NDLI: Spectrally Efficient WDM Nyquist Pulse-Shaped 16-QAM Subcarrier Modulation Transmission With Direct Detection

Content Provider	IEEE Xplore Digital Library
Author	Erkilinc, M.S. Zhe Li Pachnicke, S. Griesser, H. Thomsen, B.C. Bayvel, P. Killey, R.I.
Copyright Year	1983
Abstract	The ability to transmit signals with high information spectral density (ISD) using low-complexity and cost-effective transceivers is essential for short- and medium-haul optical communication systems. Consequently, spectrally efficient direct detection transceiver-based solutions are attractive for such applications. In this paper, we experimentally demonstrate the wavelength-division multiplexed (WDM) transmission of 7×12 GHz-spaced dispersion pre-compensated Nyquist pulse-shaped 16-QAM subcarrier modulated channels operating at a net bit rate of 24 Gb/s per channel, and achieving a net optical ISD of 2.0 b/s/Hz. The direct detection receiver used in our experiment consisted of a single-ended photodiode and a single analog-to-digital converter. The carrier-to-signal power ratio at different values of optical signal-to-noise ratio was optimized to maximize the receiver sensitivity performance. The transmission experiments were carried out using a recirculating fiber loop with uncompensated standard single-mode fiber and EDFA-only amplification. The maximum achieved transmission distances for single channel and WDM signals were 727 and 323 km below the bit-error ratio of 3.8 × 10^-3, respectively. To the best of our knowledge, this is the highest achieved ISD for WDM transmission in direct detection links over such distances.
Sponsorship	IEEE Lasers and Electro-Optics Society Optical Society of America
Starting Page	3147
Ending Page	3155
Page Count	9
File Size	1367155
File Format	PDF
ISSN	07338724
Volume Number	33
Issue Number	15
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-08-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical receivers Optical transmitters Optical modulation Amplitude modulation Optical attenuators Wavelength division multiplexing Optical fiber communication digital signal processing wavelength division multiplexing information spectral density direct detection transceiver design subcarrier modulation Nyquist pulse shaping single sideband signaling Digital signal processing optical fiber communication
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics

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