Title :
Optical quantization of microwave signals via distributed phase Modulation
Author_Institution :
Naval Res. Lab., Washington, DC, USA
Abstract :
Optical phase modulators and a continuous-wave laser diode were used to quantize microwave signals with frequencies up to 25 GHz. A 2- and 3-b optical quantizer and photonic analog-to-digital converter are demonstrated. The quantizer system is primarily limited in the optical domain by the speed of the phase modulators. Converting the optical binary data into the electrical domain limits the data acquisition to the electronic readout circuitry.
Keywords :
microwave photonics; optical modulation; phase modulation; quantisation (signal); readout electronics; data acquisition; distributed phase modulation; electronic readout circuitry; microwave signal optical quantization; optical binary data; optical phase modulators; photonic analog-to-digital converter; Circuits; High speed optical techniques; Laser mode locking; Optical filters; Optical interferometry; Optical modulation; Optical signal processing; Phase modulation; Quantization; Sampling methods; Analog-to-digital (A/D) conversion; optical signal processing; photonic sampling;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2004.838864
