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We report on the generation of narrowband photon pairs at telecommunication wavelengths using a periodically poled lithium niobate waveguide that utilizes the nonlinear tensor element d(24) for type-II quasi phase matching. The FWHM bandwidth of the spontaneous parametric downconversion was 1 nm. The brightness of the photon pair source was ~6x10(5)/s/GHz… (More)
We propose a novel zero-chirp electro-optic modulator using resonant CPW electrodes operated with a single driving signal. The measured chirp parameter was below 0.1 at the frequency of 20.4GHz.