Optical precoding technologies with high-speed DAC at 40G or beyond

A precoding technology with a digital signal processor and high-speed DACs is a promising key enabler for realizing next-generation higher-order modulation systems. Achievement of a DAC operating speed of 40 GS/s or beyond is a prerequisite for high-speed precoded transmission. In this paper, the ap...

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Bibliographic Details
Main Author: Sugihara, T
Format: Conference Proceeding
Language:English
Subjects:
Abstracts
BiCMOS integrated circuits
Clocks
Decoding
Digital
Digital Signal Processing
Digital-to-Analog Converter
High speed
Microprocessors
Modulation
Multiplexing
Optical communication
Optical Communications
Optical switches
Signal processing
Trends
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Summary:A precoding technology with a digital signal processor and high-speed DACs is a promising key enabler for realizing next-generation higher-order modulation systems. Achievement of a DAC operating speed of 40 GS/s or beyond is a prerequisite for high-speed precoded transmission. In this paper, the application of and the trends in optical precoding technology are reviewed. A high-speed DAC for optical communications at 40 Gb/s and beyond is introduced. To achieve a DAC suitable for digital signal processor based high order modulation, an interleaved DAC and a high-speed multiplexer are key technologies.
ISSN:2162-108X
0277-786X
2162-1098
DOI:10.1117/12.900443