High-linearity 208-MS/s photonic analog-to-digital converter using 1-to-4 optical time-division demultiplexers

Author

Twichell, Jonathan C. ; Wasserman, Jeffrey L. ; Juodawlkis, Paul W. ; Betts, Gary E. ; Williamson, Richard C.

Author_Institution

Lincoln Lab., MIT, Lexington, MA, USA

Volume

13

Issue

7

fYear

2001

fDate

7/1/2001 12:00:00 AM

Firstpage

714

Lastpage

716

Abstract

This letter describes a demonstration of a photonic analog-to-digital converter operating at 208 MS/s and utilizing phase-encoded optical sampling to achieve an 87-dB two-tone third-order intermodulation-free dynamic range. A pair of LiNbO/sub 3/ 1-to-4 optical time-division demultiplexers with >35-dB channel extinction distribute the 30-ps sampling pulses to an array of photonic integrate-and-reset circuits followed by 12-b 52-MS/s electronic quantizers. Interleaving spurs due to temporal crosstalk currently limit the overall spur-free dynamic range to 65 dB.

Keywords

analogue-digital conversion; demultiplexing equipment; electro-optical modulation; integrated optics; interleaved codes; optical crosstalk; phase coding; time division multiplexing; 1-to-4 optical time-division demultiplexers; LiNbO/sub 3/; LiNbO/sub 3/ 1-to-4 optical time-division demultiplexers; channel extinction; electronic quantizers; high-linearity; overall spur-free dynamic range; phase-encoded optical sampling; photonic analog-to-digital converter; photonic integrate-and-reset circuits; ps sampling pulses; temporal crosstalk; two-tone third-order intermodulation-free dynamic range; Analog-digital conversion; High speed optical techniques; Optical arrays; Optical crosstalk; Optical distortion; Optical interferometry; Optical pulses; Optical receivers; Optical saturation; Sampling methods;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.930424

Filename

930424