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Looking forward, various advanced modulation formats are considered in order to serve high data rates, compared to conventional intensity modulation/direct detection (IM/DD) [1] in rack-to-rack interconnects for PetaFlop systems, where active optical cables incorporating vertical-cavity surface-emitting (VCSELs), and multimode fibers (MMFs) are used [2]. Towards this direction, optical orthogonal...
The usability of carrierless amplitude and phase (CAP) modulation dimensions for service and user allocation for WDM optical access is experimentally demonstrated in a 2X2D-ODMA configuration.
We propose a novel low-cost and colorless WDM-PON architecture by using all VCSELs-based optical injection locking technique. A bidirectional transmission system over 26 km SMF at 5 Gbps without optical amplification is successfully achieved.
We experimentally demonstrate an ultradense WDM system with sub-channel spacing at the baud rate, achieving 4.0 b/s/Hz spectral efficiency and aggregate capacity of 1.2 Tb/s data transmission over 80-km SMF, for long reach access networking.
We demonstrate directly-modulated VCSELs supporting 2×2 MIMO-OFDM 5.6-GHz radio over fiber signaling over 20-km WDM-PON. Error-free signal demodulation of 64-subcarrier 4-QAM signals modulated at 198.5-Mb/s is achieved after fiber and 2-m indoor wireless transmission.
By combining differential 8-ary phase shift keying with polarization multiplexing, we present transmission of multilevel modulation with 6 bits per symbol through a 100 km fiber span with a receiver bit-error-ratio better than 10-9.
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