Mehrdad Raisi

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Opto-VLSI processors offer promising technological platform for implementing reconfigurable Wavelength Division Multiplexing (WDM) networks. By driving an Opto-VLSI processor with a computer generated hologram (CGH), dynamic optical beam steering and/or multicasting can be achieved. In this paper we develop and compare CGH algorithms based on simulated(More)
An efficient wavelength division multiplexed (WDM) channel equalizer employing a dynamic MicroPhotonic processor is demonstrated. Using a proof-of-principle 6-channel equalizer setup, optimum phase holograms have been generated, which realise WDM equalisation with more than 25 dB dynamic range and less than 0.2 dB power ripples.
In this paper, we propose the integration of Opto-VLSI systems and photonic components to realise a reconfigurable MicroPhotonic add/drop multiplexer (RMPADM) that can scale to tens of Wavelength Division Multiplexed (WDM) channels while maintaining low insertion loss and low crosstalk. We demonstrate the proof-of-principle of a 2-WDM-channel RMPADM(More)
We propose a novel multiband tunable optical filter structure based on an Opto-VLSI processor. Tunability for each band is achieved by controlling the size and shape of holographic diffractive grating generated on the Opto-VLSI processor. Results for an experimental 3-passband tunable filter are presented indicating over 25 dB of dynamic range and passband(More)
MicroPhotonic broadband RF signal processors utilize true-time-delay methods to perform processing functions that cannot be achieved by conventional electronic methods. In addition to their small physical size and immunity to EMI, Photonic signal processors offer the possibility of delaying broadband RF signals with almost no loss. In this paper, we present(More)
In this paper, a novel integrated optical beam router for microphotonic switching is presented. The router uses a piecewise linear optic that steers and couples optical collimated beams to optical fibre ports with minimum loss and excellent tolerance to fluctuations in design parameters. Experimental results show that for a 1/spl times/2 MicroPhotonic(More)
A novel architecture for a microphotonic beamformer that generates variable RF true-time delays to steer broadband nulls for smart antennas, is presented. The beamformer employs a Vertical Cavity Surface Emitting Laser (VCSEL) array, photoreceiver array, and micro-optics integrated on an optical substrate through which many delayed versions of the RF are(More)
In this paper, we discuss the use of MicroPhotonic processors to control the optical power distribution in photonic signal processing structures, achieving adaptive photonic RF filtering with arbitrary transfer functions. A new MicroPhotonics-based photonic signal processing architecture is presented, in which fibre collimator arrays, Opto-VLSl processors,(More)
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