Abstract
The operations achievable by means of an incoherent optical data processing system are limited to superimposition integrals involving real nonnegative impulse responses and real non-negative input data.1 The class of achievable operations can be broadened further if the results of two nonnegative operations can be subtracted. Here a demonstration of an architecture, realized by a fiber-optic system operated in the incoherent regime, capable of manipulating real non-negative quantities and complex-valued data is presented. The complex number multiplier (architecture shown in Fig. 1) is based on 2’s complement number representation in conjunction with digital multiplication by an analog convolution algorithm.2
© 1988 Optical Society of America
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