Using quantum-mechanical analysis, a strain-balanced stack of coupled GaN/AlGaNquantum wells has been engineered for bandwidth-optimized all-optical switching at low switching powers. Intersubband transitions between three conduction subbands provide the basis for the large, fast, nonlinear optical response. Optimized performance for a given symbol rate is obtained by engineering the response time and nonlinear phase shift.
Sun, Greg; Khurgin, Jacob B.; and Soref, Richard A., "Nonlinear all-optical GaN/AlGaN multi-quantum-well devices for 100 Gb/s applications at λ = 1.55 μm" (2005). Physics Faculty Publications. 22.
American Institute of Physics
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