure is ideal for realizing highly efficient gate switch for futuristic all-optical communication networks with bit rates exceeding few 100 Gb/s.
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高效宽带子带间全光开关中基于sb的耦合量子阱
我们利用InGaAs/AlAs/AlAsSb材料体系对cTQW结构进行了开关能量和响应时间的优化。在这样的结构中,我们期望开关能量在fJ的几百到几十倍(nW的几十倍)的范围内,这取决于生长优化。我们估计lo声子辅助弛豫时间约为500 fsec(开关速度超过1THz),具有多波长适用性。这种低能量、高速的量子w结构是实现比特率超过100 Gb/s的未来全光通信网络的高效门开关的理想选择。
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