40-Gbit/s ETDM Channel Technologies for Optical Transport Network

Miyamoto, Yutaka; Kataoka, Takahiro; Tomizawa, M.; Yamane, Y.

doi:10.1006/ofte.2001.0359

Cited by 15 publications

(9 citation statements)

References 24 publications

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“…Time division multiplexing (TDM) is the most commonly used technique for such purpose. For example, 40 Gbit/s data stream can be achieved by multiplexing four 10 Gbit/s data using electrical TDM (ETDM) [9,10]. Using such system, 3.2 Tbit/s (80 × 40 Gbit/s) WDM/ETDM transmission is experimentally reported [11].…”

Section: Introductionmentioning

confidence: 97%

40 Gbit/s on-off-keyed system with 5.71 GHz clock recovery circuit using duty cycle division multiplexing

et al. 2009

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Principle of 7 × 5.71 Gbit/s on-off-keyed (OOK) over duty cycle division multiplexing (DCDM) technique is presented. The 40 Gbit/s DCDM signals are then recovered with a receiver operates at 5.71 GHz clock using seven sampling circuits. With seven-user DCDM we show that spectral width of return-to-zero signal can be reduced around 42.8 %. The 40 Gbit/s OOK using DCDM required an optical signal-to-noise ratio of around 31.6 dB and tolerate around 50 ps/nm of chromatic dispersion. In addition, performance of the system is compared against other multiplexing techniques and modulation formats.

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Section: Introductionmentioning

confidence: 97%

40 Gbit/s on-off-keyed system with 5.71 GHz clock recovery circuit using duty cycle division multiplexing

et al. 2009

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“…The cost that the RZ coding technique pays for this transition is the increase in bandwidth. For example, conventional amplitude-shift-keying (ASK) RZ has a null-to-null optical modulation bandwidth of 160 GHz at 40 Gb/s [21]. Carrier suppression RZ (CS-RZ) reduced the modulation bandwidth requirement of RZ, in which, at the same bit rate, it has null-to-null modulation bandwidth of 120 GHz [21].…”

Section: Introductionmentioning

confidence: 99%

“…For example, conventional amplitude-shift-keying (ASK) RZ has a null-to-null optical modulation bandwidth of 160 GHz at 40 Gb/s [21]. Carrier suppression RZ (CS-RZ) reduced the modulation bandwidth requirement of RZ, in which, at the same bit rate, it has null-to-null modulation bandwidth of 120 GHz [21]. Both the techniques required a receiver operating at 40 GHz to recover the clock and perform the sampling [21].…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2009

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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.

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“…The next-generation 400-Gb/s system will be developed by using two-subcarrier 32-Gbaud PDM 16-ary QAM (16QAM) and will be put into practical use in the near future [4]. Attention is already moving to 1-Tb/s/channel-class technologies [5]. A higher symbol rate is now attracting attention for 1-Tb/s systems.…”

Section: Introductionmentioning

confidence: 99%

High-performance compound-semiconductor integrated circuits for advanced digital coherent optical communications systems

Nagatani

Nosaka

2016

IEICE Electron. Express

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Communications traffic over photonic networks is exponentially increasing due to the spread of broadband applications. To cope with the rapid growth, novel 100-Gb/s digital coherent systems have been deployed recently in optical core networks. Further research and development of digital coherent technologies with channel rates of beyond 100 Gb/s is now being conducted. Optical transceivers for such high-speed communications systems need high-performance analog and mixed-signal electronic circuits such as optical modulator drivers, transimpedance amplifiers (TIAs), analog-to-digital converters (ADCs), and digital-to-analog converters (DACs). Compound-semiconductor integrated circuits (ICs) have played key roles in this technical field. This paper reviews recent trends in compound-semiconductor ICs for such advanced digital coherent optical communications systems and presents our latest results based on InP heterojunction bipolar transistor (HBT) technology.

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40-Gbit/s ETDM Channel Technologies for Optical Transport Network

Cited by 15 publications

References 24 publications

40 Gbit/s on-off-keyed system with 5.71 GHz clock recovery circuit using duty cycle division multiplexing

40 Gbit/s on-off-keyed system with 5.71 GHz clock recovery circuit using duty cycle division multiplexing

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

High-performance compound-semiconductor integrated circuits for advanced digital coherent optical communications systems

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