Traveling Wave Spatial Quantized Analog-to-digital Conversion

Author

Jarrahi, Mona ; Fabian, R. ; Pease, W. ; Lee, Tong H.

Author_Institution

Stanford Univ., Stanford

fYear

2007

fDate

3-8 June 2007

Firstpage

225

Lastpage

228

Abstract

An analog-to-digital converter (ADC) architecture that extracts the required quantization energy directly from the input analog signal and sampling clock through a spatial quantization scheme is presented. We experimentally demonstrate 8-level quantization consuming only 7.2 pJ per quantization operation with 18 GHz bandwidth. Measured 8 ps full-width half-maximum photodetector output voltages, promises the potential of realizing a 3 bit 125 GS/s ADC through this system.

Keywords

photodetectors; quantisation (signal); signal sampling; 8-level quantization; ADC architecture; bandwidth 18 GHz; full-width half-maximum photodetector; input analog signal; mode-locked laser; quantization energy; sampling clock; spatial quantized analog-to-digital converter; time 8 ps; traveling waves; word length 3 bit; Analog-digital conversion; Circuits; Laser mode locking; Optical interferometry; Optical pulses; Optical sensors; Optical waveguides; Quantization; Sampling methods; Ultrafast optics; Analog-to-digital converter; DNL; INL; SNDR; mode-locked laser; quantum-confined Stark effect;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium, 2007. IEEE/MTT-S International

Conference_Location

Honolulu, HI

ISSN

0149-645X

Print_ISBN

1-4244-0688-9

Electronic_ISBN

0149-645X

Type

conf

DOI

10.1109/MWSYM.2007.380368

Filename

4263785