Linear optical sampling technique for simultaneously characterizing WDM signals with a single receiving channel | Zendy

Shuai Wang | Zendy; Bingxin Xu | Zendy; Xinyu Fan | Zendy; Zuyuan He | Zendy

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Linear optical sampling technique for simultaneously characterizing WDM signals with a single receiving channel

Author(s) -

Shuai Wang,

Bingxin Xu,

Xinyu Fan,

Zuyuan He

Publication year - 2018

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.26.002089

Subject(s) - wavelength division multiplexing , channel (broadcasting) , computer science , bandwidth (computing) , channel spacing , transmission (telecommunications) , multiplexing , sampling (signal processing) , optics , gigabit , optical communication , electronic engineering , wavelength , telecommunications , physics , engineering , detector

Wavelength-division multiplexing (WDM) schemes have greatly increased optical transmission capacity, especially when using massively parallel optical frequency combs (OFCs) as carriers. In this paper, we show that linear optical sampling (LOS) is a kind of multiheterodyne process and it can be performed with arbitrary-shaped periodic waveforms. Meanwhile, it can be used for characterizing WDM signals with only a single receiving channel. We successfully demonstrate an observation of 40 WDM channels with 1 THz total bandwidth and total 800 Gbit/s data rate by only using one sampling channel. We show that the adoption of the concept of multiheterodyne detection can improve the performance of LOS technique, and can also greatly simplify multi-channel WDM monitoring systems.

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