First monolithically integrated ridge-waveguide InAs/InGaAs quantum-dot ring lasers are fabricated and characterized. Enhanced by a forward biased S-section waveguide, stable traveling-wave (unidirectional) operation with record suppression ratio of counterpropagating waves approaching 30 dB is demonstrated.
© 2005 Optical Society of America
H. Cao, H. Deng, H. Ling, C. Liu, V. A. Smagley, R. B. Caldwell, G. A. Smolyakov, A. L. Gray, L. F. Lester, P. G. Eliseev, and M. Osinski, "Unidirectional Operation of Quantum-Dot Ring Lasers," in Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science and Photonic Applications Systems Technologies, Technical Digest (CD) (Optical Society of America, 2005), paper CThO2.
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