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Proceedings Paper

High-Speed Electro-Optic Analog-To-Digital (A/D) Converter
Author(s): F. J. Leonberger; C. E. Woodward; D. L. Spears
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Paper Abstract

A detailed analysis of a high-speed electrooptic guided wave analog-to-digital (A/D) converter has been performed. It is concluded that the development of converters in the 4-6 bit 1-2 GS/sec range should be feasible. Analyses are presented which detail the design considerations for the electrooptic modulator chip, the laser sampler, and the analog signal amplifier. A design plan is presented for a 6-bit 1-GS/sec converter which utilizes an array of 6 LiTaO3 interferometric waveguide modulators to perform the conversion and a frequency-doubled mode-locked Nd:YAG laser to perform the sampling of analog signals having 500 MHz bandwidths. Preliminary waveguide device results are also reported, including the successful demonstration of an interferometric modulator with a 17-dB (98%) extinction ratio.

Paper Details

Date Published: 26 July 1979
PDF: 8 pages
Proc. SPIE 0176, Guided Wave Optical Systems and Devices II, (26 July 1979); doi: 10.1117/12.957215
Show Author Affiliations
F. J. Leonberger, Massachusetts Institute of Technology (United States)
C. E. Woodward, Massachusetts Institute of Technology (United States)
D. L. Spears, Massachusetts Institute of Technology (United States)


Published in SPIE Proceedings Vol. 0176:
Guided Wave Optical Systems and Devices II
Elsa M. Garmire, Editor(s)

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