Time-Interleaved 20-GHz Modulated Wideband Converter Based on Random Optical Sampling

Time-Interleaved 20-GHz Modulated Wideband Converter Based on Random Optical Sampling

In this letter, time-interleaved multiwavelength pseudorandom binary sequence (PRBS) optical pulses are utilized to significantly increase the instantaneous bandwidth of the modulated wideband converter (MWC). A four-channel MWC with a bandwidth of 20 GHz is proposed for the first time, where four-w...

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Veröffentlicht in:IEEE photonics technology letters 2015-05, Vol.27 (9), p.1022-1025
Hauptverfasser: Guo, Qiang, Liang, Yunhua, Chen, Minghua, Chen, Hongwei, Yang, Sigang, Xie, Shizhong
Format: Artikel
Sprache:eng
Schlagworte:
Compressive sampling
Delay effects
modulated wideband converter
Optical pulses
Photonics
Radio frequency
Sensors
time-interleaved pulses
Wideband
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container_end_page 1025
container_issue 9
container_start_page 1022
container_title IEEE photonics technology letters
container_volume 27
creator Guo, Qiang
Liang, Yunhua
Chen, Minghua
Chen, Hongwei
Yang, Sigang
Xie, Shizhong
description In this letter, time-interleaved multiwavelength pseudorandom binary sequence (PRBS) optical pulses are utilized to significantly increase the instantaneous bandwidth of the modulated wideband converter (MWC). A four-channel MWC with a bandwidth of 20 GHz is proposed for the first time, where four-wavelength optical pulse trains modulated by a 10.16-Gb/s PRBS signal are interleaved temporally after going through four sections of fibers with different lengths in parallel. The flat and ultrawide spectrum of the PRBS-modulated pulse train guarantees a uniform SNR and recovery probability. Sparse radio frequency signals ranging from 0.5 to 20 GHz are reconstructed faithfully from four-channel samples with only 360-MHz bandwidth.
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subjects Compressive sampling
Delay effects
modulated wideband converter
Optical pulses
Photonics
Radio frequency
Sensors
time-interleaved pulses
Wideband
title Time-Interleaved 20-GHz Modulated Wideband Converter Based on Random Optical Sampling
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