Building up low-complexity spectrally-efficient Terabit superchannels by receiver-side duobinary shaping
Artikel i vetenskaplig tidskrift, 2012

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.


Coherent communications

Fiber optics communications


Jianqiang Li

Chalmers, Mikroteknologi och nanovetenskap, Fotonik

Martin E Sjödin

Chalmers, Mikroteknologi och nanovetenskap, Fotonik

Magnus Karlsson

Chalmers, Mikroteknologi och nanovetenskap, Fotonik

Peter Andrekson

Chalmers, Mikroteknologi och nanovetenskap, Fotonik

Optics Express

1094-4087 (ISSN) 10944087 (eISSN)

Vol. 20 9 10271-10282


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