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Wavelength-selective pulsed all-optical switching based on cascaded second-order nonlinearity in a periodically poled lithium-niobate waveguide

P. Kumar, M. Fejer, P. Kumar, 2001, IEEE Photonics Technology Letters.

Quantum-noise protected data encryption for WDM networks

Chuang Liang, P. Kumar, P. Kumar, 2004, Conference on Lasers and Electro-Optics, 2004. (CLEO)..