This paper presents a WDM architecture of a photonic analogue to digital converter (ADC) for direct RF sampling in Radar and EW Digital Receiver, the architecture is based on the parallel operation of an array of state-of-the-art electronic ADCs while the photonic sampling is achieved using a Mode Locked Laser (MLL). The paralelisation is implemented through a novel technique for the slicing of the optical spectrum and the time interleaving of the colored pulses. A high dynamic range by bandwidth product of the ADC can be obtained. The MLL overcomes the jitter limitation in conventional electronic quartz references in electronic ADCs and can be also fiber optic distributed as reference clock for the Radar Tx and Rx functions. The test realized on the prototype is reported demonstrating a 5 Gbps sampling rate ADC. ©2008 IEEE.

A photonic ADC for radar and EW applications based on modelocked laser

POTI', LUCA
2008-01-01

Abstract

This paper presents a WDM architecture of a photonic analogue to digital converter (ADC) for direct RF sampling in Radar and EW Digital Receiver, the architecture is based on the parallel operation of an array of state-of-the-art electronic ADCs while the photonic sampling is achieved using a Mode Locked Laser (MLL). The paralelisation is implemented through a novel technique for the slicing of the optical spectrum and the time interleaving of the colored pulses. A high dynamic range by bandwidth product of the ADC can be obtained. The MLL overcomes the jitter limitation in conventional electronic quartz references in electronic ADCs and can be also fiber optic distributed as reference clock for the Radar Tx and Rx functions. The test realized on the prototype is reported demonstrating a 5 Gbps sampling rate ADC. ©2008 IEEE.
2008
9781424421695
Direct RF sampling
ENOB
Mode locked laser
Photonic ADC
Sampling jitter
SNR
Electrical and Electronic Engineering
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.12606/579
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