Paper
1 August 2002 Contrast ratio enhancement in a saturable absorber-based photonic analog-to-digital converter
Michael J. Hayduk, Rebecca Jane Bussjager, Steven T. Johns, Cheryl M. Gerhardstein, Gary W. Wicks
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Abstract
Optical processing techniques are expected to play a key role in the next generation of advanced high-speed analog- to-digital converters (ADCs). These techniques will alleviate the current limitations inherent in conventional electronic ADCs. We are currently developing a novel photonic ADC module that incorporates the use of semiconductor saturable absorbers to perform the data quantization at speeds in the tens of GHz regime. Results will be presented for the experimental material characterization of the semiconductor saturable absorbers used in the data conversion process. Enhancement of the contrast ratio of the saturable absorber between the 'on' state and the 'off' state can also be greatly enhanced by the use of an asymmetric Fabry-Perot etalon. Initial experimental results for a saturable absorber contained within an etalon will also be presented.
© (2002) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Michael J. Hayduk, Rebecca Jane Bussjager, Steven T. Johns, Cheryl M. Gerhardstein, and Gary W. Wicks "Contrast ratio enhancement in a saturable absorber-based photonic analog-to-digital converter", Proc. SPIE 4732, Photonic and Quantum Technologies for Aerospace Applications IV, (1 August 2002); https://doi.org/10.1117/12.477436
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KEYWORDS
Fabry–Perot interferometers

Reflectivity

Semiconductors

Transmittance

Analog electronics

Mirrors

Indium gallium arsenide

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