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Building up low-complexity spectrally-efficient Terabit superchannels by receiver-side duobinary shaping

Jianqiang Li (Institutionen för mikroteknologi och nanovetenskap, Fotonik) ; Martin Sjödin (Institutionen för mikroteknologi och nanovetenskap, Fotonik) ; Magnus Karlsson (Institutionen för mikroteknologi och nanovetenskap, Fotonik) ; Peter Andrekson (Institutionen för mikroteknologi och nanovetenskap, Fotonik)
Optics Express (1094-4087). Vol. 20 (2012), 9, p. 10271-10282.
[Artikel, refereegranskad vetenskaplig]

Recently, an increasing interest has been put on spectrally-efficient multi-carrier superchannels for beyond 100G. Apart from orthogonal frequency-division multiplexing (OFDM) and Nyquist wavelength-division multiplexing (WDM), another low-complexity WDM approach based on transmitter-side pre-filtering and receiver-side duobinary shaping is proposed to build up multi-carrier superchannels. This approach is referred to as receiver-side duobinary-shaped WDM (RS-DBS-WDM). Generation and transmission of a 1.232-Tbit/s 11-carrier superchannel is experimentally demonstrated. The superchannel signal can be well fit inside the passband of multiple 300-GHz reconfigurable optical add and drop multiplexers (ROADMs). In the superchannel scenario, the proposed RS-DBS-WDM is qualitatively compared with OFDM and Nyquist-WDM in terms of implementation complexity. In sum, the proposed RS-DBS-WDM approach features high transceiver analog-bandwidth efficiency, high spectral-efficiency, the absence of specific spectral manipulation, compatibility with conventional WDM technologies and coherent detection algorithms, and comparable implementation penalty.

Nyckelord: Coherent communications, Fiber optics communications, Multiplexing



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Denna post skapades 2012-04-21. Senast ändrad 2014-09-02.
CPL Pubid: 156957

 

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