224-Gb/s Carrier-recovery-free Doubly Differential 2ASK-8PSK for Short-reach Optical Networks


We propose and experimentally demonstrate a carrier-recovery-free 224-Gb/s dual-polarization doubly differential (DD) two-amplitude/eight-phase shift keyed (2ASK- 8PSK) signal for 100-km fiber transmission with coherent detection. An 11-tap multi-symbol DD (MSDD) decoding scheme helps reduce the penalty caused by two differential operations in conventional DD decoding, allowing an optical signal-to-noiseratio (OSNR) improvement of 3.7 dB for DD QPSK and 4.3 dB for DD 16QAM. By employing such decoding, a frequency offset (FO) tolerance of 16 GHz has been achieved in a DD 2ASK-8PSK system for a BER of ~1×10-3. Compared with a 224-Gb/s 16QAM system employing conventional carrier recovery algorithms, the proposed system is more robust to FOs, and the FO tolerance range is only limited by the effective receiver bandwidth.

Publication DOI: https://doi.org/10.1109/LPT.2018.2856401
Dataset DOI: https://doi.org/10.17036/researchdata.aston.ac.uk.00000335
Divisions: College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
College of Engineering & Physical Sciences
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Publication ISSN: 1941-0174
Last Modified: 29 May 2024 07:15
Date Deposited: 20 Jul 2018 10:47
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Related URLs: https://ieeexpl ... cument/8411428/ (Publisher URL)
PURE Output Type: Article
Published Date: 2018-08-15
Published Online Date: 2018-07-16
Accepted Date: 2018-07-01
Authors: Zhang, T. (ORCID Profile 0000-0002-3901-6267)
Sanchez, C. (ORCID Profile 0000-0003-3004-2773)
Al-khateeb, M. (ORCID Profile 0000-0002-1367-6777)
Ali, A.
Tan, M. (ORCID Profile 0000-0002-0822-8160)
Skvortcov, P.
Phillips, I. (ORCID Profile 0000-0002-2776-8939)
Sygletos, S. (ORCID Profile 0000-0003-2063-8733)
Ellis, A. (ORCID Profile 0000-0002-0417-0547)



Version: Accepted Version

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