Patent ID: 7982645
Filing Date: 2011-07-19
Classification: G02F,H04B,H04J

Abstract:
1. A device for generating an electrical signal with a wide band arbitrary waveform comprising: (i) at least two continuous wave lasers each being adapted to produce light at a different wavelength; (ii) at least one pulse generator adapted to receive light from the lasers at the wavelength of the lasers and to convert the light from the lasers into optical pulse trains at those wavelengths; (iii) a plurality of optical modulators, each modulator being adapted to receive an optical pulse train at at least one wavelength and modulate the optical pulse train in response to an electromagnetic signal; (iv) an optically dispersive element adapted to receive the optical pulse trains from the modulators and to introduce a wavelength dependent delay between the optical pulse trains; and (v) a photodetector for receiving the modulated dispersed optical pulse trains and producing an analogue electrical signal in response to the optical pulse trains.