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Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
Published on: March 20, 2017
Building up low-complexity spectrally-efficient Terabit superchannels by receiver-side duobinary shaping
Jianqiang Li1, Martin Sjödin, Magnus Karlsson
1Photonics Laboratory, Department of Microtechnology and Nanoscience, Chalmers University of Technology, Gothenburg SE-412 96, Sweden. jqjqlee@gmail.com
Optics Express
|April 27, 2012
Summary
A new receiver-side duobinary-shaped wavelength-division multiplexing (RS-DBS-WDM) approach enables spectrally efficient superchannels beyond 100G. This method offers high bandwidth and spectral efficiency with comparable implementation costs.
Area of Science:
- Optical communications
- Signal processing
Background:
- Increasing demand for higher data rates beyond 100G necessitates spectrally efficient multi-carrier superchannels.
- Orthogonal frequency-division multiplexing (OFDM) and Nyquist wavelength-division multiplexing (WDM) are established methods for superchannel construction.
Purpose of the Study:
- To propose and experimentally demonstrate a novel, low-complexity WDM approach for building spectrally efficient multi-carrier superchannels.
- To evaluate the performance and characteristics of the proposed RS-DBS-WDM approach.
Main Methods:
- Development of a receiver-side duobinary shaping (RS-DBS) technique for WDM.
- Experimental generation and transmission of a 1.232-Tbit/s 11-carrier superchannel using the RS-DBS-WDM approach.
- Qualitative comparison of RS-DBS-WDM with OFDM and Nyquist-WDM regarding implementation complexity.
Main Results:
- Successful demonstration of a 1.232-Tbit/s 11-carrier superchannel using RS-DBS-WDM.
- The generated superchannel signal fits within the passband of 300-GHz reconfigurable optical add and drop multiplexers (ROADMs).
- RS-DBS-WDM exhibits high transceiver analog-bandwidth efficiency and spectral efficiency.
Conclusions:
- The proposed RS-DBS-WDM is a viable low-complexity approach for spectrally efficient superchannels.
- RS-DBS-WDM is compatible with conventional WDM technologies and coherent detection.
- The approach offers comparable implementation penalties to existing methods while providing significant spectral advantages.
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