Terabit-Per-Second Optical Super-Channel Receiver Models for Partial Demultiplexing of an OFDM Spectrum

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Terabit-per-second (Tb/s) transmission capacity for the next generation of long-haul communication networks can be achieved using multicarrier optical super-channel technology. In an elastic orthogonal frequency division multiplexing (OFDM) super-channel transmission system, demultiplexing a portion of an entire spectrum in the form of a subband with minimum power is critically required. A major obstacle to achieving this goal is the analog-to-digital converter (ADC), which is power-hungry and extremely expensive. Without a proper ADC that can work with low power, it is unrealistic to design a 100G coherent receiver suitable for a commercially deployable optical network. Discrete Fourier transform (DFT) is often seen as a primary technique for understanding partial demultiplexing, which can be attained either optically or electronically. If fairly comparable performance can be achieved with an all-optical DFT circuit, then a solution independent of data rate and modulation format can be obtained. In this paper, we investigate two distinct OFDM super-channel receiver models, based on electronic and all-optical DFT-technologies, for partial carrier demultiplexing in a multi-Tb/s transmission system. The performance comparison of the receivers is discussed in terms of bit-error-rate (BER) performance.
Publisher
OPTICAL SOC KOREA
Issue Date
2015-08
Language
English
Article Type
Article
Keywords

DISCRETE FOURIER-TRANSFORM; TRANSMISSION; SYSTEMS

Citation

JOURNAL OF THE OPTICAL SOCIETY OF KOREA, v.19, no.4, pp.334 - 339

ISSN
1226-4776
DOI
10.3807/JOSK.2015.19.4.334
URI
http://hdl.handle.net/10203/203947
Appears in Collection
EE-Journal Papers(저널논문)
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