title: Low control-power wavelength conversion on a silicon chip.
abstract: We demonstrate controlled wavelength conversion on a silicon chip based on four-wave mixing Bragg scattering (FWM-BS). A total conversion efficiency of 5% is achieved with strongly unbalanced pumps and a controlling peak power of 55 mW, while the efficiency is over 15% when using less asymmetric pumps. The numerical simulation agrees with the experimental results. Both time domain and spectral domain noise measurements show as low as 2 dB signal-to-noise ratio (SNR) penalty because of the strong pump noise, two-photon absorption, and free-carrier absorption in silicon. We discuss how the scheme can be used to implement an all-optically controlled high-speed switch.
authors.forename: Yun
authors.initials: Y
authors.lastname: Zhao
authors.forename: David
authors.initials: D
authors.lastname: Lombardo
authors.forename: Jay
authors.initials: J
authors.lastname: Mathews
authors.forename: Imad
authors.initials: I
authors.lastname: Agha