70-Gb/s amplitude-shift-keyed system with 10-GHz clock recovery circuit using duty cycle division multiplexing

Abstract

The performance of ASK over DCDM for up to seven channels is reported. The aggregate bit rate of 70 Gb/s is achieved with only 160-GHz modulation bandwidth. The clock and data recovery are realized at 10-GHz clock rate, which is very economic and efficient. At 7 × 10 Gb/s, the worst receiver sensitivity of −10 dBm, OSNR of 41.5 dB and chromatic dispersion tolerance of ±17 ps/nm are achieved. Whereas, for the best channel, the receiver sensitivity, OSNR, and chromatic dispersion tolerance are −23.5 dBm, 29 dB, and ±36 ps/nm, respectively.

Recent progress in optical devices for mode division multiplex transmission system

“…Thus, reducing the differential gain [57]. In addition, using SLM was also proposed as a technique to equalise the differential gain by adjusting the pump modes' power [58]. Varying the powers of the separate amplified modal signals was achieved by placing an SLM immediately after the amplifier to equalise the differential gain.…”

Research of 100Gbit/s DP-QPSK Based on DSP in WDM-PON System

“…With the boom of high definition digital television, online real-time streaming media, network games, interactive communications, and wireless mobile access, network traffic surges year by year, making the backbone network and metropolitan area network capacity requirements increase simultaneously. The capacity of future backbone would be required to reach Tbit/s, and the rate of single wavelength reach 100 Gbit/s [1][2][3][4].…”