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Delta‐sigma modulation is a powerful technique for optical signal processing due to its high bandwidth, noise immunity, and low cost. In this article, a theory for all‐optical delta‐sigma modulation is presented along with the calculation and design parameters for optical system implementation. An optical delta‐sigma modulator can be used in a microwave photonic link to encode the radio frequency...
A reflective microring resonator is used as a wavelength selective nonlinear feedback element in a fiber ring laser to generate optical clock pulses. All components are driven by DC current.
The next generation of optical communication will depend heavily on all optical signal processing. Because digital clock pulses are needed for driving functional gates and synchronizing optical analog to digital (A/D) converters and other optical components, great effort has been placed on generating optical pulses. Approaches include non-linear polarization rotation, photonic crystal based methods,...
Optical square-wave clock generation based on all optical bistable switching system is demonstrated experimentally and theoretically. All active components are driven by DC current and the duty cycle and the oscillation frequency are controllable.
Delta Sigma modulation is the most powerful technique for optical signal processing due to its high bandwidth, noise immunity and cost. In this paper an optical delta sigma modulation theory is presented along with the calculation and design issues for optical system implementation. Simulation results are also attached which confirm the theory and possibility of reaching THz frequency in chip level...
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