Spectral Efficiency Improvement in Photonic Time-Stretch Analog-to-Digital Converter via Polarization Multiplexing

Author

Fard, Ali ; Buckley, Brandon ; Jalali, Bahram

Author_Institution

Dept. of Electr. Eng., Univ. of California Los Angeles, Los Angeles, CA, USA

Volume

23

Issue

14

fYear

2011

fDate

7/15/2011 12:00:00 AM

Firstpage

947

Lastpage

949

Abstract

Dual-polarization photonic time-stretch technique, which exploits polarization multiplexing to improve the spectral efficiency of the conventional photonic time-stretch technique, is proposed. This technique reduces the demand on optical bandwidth for large record length of the photonic time-stretch analog-to-digital converter. It is shown that this technique can capture high-bandwidth radio-frequency signals (>;10-GHz instantaneous bandwidth). Experimentally, 12.5-Gb/s data eye-diagram measurement using this preprocessor operating in equivalent-time mode is demonstrated.

Keywords

analogue-digital conversion; light polarisation; multiplexing; optical communication equipment; data eye-diagram measurement; dual-polarization photonic time-stretch technique; equivalent-time mode; high-bandwidth radio-frequency signals; optical bandwidth; photonic time-stretch analog-to-digital converter; polarization multiplexing; spectral efficiency; Bandwidth; Dispersion; Optical distortion; Optical fibers; Optical polarization; Optical pulses; Analog-to-digital converter (ADC); eye diagram; oscilloscope; photonic time-stretch; polarization multiplexing;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2011.2142414

Filename

5750079