NSF CCF CAREER: Enabling Technologies for Beyond 1 Tb/s per Wavelength Optical Transport

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Project Goals

This multidisciplinary research grant studies different approaches to overcome the limitations of heterogeneous optical networks and enable serial 1 Tb/s optical transport, while employing the components operating at lower speeds. In this approach, modulation, coding and multiplexing are performed in a unified fashion so that, effectively, the transmission, signal processing, detection and decoding are done at much lower symbol rates. At these lower rates, dealing with nonlinear and linear effects is manageable while the aggregate data rate is maintained at 1 Tb/s and above. The primary research objectives of this grant can be summarized as follows:

i)    Development of different coded modulation schemes, employing both single-carrier and multicarrier, to enable beyond 1 Tb/s per wavelength optical transport and for simultaneous mitigation of channel impairments over various types of optical links. Different scenarios for enabling beyond 1 Tb/s optical transport have been studied: (a) single-carrier multilevel multidimensional coded modulation, (b) multiband coded OFDM, (c) four-dimensional OFDM, (c) multicarrier multidimensional coded-modulation and (d) multi-mode fiber (MMF)/multicore fiber optical transport.

ii)   Hardware FPGA/ASIC implementation of coded modulation schemes.

iii)  Validation of the proposed methodology through proof-of-concept implementation studies. 

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Last updated: May 22, 2011.

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